JPH0229961A - Dat - Google Patents

Abstract

PURPOSE:To automatically search a last part even on loading at a non-recording part and to make consecutive recording easy by providing a recording existance discriminating circuit to discriminate the existance of a recorded signal and a means to search the last part of the recorded part of a magnetic recording tape. CONSTITUTION:When a fixed recording signal is obtained by the output of a recording/reproducing amplifier 106 and a signal processing part 105, a recording existance discriminating circuit 1 outputs a RFOK signal 2 to a microcomputer 100 with making it an H level. When the signal is the H level when a tape becomes a reproducing condition, the tape which is in contact with a head is a recorded part, a present position is displayed at a display 109, and it becomes a stopping condition. Besides, when the signal 2 is an L level, the tape is a non-recorded part, rewinding is executed, the last part of the recorded part is searched, and it becomes the stopping condition. Thus, even on loading a cassette at the non-recorded part, the last part of the recorded part is searched automatically, and tie-recording is made easy.

Description

[Detailed description of the invention] (b) Industrial application field This invention relates to DAT.

(b) Prior Art/Problems to be Solved by the Invention Conventionally, DATs such as those shown in FIGS. 42 to 50 have been provided as DATs.

FIG. 42 is a block diagram of the main parts of the DAT.

In the figure, 100 is a microcomputer controlling the DAT, 10 is a mechanism part of the DAT, +02 is an input terminal for inputting audio signals, and 103 is for guiding audio signals to an external device (not shown). output terminal, 104
1 is a D/A converter for converting the analog signal at the input terminal 102 into a digital signal during recording, and a D/A converter for converting the digital signal into an analog signal during playback.
A converter section consisting of an A/D converter for guiding an analog signal to 03, +06 performs predetermined signal processing on the output of the converter section 104 during recording, converts it into a recordable format, and converts the signal picked up by the head during playback. is subjected to predetermined processing and this signal is sent to the converter section 10.
Signal processing unit to lead to 4.

106 is a recording/playback amplifier that amplifies the output signal of the signal processing section 105 and applies it to the head during recording, and amplifies the signal picked up by the head and guides it to the signal processing section 105 during playback; +07 is the rotating drum of the mechanism section +01. A servo circuit 108 gives instructions to the microcomputer 100, which controls the mechanism unit +01 based on the drum FG signal 101b of l01a, the output signal 106b of the recording/playback amplifier 106, the output signal of the signal processing unit 105, and the output signal of the microcomputer 100. key, 10
9 is a display for displaying the output signal of the microcomputer 100, and the microcomputer! 00 is configured to control a signal processing section 105, a recording/reproducing amplifier +06, a servo circuit +07, and a display 109.

1. In the DAT configured as described above, FIG. 44 is a flowchart of the program of the microcomputer to(l).

In FIG. 44, step 5100O is means for determining the presence or absence of a recording signal on the magnetic recording tape.

In FIG. 44, when the cassette is set in the DAT, the presence or absence of recording on the magnetic recording tape is detected in step S1000, and if the part of the tape that is in contact with the head is the recording part, the current state of the tape is detected. Position indicator+
09 (step SIO old), if it is a non-recorded part, display +09 indicates that it is a non-recorded part (step 31002), and since the required signal is not recorded in the non-recorded part, A T'F Since the operation cannot be performed, the ATF is turned off, and the muting circuit (not shown) is activated to eliminate abnormal noise from the external device (
(not shown).

To perform splice recording with 1) AT configured as above, check the current position on the display +09, and then use the ff key, reW key, play key, etc. to select the end of the recorded part. If you are not skilled in the operation, you will have to manually search for the unrecorded part N as shown in Figure 43.
R occurs on the tape T, and if such a tape T is played back, a shock noise may occur during playback, or the start I
There was a drawback that D (S-ID) could not be searched.

2. In a DAT with a renumbering function, the conventional method is to forcibly interrupt the renumbering operation.

I was using the STOP key. In DAT, STO
Since the P key is an important key, it is formed larger than normal function keys. For this reason, it is possible to press the button by mistake, and in this case, there is a drawback that the number must be renumbered from the beginning.

Also, if you want to turn off the DAT after renumbering,
Conventionally, there was an operational drawback in that the power had to be turned off after waiting for the renumbering operation to be completed.

3. S-ID can be written and erased, and 5-ID
When erasing a 5-ID on a DAT that allows a search for 5-ID, conventionally the player presses a key to search for 5-ID, confirms the position of 5-ID on the tape, and then enters the play state. Then, press the delete key to delete the 5-ID while the 5-ID is standing, or press the delete key for the 5-ID to search for the previous and most recent 5-ID and delete this one. 5-A DAT was provided in which the ID was erased. However, the former method has drawbacks such as the user having to press the erase key during just 9 seconds while the 5-ID is standing, and the latter method accidentally erasing an unwanted 5-ID.

4. In DAT, 5-ID as shown in Figure 45
is recorded for 9 seconds from the beginning of the song, and furthermore, 5-ID
5-ID cannot be written for 9 seconds after the 5-ID falls.

However, in the conventional DAT, the 5-ID was left open for 9 seconds, but the interval at which the 5-ID cannot be written is left to the user, and the predetermined interval of 9 seconds is set accurately. No special measures were taken to maintain this.

Then, as shown in Figure 45, if you try to overwrite a new 5-ID as S-ID2 on the part 5-ID where 5-ID is written, it is impossible to overwrite it in the exact same position. As a result, a portion of the S-ID originally written remains, resulting in a new 5-ID lasting longer than the prescribed 9 seconds.

Furthermore, in the conventional type, if the STOP key is pressed during the 9 seconds during which the 5-ID is being written, or during the 9 seconds immediately after that, the 5-ID is stopped, so an incomplete 5-ID of less than 9 seconds is easily formed. However, there was a drawback that the search could not be performed accurately.

5. In the conventional DAT, in order to erase the skip-ID recorded on the magnetic recording tape, the following operation is performed, for example.

First, search operation using skip-ID (skip-I
When D is found, a predetermined switch is turned off so that the next 5-ID search operation is not performed. Next, search for skip-ID in the PLAY state, and
e to search for ID and delete skip-ID at the same time
Press the rase key.

However, since the recording time of the skip-ID is 1 second, it is difficult to find the skip-ID in the PLAY state, and furthermore, it is quite difficult to find the exact location of the skip-ID and press the erase key at the same time. It had the drawback of requiring skill in operation.

5. In conventional DATs, for example, even if 5-ID is written at the position on the magnetic recording tape at which recording is to be started, a DAT is provided in which 5-ID is forcibly written at the recording start position. was.

However, in the above case, the 5
There was a drawback that a long S-[D of more than 9 seconds was formed to write a new SiD on the -ID.

7. Conventional DATs are designed to accept program operations (playback operations that play back in the PNO order specified by the user in advance) even if a magnetic recording tape on which an SiD with no PNO is written is set. It was provided.

However, when trying to perform a program operation using the above-mentioned magnetic recording tape, there is a drawback that the program operation cannot be performed as desired.

8. With conventional DAT, when recording, bla
nk 5Press the search key to search for the unrecorded part,
After that, press the rec key to enter the pause state, and then press the rec key.
I pressed the key to start recording. However, a blank tape on which nothing is recorded has a further disadvantage in that a 100 mm unrecorded section from the rear end of the leader tape must be removed and then recorded, making the recording operation complicated.

9. As a DAT with a so-called relative search function that searches for and plays a song 10 songs ahead of the currently playing song, for example, the IJP key and DO key, which specify the direction of the search, are used.
A DAT that has a WN key and, in the above case, presses the UP key 10 times to search for the next song.
Numeric keys are provided, and in the above case, the PN currently being played.
A DAT was provided that allowed users to search for a desired song by inputting O plus 10 using the number keys.

However, in the above-mentioned conventional devices, the former requires pressing the UP or DOWN key many times depending on the number of songs to be searched, and the latter requires that tapes with no PNO written on them are sold. The drawback was that it was not possible to search for the desired song.

10. In the conventional DAT, time was measured using reel pulses obtained by the rotation of the reel, so there was a drawback that accuracy was lacking when measuring recording/playback time.

11.Ab is a conventional DAT that can be recorded continuously.
DA that maintains solute-time continuity
T was provided.

However, since the continuity of PNOs was not taken into consideration, there was a drawback that the last recorded PNO had to be checked each time recording was performed.

For example, a DAT configured as shown in the flowchart of FIG. 46 has been provided as a writable DAT for 12.S-ID.

Next, the procedure for writing the 5-ID will be explained based on FIG. 46.

When the S-ID write key (not shown) is pressed to write the 5-ID (step 5IOIO), step S102 [1 and step 5
Based on I030, if pIaI or rec is in progress, the WTIME address (
(hereinafter referred to as WTIME) indicates 0:00:18 O.
o:o:18:0” (step 5I040)
1゜Subsequently, program-Lime (hereinafter referred to as
PTIME) and the currently loaded PTIME
The value of WTIMH read earlier is subtracted from the value of (step 51050), and if the result of this calculation, WTIME, is negative (step 5I06G), that is, the head position is 18 seconds from the rise of 5-ID on the tape. If it is within the range, reception of the 5-ID write key is disabled.

Also, if the calculation result WTIME is O or positive, the head position is 1 from the rising edge of 5-ID on the tape.
Since the time is 8 seconds or more, write the 5-ID according to the instructions of the S-IDwrite key.

However, the above-mentioned conventional system has the disadvantage that the program capacity is large, which takes up space in a narrow memory area.

13. For example, a DAT configured as shown in the flowchart shown in FIG. 47 has been provided as a DAT equipped with an intro scan function that sequentially searches for songs while playing for a predetermined time from the beginning of the song.

In FIG. 47, when the intro scan key (not shown) for operating the intro scan function is pressed, the rewind state is entered (step s108o).

Then, when the tape end (BOT) is reached (step 510901), a search for a song begins as a fast forward state (step S1100).

When the rising edge of 5-ID recorded on the tape is detected based on step 5I100 and step 51120 (step 51120), since it is in the fast forward state, it is rewinded by performing a review operation (step 51130). When the falling edge of -ID is detected, the falling edge of 5-ID is the beginning of the song (step SI+40), so at this point the playback operation is switched (
Step S1150) S1150) Playback for a predetermined time (Step SI+60). After playing for a predetermined period of time, the music is put into fast forward mode again and an intro scan is performed while repeating steps 5I100) and SI+60 described above. Then, when the tape end (EOT) is reached in step S1110, the intro scan is stopped (step 51170), and the tape is rewound (step 51180).

However, in the conventional system, an intro scan routine for performing an intro scan as described above is provided, which has the disadvantage of occupying a narrow memory area.

+4. Conventionally, as a DAT that makes it possible to search for a target position on a tape, there has been provided, for example, a DAT that is provided with a counter and searches for a location on the tape that corresponds to the value of this counter.

However, in the conventional system described above, there is no strict correlation between the counter value and the position on the tape, and furthermore, when the counter value reaches a predetermined value, it is determined that the search is complete and the search operation ends. There was a drawback that it was not possible to search for an accurate position on the tape.

15. Conventionally, the DAT that detects the 5-ID and makes it possible to locate the beginning of a song or search for a song is, for example, the 48th DAT.
As shown in the figure, the review operation is rewound, and when the falling edge Sa of 5-ID is detected, the review operation is stopped, and at the point Pr where the tape has completely stopped, the running direction is reversed and the tape is run at the playback speed. A DAT has been provided in which the muting state is canceled and the search is terminated upon detection of the rising edge Sa of 5-ID.

However, the timing at which 5-ID is written is as follows:
There is also a device that records 5-ID when the input level of the signal SR to be recorded exceeds a predetermined level, and when trying to reproduce the signal SR with 5-ID recorded in this way using the above-mentioned DAT. Then, there was a drawback that the signal SR recorded before 5-ID could not be reproduced and the beginning of the signal would be cut off.

+6. A DAT that allows you to directly select a song on a magnetic recording tape where a program number is recorded by specifying the program number, for example, can stop the song selection operation if the program number you want to search for is not recorded. A DAT was provided.

However, in the above-mentioned conventional system, there is a possibility that the music selection operation may stop, so the user has to monitor the music selection operation until the music selection is completed.

17. Conventionally, as shown in FIG. 49(A), in a magnetic recording tape in which the first song M U + and the second song M [J U
If you try to record the third song M U s following the first song MU instead of 2 songs M U s
, or if you try to eliminate the rest of the second song as described above, the first song M will be deleted as shown in Figure 49 (C).
I had to write the third song MU5 slightly overlapping the last part M1□ of U+.

In particular, when recording as shown in FIG. 49(c), there is a drawback that if the above-described writing is repeated several times, the recorded portion of the first song M IJ + becomes shorter each time the recording is continued.

18. Traditionally, DAT tape end detection is as follows:
For example, as shown in FIG.
Two reel FG sensors 1I3a and 113b are provided,
A DAT has been provided that controls the mechanism section +01 based on these sensors.

However, in the above-mentioned conventional device, when measuring the rotational torque of a reel, etc. with a torque cassette (not shown) without a tape attached, the reel does not rotate, resulting in 5 tops, and the torque cannot be measured. The problem was that there was no.

For this reason, some devices are available in which it takes a certain amount of time to reach the 5 top so that the torque can be measured, but even in this case, there is a drawback that tension is applied to the tape for a certain period of time at the tape end.

The present invention was developed in view of the above-mentioned problems, and its purpose is to eliminate all of the above-mentioned drawbacks and to provide a DAT with good operability.

(c) Means for solving the problem In order to achieve the above object, the present invention is constructed as follows.

1. In a DAT having a recording/playback amplifier and a signal processing section, a recording presence/absence determination circuit for identifying the presence or absence of a recording signal based on the output signals of the recording/playback amplifier and the signal processing section; A search means for searching for the last part of the recorded portion of the magnetic recording tape is provided.

2. A recording presence/absence determination circuit for determining the presence or absence of a recording signal, a search means for searching for the last part of the recorded portion of the magnetic recording tape, and a timer are provided, and the timer is continuously operated for a predetermined period of time set in advance during both lifespans. If the playback signal cannot be detected,
The search means is configured to search the last part of the recorded portion.

3. The search means for searching for the last part of the recorded portion of the magnetic recording tape is composed of a review operation setting means and a playback operation setting means, and is configured to perform a playback operation after executing the review operation based on the output signal of the recording presence/absence determination circuit. It is composed of

4. In a DAT having a recording/playback amplifier and a signal processing section, a recording presence/absence determination circuit for identifying the presence or absence of a recording signal based on the output signals of the recording/playback amplifier and the signal processing section, and an output signal of the signal processing section. a reproduction signal check circuit for determining the error rate of the reproduction signal based on the error rate of the reproduction signal, a timer, a search means for searching for the last part of the recorded portion of the magnetic recording tape, and a timer; If any of the output signals of the reproduced signal check circuit is not at a predetermined level for a period of time preset in the timer, the search means searches the last part of the recorded portion.

5. DAT with recording/playback amplifier and signal processing section
a recording/presence determination circuit for identifying the presence or absence of a recording signal based on the output signals of the recording/playback amplifier and the signal processing section; and a reproduction signal for determining the error rate of the reproduction signal based on the output signal of the signal processing section. A check circuit, a timer, and a search means consisting of a review operation setting means and a reproduction operation setting means are provided, and either the output signal of the recording presence/absence determination circuit or the output signal of the reproduction signal check circuit is set in the timer in advance. If the level is not at a predetermined level for a continuous period of time, the review operation is performed and then the playback operation is performed.

6. In a DAT having a recording/playback amplifier and a signal processing section, a recording presence/absence determination circuit is provided for identifying the presence or absence of a recording signal based on the output signals of the recording/playback amplifier and the signal processing section, and The magnetic recording tape is configured to perform a rewinding operation when the discrimination circuit detects a non-recorded area on the magnetic recording tape.

7. Renumber operation identification means for identifying whether a renumber operation is in progress in a DAT capable of renumber operation;
A renumbering stop key for forcibly interrupting the renumbering operation is provided, and the renumbering stop key is configured to accept only the renumbering stop key based on the identification result of the renumbering operation identifying means during the renumbering operation. .

8. In a DAT whose renumber function is controlled by a microcomputer, a first power supply circuit that enables the microcomputer to operate at all times, and a second power supply circuit that operates other circuits other than the microcomputer. and power switch on/off identification means for identifying that the power switch of this DAT has been pressed during renumbering operation, and when the power switch is pressed during renumbering operation, the power switch is activated based on the power switch on/off identification means. This configuration is configured to turn off the power supply circuit of the number-completed apprentice 2.

9. S-ID signal can be written and erased, and 5.
- A DAT that makes it possible to search for an ID signal is provided with a preparation key for writing or erasing the 5-ID signal, and preparation key-on state detection means for detecting that the preparation key is pressed; When the key-on state detection means detects that the preparation key has been pressed, a search operation is performed, and after the search is completed, a pause operation is performed.

10.9-In a DAT that allows writing and erasing of ID, a timer is provided to measure the time to write 5-ID, and based on this timer, 5-ID is written for 9 seconds and 5-ID is erased for 9 seconds immediately after that. It is configured as follows.

11. In the S-ID writable DAT, 5-
A timer for measuring the writing time of the ID and a 5-ID recording operation identifying means for identifying whether or not the 5-ID is being recorded when the STOP key is pressed are provided. 5-ID recording operation identification means is 5-I
When it is detected that D is being recorded, it is not immediately stopped, but the 5-ID is written for a predetermined 9 seconds based on the time measured by the timer, and then it is stopped.

12. S-ID can be written in AT,
5-Timer to measure ID writing time and STO
5-ID recording operation identification means for identifying whether or not 5-ID is being recorded when the P key is pressed is provided, and STOP
When the key is pressed, the S-■D recording operation identification means is set to 5.
-When it detects that the ID is being recorded, it does not stop immediately, but writes the 5-ID for a predetermined 9 seconds based on the time measured by the timer, and then stops it and when the STOP key is pressed, It is configured so that the input signal is muted to create a silent recording state.

13. In S-ID writable DAT, 5-
A timer that measures the ID writing time and the 9 seconds immediately after that, and a 5-I that identifies whether it has been within 18 seconds since 5-ID recording started when the STOP key was pressed.
D recording operation identification means is provided, and when the 5-ID recording operation identification means detects that 5-ID recording has started within 18 seconds when the STOP key is pressed, the system does not immediately stop recording. 5-ID is written for a predetermined 9 seconds based on the time measured by the timer, the 5-ID is erased for 9 seconds following the 5-ID, and then stopped.

14. In the S-ID writable DAT, 5-
A timer that measures the ID writing time and the 9 seconds immediately after that, and a 5-ID that identifies whether it has been within 18 seconds since 5-ID recording started when the STOP key was pressed.
A recording operation identification means is provided, and when the 5-ID recording operation identification means detects that 5-ID recording has started within 18 seconds when the STOP key is pressed, the system does not stop immediately. , 5-ID is written for a predetermined 9 seconds based on the time measured by the timer, 5-ID is erased for 9 seconds following this 5-ID, and then stopped and input is disabled after the STOP key is pressed. The configuration is such that the signal is muted to create a silent recording state.

15. In a DAT capable of queue operation, review operation, and writing and erasing of skip-ID, the above-mentioned skip
- A preparation key for instructing an ID writing operation and an erasing operation, and preparation key-on state detection means for detecting that the preparation key is pressed, and the preparation key-on state detection means detects when the preparation key is pressed. This configuration is configured so that when a skip-ID is detected during a cue operation or a review operation after detecting a problem, a pause operation is performed.

16. In a DAT in which S-ID, PNO, and program time can be written, a 5-ID detection means is provided to detect the presence or absence of 5-ID on tape L when the pause state changes to the recording state. 5-ID detection means is 5
-When ID is detected, the program at the time of recording start
Next, program t and ime are written, and the recorded PNO is written in the subcode, and the 9-second 5-ID is completed, and
When the 5-ID detection means does not detect 5-ID, p
Write programtime from 0 and write the previous PN
The configuration is such that a PNO incremented by O is written and a 5-ID for 9 seconds is completed.

17. In a programmable DAT.

A PNO presence/absence detection means for detecting the presence or absence of a PNO is provided, and this PNO presence/absence detection means detects when no PNO is written.
- The configuration is such that the program cannot operate when the ID is detected.

18. On a DAT capable of fast forwarding, there is a key that instructs to search for unrecorded portions of the tape and also instructs to perform predetermined initial settings in the case of a blank tape, and a key-on that detects when this key is pressed. and a state detecting means, and when the fast forward key is pressed after the key-on state detecting means detects that the key is pressed, the end of the recorded portion of the tape is searched based on the detection result of the key-on state detecting means. It is configured as follows.

+9. A DAT having a search function for searching recorded songs is provided with two search keys for instructing the search direction and a numeric key, and the song to be searched can be specified using the two search keys and the numeric key. It is composed of

20. In a DAT equipped with a display for displaying Absolute-time, a reset key for resetting the display contents of the display, and reset key detection means for detecting that the reset key is pressed; storage means for storing Δabsolute-time at that time when the reset key detection means detects that the reset key has been pressed; and Absolute-time and Absolute-time stored in the storage means.
A calculating means for determining the difference from me is provided, and the calculation result by the calculating means is displayed on the display.

21. In a DAT capable of rewinding, a key for instructing a search for a non-recorded portion of the tape and, in the case of a blank tape, for instructing to perform predetermined initial settings;
A key-on state detecting means for detecting each time this key is pressed and a tape end detecting means are provided, and after the key-on state detecting means detects that the key is pressed, the tape end detecting means detects the tape end. The apparatus is configured to perform initial recording settings for the DAT tape based on the detection result of the tape end detection means.

22. In a DAT capable of rewinding, a key for instructing a search for a non-recorded portion of the tape and, in the case of a blank tape, for instructing to perform predetermined initial settings;
and key-on state detection means for detecting that the key has been pressed, and when the key-on state detection means detects that the key has been pressed, the end of the recorded portion of the tape is detected based on the detection result of the key-on state detection means. It is configured to search for the section.

23. A means for searching for the last PNO in the recorded portion is provided, and a value obtained by incrementing the value of this PNO is written as the next PNO.

24. In a DAT that can write and read S-ID and Program-time, the read P
The configuration is such that 5-4D writing can be performed only when the value of program-time is equal to a predetermined value.

25. In a DAT equipped with an intro scan function that sequentially searches songs while playing for a predetermined time from the beginning of the song, an intro scan identification means is provided to identify whether or not the intro scan function is in operation, and this intro scan function is provided. The apparatus is configured to perform an intro scan based on the identification result of the scan identification means.

In the displayable DAT of 26° Abso I ute-time, the search target Absol ut
e-time and currently displayed Abso 1ute
-time is provided, and a tape speed corresponding to the calculation result of this calculation means is set, and the target Absolute-t on the tape is set while changing the tape speed according to the calculation result.
It is configured to search for ime.

27. In a DAT that detects the S-ID and enables song cueing or song searching, a predetermined period of time from the falling edge of 5-ID during review operation for song cueing or searching. It is configured so that it later enters the playback operation state.

28. In a DAT that allows you to directly select a song on a magnetic recording tape where a program number is recorded by specifying the program number, if the program number you want to search is not recorded, and at the time of song selection. If the program number is larger than the program number you want to select, select a song with a program number that is larger than the program number you specified and that is closest to the program number you specified, and if the program number you want to search for is not recorded. In this case, if the program number at the time of song selection is smaller than the program number you want to select, the program selects a song with a program number smaller than the program number you instructed to select, and whose program number is closest to the program number you instructed to select. It is composed of

29. A DAT for recording a desired signal such as a music signal on a magnetic recording tape is configured to record a silence state for a predetermined period of time on the magnetic recording tape, and then record the desired signal.

30. A DAT in which the tape end is detected by a reel FG sensor and a tape end sensor is provided with a switch for temporarily stopping the reel rotation detection function.

31. In the S-ID writable DAT, 5-
A timer for measuring the writing time of the ID and a 5-ID recording operation identifying means for identifying whether or not the 5-ID is being recorded when the STOP key is pressed are provided. 5-ID recording operation identification means is 5-I
When it is detected that D is being recorded, it does not stop immediately and starts recording a predetermined 9 times based on the time measured by the timer.
Write 5-ID for seconds, then stop and S
After the TOP key is pressed, the display is configured so that it can be displayed on the display so that it can be identified that the STOP key has been pressed.

3Z, S-11) writable DAT, 5
- A timer that measures the ID writing time and the 9 seconds immediately after that, and a timer that measures the 5-I when the S1' OP key is pressed.
5-ID recording operation identification means for identifying whether or not it has been within 18 seconds since the start of recording of D, and when the STOP key is pressed, the 5-ID recording operation identification means identifies
When it is detected that it has been less than 18 seconds since the start of recording of D, do not immediately stop the recording, but write 5-ID for a predetermined 9 seconds based on the time measured by the timer, and write 5-ID following this 5-ID. 5-ID erase operation is performed for seconds,
After that, after stopping and pressing the STOP key,
It is configured so that it can be displayed on a display so that it can be identified that the s''rop key has been pressed.

33. After the STOP key is pressed, characters are displayed on the PNO display portion of the display so that it can be identified that the STOP key has been pressed.

(d) Effect According to this invention, the following effects are achieved.

1. A recording presence/absence discrimination circuit for determining the presence or absence of a recording signal and a search means for searching for the end of the recorded portion of the magnetic recording tape are provided, so even if the portion of the tape in contact with the head is a non-recorded portion, For example, the search means searches for the last part of the recorded portion based on the output signal of the recording presence/absence determination circuit.

Therefore, even if a cassette is loaded with a non-recorded portion, the end of the recorded portion is automatically searched, making continuous recording easy. Furthermore, it is possible to prevent a situation in which the recorded portion is divided into several parts.

2. A recording presence/absence discrimination circuit for determining the presence or absence of a recording signal, a search means for searching for the last part of the recorded portion of the magnetic recording tape, and a timer are provided, so that during playback, the timer continues for a preset period of time. If the reproduced signal cannot be detected, the search means searches the last part of the recorded portion.

Therefore, even if a cassette is loaded with a non-recorded portion, the end of the recorded portion is automatically searched, making continuous recording easy.

3. Since the search means for searching for the last part of the recorded portion of the magnetic recording tape is composed of the review operation setting means and the playback operation setting means, the RFOK signal, which is the output of the recording presence/absence determination circuit, is at "L" level during the playback operation. When this happens, the review operation is executed and the tape is rewound. Then, the RFOK signal is “H”.
“When the level is reached, the playback operation continues for a predetermined period of time and then stops.

4. A recording presence/absence determination circuit for determining the presence or absence of a recording signal, a reproduction signal check circuit for determining the error rate of the reproduction signal based on the output signal of the signal processing section, and a timer;
Since a search means for searching for the last part of the recorded portion of the magnetic recording tape is provided, either the output signal of the recording presence/absence determination circuit or the output signal of the reproduction signal check circuit continues for a period of time preset in the timer. When the level is not at a predetermined level, the search means searches the last part of the recorded portion.

5. A recording presence/absence determination circuit for determining the presence or absence of a recording signal, a reproduction signal check circuit for determining the error rate of the reproduction signal based on the output signal of the signal processing section, and a timer;
Since the search means consisting of the review operation setting means and the reproduction operation setting means is provided, either the output signal of the recording presence/absence determination circuit or the output signal of the reproduction signal check circuit continues for a period of time preset in the timer. When the level is not at the predetermined level, the review operation is performed, and then the playback operation is performed and stopped.

6. In a DAT having a recording/playback amplifier and a signal processing section, a recording presence/absence determination circuit is provided to identify the presence or absence of a recording signal based on the output signals of the recording/playback amplifier and signal processing section. When the recording presence/absence determination circuit detects a non-recording area on the magnetic recording tape, a rewinding operation is performed.

Therefore, for example, even if a cassette is loaded with a non-recorded portion, it will be rewound to the end of the recorded portion, making splicing recording easier.

7. Renumber operation identification means for identifying whether a renumber operation is in progress in a DAT capable of renumber operation;
Since a renumbering stop key for forcibly interrupting the renumbering operation is provided, only the renumbering stopping key is accepted during the renumbering operation based on the identification result of the renumbering operation identifying means. Therefore, there is no possibility of erroneously canceling the renumbering operation.

8. In a DAT whose renumber function is controlled by a microcomputer, a first power supply circuit that enables the microcomputer to operate at all times, and a second power supply circuit that operates other circuits other than the microcomputer. and a power switch on/off identification means for identifying that the power switch of this DAT has been pressed during the renumbering operation, so that when the power switch is pressed during the renumbering operation, the power switch on/off identification means detects that the power switch is pressed during the renumbering operation. Based on this, after the renumbering is completed, the second power supply circuit is turned off.

Therefore, if the power switch is pressed during the renumbering operation, the power to this DAT will be automatically turned off after the renumbering is completed.

9. S-ID signal can be written and erased, and 5.
- In the DAT that made it possible to search for an ID, 5-ID
Since a preparation key for writing or erasing a signal and a preparation key-on state detection means for detecting that the preparation key is pressed are provided, when the preparation key is pressed, a search is performed based on the preparation key-on state detection means. After the search is completed, the robot performs a pause motion.

Therefore, the 5-ID can be easily erased by pressing the erase key afterwards.

10. Since a timer was provided to measure the time to write the S-ID, the 5-ID is written for 9 seconds based on this timer, and the SiD is erased for 9 seconds immediately after that.

Therefore, even if a new 5-ID is written in the area where the 5-ID was recorded, the recording time of the 5-ID will always be 9 seconds, and a predetermined time is also secured in the interval with the next 5-ID. be able to.

11. In the S-ID writable DAT, 5-
Since we have provided a timer that measures the writing time of the ID and a 5-ID recording operation identification means that identifies whether or not 5-ID is being recorded when the STOP key is pressed, STO
When the 5-ID recording operation identification means detects that 5-ID is being recorded when the P key is pressed, the 5-ID recording operation is not stopped immediately, but is continued for a predetermined 9 seconds based on the time measured by the timer. Write the ID and then stop.

Therefore, even if the STOP key is pressed during writing of the 5-ID, the 5-ID of a predetermined length is formed without stopping.

12. After the STOP key is pressed, the input signal is muted and becomes silent recording mode, so even if the STOP key is pressed while writing the 5-ID, it will not stop and will continue to record for a predetermined length. 5-ID is formed.

Further, since the silent recording state occurs at the same time as the STOP key is pressed, unnecessary audio signals are not recorded during recording of the 5-ID of a predetermined length.

13. In the S-ID writable DAT, the SI
A timer that measures the writing time of D and the 9 seconds immediately after that, and a 5-ID that identifies whether it is within 18 seconds after starting recording of 5-ID when the STOP key is pressed.
Since a recording operation identification means is provided, when the STOP key is pressed and the 5-ID recording operation identification means detects that 5-ID recording has started within 18 seconds, the system is immediately stopped. Write the 5-ID for a predetermined 9 seconds based on the time measured by the timer, and write the 5-ID.
For the next 9 seconds, the 5-ID erasing operation is performed and then stopped.

Therefore, even if you press the STOP key during or 9 seconds immediately after writing the 5-ID, the 5-r of the predetermined length will not stop.
D is formed, and furthermore, the interval with 5-ID is also a predetermined 9
More than seconds.

14. After the STOP key is pressed, the input signal is muted and recorded in a silent recording state, so STO is executed during 5-ID writing or for 9 seconds immediately after.
Even when the P key is pressed, the process does not stop, and a 5-ID of a predetermined length is formed, and furthermore, the interval between the next 5-ID and the next 5-ID is longer than the predetermined 9 seconds.

Furthermore, since a silent recording state occurs at the same time as the STOP key is pressed, unnecessary audio signals are not recorded during the recording of the predetermined length of 5-ID or during the 9 seconds immediately thereafter.

15. A preparation key for instructing a Skip-ID writing operation and an erasing operation, and preparation key-on state detection means for detecting that the preparation key is pressed are provided, and the preparation key-on state detection means detects when the preparation key is pressed. Skip- during cue operation or review operation after detecting a press
Since the configuration is such that a pause operation occurs when an ID is detected, the skip-ID can be easily erased by pressing the erase key for erasing the skip-ID in this pause state.

16. A 5-ID detection means is provided to detect the presence or absence of 5-ID on the tape when the pause state changes to the recording state, and when the 5-ID detection means detects the 5-ID, the program time at the time of starting recording is provided. followed by progra
PNO recorded along with writing m time
Continue writing in the subcode to complete 9 seconds of 5-ID. Further, when the 5-ID detection means does not detect a 5-ID, it writes program time from O and writes a PNo that is incremented from the previous PNO, and further completes the 5-ID for 9 seconds.

Therefore, regardless of the presence or absence of the 5-ID at the recording start position on the magnetic recording tape, the correct format 5-ID is placed at the recording start position.
- ID is recorded.

+7. A PNO presence/absence detection means for detecting the presence or absence of a PNo is provided, and when the PNO presence/absence detection means detects 5-ID in which no PNO is written, no program operation is performed.

Therefore, in the program operation, there is no possibility that the program operation is not performed as desired.

18. On a DAT capable of fast forwarding, there is a key that instructs to search for unrecorded portions of the tape and also instructs to perform predetermined initial settings in the case of a blank tape, and a key-on that detects when this key is pressed. If the fast forward key is pressed after the key-on state detection means detects that the key has been pressed, the end of the recorded portion of the tape is searched.

Therefore, when recording, press the above key after setting the cassette, and then press the ff key. If the cassette is a blank tape, the necessary initial settings will be made, or if the tape is currently being recorded, the unrecorded area will be Search for and enter a pause state.

19. Two search keys and a number key are provided to indicate the direction of the search, so if you want to perform a relative search (for example, searching for 10 songs before the currently playing song), you can use the search keys and number keys as desired. You can instruct the user to search for the desired song.

Therefore, search instructions have become easier.

20. A reset key for resetting the display contents of the display, a reset key detection means for detecting that the reset key has been pressed, and when the reset key detection means detects that the reset key has been pressed. Abso
A storage means for storing the lute-time, and an Abso
l ute-time and Ab stored in the storage means.
Since a calculation means for calculating the difference from the solute-time is provided and the calculation result by this calculation means is displayed on the display, it is possible to accurately display the elapsed time of recording and reproduction.

21. A key for instructing a search for a non-recorded portion of the tape and for instructing to perform predetermined initial settings in the case of a blank tape, a key-on state detection means for detecting that this key is pressed, and a tape end detection means. and detection means,
After the key-on state detection means detects that the key is pressed, when the tape end detection means detects the tape end, the DAT tape recording initial setting is performed based on the detection result of the tape end detection means. Abso
Predetermined initial settings are made not only for the lute-time but also for the PNO. Therefore, the recording operation has become easier.

22. Provided with a key for instructing a search for a non-recorded portion of the tape and for instructing to perform predetermined initial settings in the case of a blank tape, and a key-on state detection means for detecting that this key has been pressed. Therefore, when this key-on state detection means detects that the key has been pressed, it searches the last part of the recorded portion of the tape.

23. A search means is provided for the last PNO of the recorded part, and the value obtained by incrementing this PNO value is written as the next PNO.
Continuous predetermined values are recorded not only in I ute-time but also in PNO.

24. In a DAT that can write and read S-ID and Program-time, the read P
Since the 5-ID can be written only when the value of program-time is equal to a predetermined value, the configuration is simple and does not occupy a narrow memory area.

25. In a DAT equipped with an intro scan function that sequentially searches songs while playing for a predetermined time from the beginning of the song, an intro scan identification means is provided to identify whether or not the intro scan function is in operation, and this intro scan function is provided. Since the intro scan is performed based on the identification result of the scan identification means, there is no need to provide a dedicated routine for performing the intro scan. Therefore, the narrow memory area is not compressed.

26. Provide a calculation means for finding the difference between the search target Absolute-time and the currently displayed Absolute-time, set the tape speed corresponding to the calculation result of this calculation means, and set the tape speed according to the calculation result. Since the target absolute time on the tape is searched while changing the speed, the position on the tape can be searched accurately and quickly.

27. In a DAT that detects the S-ID and enables the beginning of a song or a song search, it is determined in advance from the falling edge of 5-ID during the review operation for song beginning-2 or search. After a certain period of time, it enters the playback mode. Therefore, since the reproduction state is ensured at a position before the rising edge of 5-ID and the E edge, there is no chance that the reproduced signal will be cut off at the beginning! stomach.

28. When a program number is recorded on a magnetic recording tape and the desired program number is not recorded, it is possible to directly select a song by specifying the program number. If the program number at the time of song selection is larger than the program number you want to select, the program number is larger than the program number you requested and the song selection instruction 1. Change the song with the program number closest to the program number you selected. In addition, if the program number you are looking for is not recorded and the program number at the time of song selection is smaller than the program number you want to select, the program number that is smaller than the program number you have instructed to select, and the program number you have instructed to select. Select the song with the program number closest to the program number.

Therefore, even if the corresponding program number does not exist, the song with the program number closest to the designated program number is selected, improving operability.

29. Since we record silently on the magnetic recording tape for a predetermined period of time and then record the desired signal, you can continue recording even if you repeatedly record the same song multiple times. 1) The recording time of the previous song will not be shortened to +11 of the recording time.

30. When measuring torque, the reel rotation detection function can be temporarily stopped with a switch, so the torque can be measured using the torque cassette without the reel rotating.

Furthermore, during normal use, the tape can be stopped quickly at the tape end.

31. When the STOP key is pressed while recording the S-ID, the display indicates that the STOP key has been pressed.

Therefore, it can be easily confirmed that the STOP key has been accepted.

32. When the STOP key is pressed during S-ID recording or for 9 seconds immediately following 5-10, STOP
The display indicates that the key has been pressed.

Therefore, it can be easily confirmed that the STOP key has been accepted.

33.S""The PNO display part of the display is configured to display text in order to identify when the OP key has been pressed, so the meaning of the display can be easily identified.

(E) Embodiment An embodiment of the present invention will be described with reference to the drawings of FIGS. 1 to 41.

Note that the same parts as in the conventional example are given the same reference numerals, and the explanation thereof will be omitted.

(Embodiment 1) FIG. 1 is a block diagram of the main part, FIG. 2 is a diagram showing the state of splicing, and FIG. 3 is a flowchart.

In the figure, l is a recording presence/absence determination circuit that determines the presence or absence of recording on a magnetic recording tape, and 2 is an RF signal that is the output of this circuit.
This is an OK signal.

The recording presence/absence determination circuit 1 outputs the RFOK signal 2 to the microcomputer +00 as an "H" level if a predetermined recording signal is obtained based on the output signals of the recording/playback amplifier +06 and the signal processing section +05. .

Next, the operation of this embodiment will be explained based on the flowchart of FIG.

When a cassette is set on the tray and the cassette load key of the key 108 is pressed (step S1), the cassette load state is entered and the cassette is loaded at a predetermined position (step S2). The tape is then pulled out of the cassette (
Step S3), and enters a playback state (Step S4). In this state, if the RFOK signal 2, which is the output of the recording/non-recording determination circuit 1, is at the "11" level, the part of the tape that is in contact with the head is the recording part (step S5), so the current information is displayed on the display 109. The position is displayed in step S9), and the state is stopped (step 510), but if the RFOK signal 2 is at the "Yes" level, it is a non-recorded part, so it is assumed to be in a rewinding state, and in step S6), it is rewound to the recorded part. Step S7), then step S8) to search for the last part of the recorded portion, display the current position (step S9), and enter a stopped state (step 510).

As described above, according to this embodiment, the second song can be recorded continuously following the recorded portion of the first song, as shown in FIG.

(Example 2) FIG. 4 is a flowchart showing the second embodiment.

FIG. 4 shows steps S5 to S in FIG.
This is a modification of the processing up to 8.

Next, the operation of the second embodiment will be explained based on FIG. 4.

In the reproduction state (step S4), the microcomputer +00 outputs RFOK, which is the output of the recording/presence determination circuit l.
The level of signal 2 is detected.

If the RFOK signal 2 is at the “■” level, the recorded portion is being reproduced, but when the RFOK signal 2 is at the “L” level, the RF multiplied signal is not detected, so it is determined that it is an unrecorded portion. Activate a switching circuit (not shown) (mute ON) to stop outputting the signal to an external device (not shown), and
The ATF operation is stopped (ATF 0FF), and a key manual hold flag is set to hold the reception of the key 108 (step 512).

Next, the timer is turned on and started (step 513).

In this state, the level of the RFOK signal 2 is checked again (step 516), and if it is "H" level, there is a recording signal, so the mute is turned off, the ATF is turned on, and the key manual hold flag is lowered.Step 5I4 ), the timer is turned off (step 5I5), the normal reproduction state is restored, and the level of the RFOK signal 2 is continuously checked again.

Next, in step S16, if the RFOK signal is at the "L" level and the timer continues to set the RFO for a predetermined time,
If the K signal 2 is at "L" level, it means there is a non-recorded section, so step S rewinds the tape and searches for the last part of the recorded section.
+8), then display the current position (step S9),
Set it to a stopped state.

(Embodiment 3) FIG. 5 is a flowchart showing a third embodiment, and FIG. 6 is a diagram showing the relationship between the recording state of the magnetic recording tape and the search state based on the flowchart of FIG. 5.

Next, the operation of this embodiment will be explained based on FIG.

In FIG. 5, step S23. Step S30 indicates that the reproducing operation setting means puts the DAT into a reproducing state, and step S27 indicates that the review operation setting means puts the DAT into a review operating state in which the capstan is rewound while being crimped.

When the cassette is set in a cassette tray and the cassette load key +08 is pressed to set the cassette in a predetermined position (step 5ZO), the tape is pulled out from the cassette (step 521). When the tape is safely loaded (step 522), the playback operation setting means starts the playback operation (step 523). If the RFOK signal 2, which is the output signal of the recording presence/absence determination circuit l, is at "H" level, the current position is displayed (step 525) and the process is stopped (step 826), but the RFOK signal 2 is "L".
If the head is at the level P on the tape T in FIG. 6, the review operation setting means performs a review operation of rewinding the tape with the capstan crimped (step 527).

Eventually, when the head comes to the recording area R on the tape T, R
Since FOK signal 2 becomes "H" level (step 328
) and stops at position P2 on recording portion R (step 529). Then, the playback operation setting means again sets the playback operation (Step 330), and after a predetermined time, displays on the display 109 that it is the last part of the recorded portion.Step 5
32), the execution moves to a stop routine and is stopped at the last part P of the recorded portion R (step 526).

Also, in the review operation, when the RFOK signal 2 does not go to 'H' level (step 328) and the tape end is detected (step 523), the DAT generally does not operate within 100mm from the rear end of the leader tape. ,
Since recording and playback are not possible, perform the specified initialization including these initial settings (step 5).
34), and then displays that fact and moves to the stop routine to stop (step 526).

(Embodiment 4) FIG. 7 is a block diagram of this embodiment, and FIG. 8 is a flow chart of a microcomputer program of this embodiment.

In FIG. 7, 3 is a reproduced signal check circuit, and 4 is an ADT signal which is an output signal of the reproduced signal check circuit 3. In FIG. The reproduced signal check circuit 3 includes a signal processing section +05
It is determined whether the reproduced signal which is the output of the circuit 3 is equal to or higher than a preset error rate per frame, and if the error rate is lower than the preset error rate, the ADT signal which is the output signal of the reproduced signal check circuit 3 is set to "H" level. This signal is then applied to the microcomputer +00.

Next, the operation of this embodiment will be explained based on the flowchart of FIG.

FIG. 8 shows a modified version of the processing procedure from step S23 onward in FIG.

In FIG. 8, steps S23 and S5B indicate that the reproducing operation setting means puts the DAT into a reproducing state, and step S52 indicates that the review operation setting means enters a review operating state of rewinding the capstan with the capstan crimped. There is.

Also, step S44. The timer at S51 is a timer provided to identify the levels of the RFOK signal 2, which is the output signal of the recording presence/absence determination circuit I, and the ADT signal 4, which is the output signal of the reproduced signal check circuit 3.

Once the cassette is loaded, playback starts (step 5).
23), while displaying the current position (step 540).
, the level of the RFOK signal 2 of the recording presence/absence determination circuit 1 and the level of the ADT signal 4 which is the output of the reproduced signal check circuit 3 are monitored (step 541). If the levels of the RFOK signal 2 and the ADT signal 4 are both "H" level, steps 340 and S41 are repeated;
When at least either the K signal 2 or the ADT signal 4 goes to "L" level, the ATF is turned off, a message indicating "no recording signal" is displayed, the muting circuit is turned on, and the key 108 is turned on. Set the key manual hold flag provided to hold the key input (Step 5)
42).

Next, a timer (2) provided to identify the levels of the RFOK signal 2 and the ADT signal 4 is started (step 543), and it is checked again whether both the RFOK signal 2 and the ADT signal 4 are at the "H" level. (Step 544). If both signals are at "H" level, timer 0 is started (step 545), and the levels of RFOK signal 2 and ADT signal 4 are checked again (step 546).
). If at least one of the RFOK signal 2 and ADT signal 4 reaches the "[," level, it is not normal, so stop timer 〇 (step 547) and check the status of the two signals again according to timer 〇. The ATF is checked, and if it is at the "H" level for a predetermined period of time (approximately 0.1 seconds in this example) until the timer 〇 counts up (step 34B), it is determined that the recording signal is being recorded normally, and the ATF is is turned on, the display of "no recording signal" is turned off, the muting circuit is turned off, and the key manual power suspension flag is lowered to accept input from the key 108 (step 549).

Then, the timer (2) is stopped (step 350), and the above-described loop from step 340 is repeated again.

Continuing in step S44 and step S51, at least one of the RFOK signal 2 or the ADT signal 4 is “
” level and the above state continues for a predetermined period of time (approximately 2 seconds in this embodiment) (step 551).
), the head is located at P on the non-recorded area NR as shown in FIG.
Since it is located at
2). And this time it is a review operation, so RFOK
Only the level state of signal 2 is examined (step 553).

If the RFO signal 2 is at the "L" level, the review operation is performed until it reaches the "11" level. Then, when the RFOK signal 2 reaches the "H" level, the timer 〇 is started (step 554). RFOK signal 2 in status
The RFOK signal 2 is checked and if it is at "L" level, the timer 〇 is stopped (step 856), and the execution from step S53 is repeated again, but the RFOK signal 2 is held for a predetermined time until the timer 〇 counts up (in this embodiment, 0 , S seconds)
If it continues to be at "H" level (step 557), the head is at position P3 on the recording portion R, so this time the review operation is switched to the playback operation (step 858).
. Next, start the timer ■ (step 559)
, after a predetermined time (0, S seconds in this embodiment) has elapsed (step S60), the current position is displayed, and in step S
Step 5 of lowering the key human power hold flag set in step 42
61), and is stopped at the rearmost position P of the recorded portion R (step 562).

(Embodiment 5) FIG. 9 is a block diagram showing the fifth embodiment, and FIG. 10 (A
) and (B) are flowchart diagrams of this embodiment.

FIG. 10(A) is a flowchart showing a key manual routine which is an interrupt routine, and FIG. 10(B) is a renumbering routine for performing a renumbering operation.

In FIG. 9, 5 is a renumber key, 6 is a renumber stop key for stopping the renumber operation,
The renumber key 5 and the renumber stop key 6 are connected to an input port (not shown) of the microcomputer +00.

Next, the operation of this embodiment will be explained based on the flowcharts of FIGS. 10(A) and 10(B).

In FIG. 10, step So+ is a renumbering operation identifying means for identifying a renumbering operation.

Press renumber key 5 to perform renumber operation (
Step 570) and immediately identify whether the renumbering operation is in progress (Step 571).

Since the renumber key 5 has just been pressed, the renumber operation is not in progress, so a key analysis routine for analyzing the pressed key is executed (step 572).

The key pressed now is renumber key 5, so the first
The process moves to the renumber routine shown in FIG. 0 (B).

In the renumbering routine, a flag indicating that the renumbering operation is in progress is set at the CND address of the RAM (not shown) of the microcomputer 100 (step 573).
A renumber operation is performed (step 574). If the renumbering operation is in progress (step 575), it is subsequently checked whether the renumbering stop key 6 is pressed (step 376), and if the renumbering stop key 6 is pressed, the renumbering operation is stopped (step 575). S7?), if the renumber stop key 6 is not pressed, steps S74 and S75. The execution of S76 is repeated, and when all renumbering is completed (step 575), the renumbering operation is completed (step 577).

When the renumbering stop key 6 is pressed during the execution of the routine shown in FIG. ).

Now, in step S73, R of the microcomputer 100 is
Since a flag indicating that the renumbering operation is in progress is set at the AM CND address (step 571), the renumbering stop key 6 is subsequently confirmed (step 378).
), instructs to cancel the renumbering operation (step 5).
79).

Figure 10(A) is an interrupt routine, and Figure 1O(
Since B) is a routine in which each step is executed independently from this interrupt routine, when the renumbering stop instruction in step S79 is confirmed in step 376 (step 376), the renumbering operation is stopped (step 5).
77).

(Embodiment 6) FIG. 11 is a block diagram showing the sixth embodiment, and FIG. 12 (
A) and (B) are flowcharts of this embodiment.

FIG. 2(A) is a flowchart showing an interrupt routine and a key manual routine, and FIG. 12(B) is a renumber routine.

In FIG. 9, 7 is a first power supply circuit for constantly operating the microcomputer 100, 8 is a transformer for supplying AC power to the first power supply circuit 7, and 9 is a power supply circuit other than the microcomputer +00. A second power supply circuit for supplying the required voltage to the circuit, lO is a transformer for supplying AC power to the second power supply circuit 9, and 11 is a transformer lO.
It is connected to the input side of O and turns on the second power supply circuit 9.
Power relay to turn off, I2 is power switch,
13 is an LED for displaying the renumber, +4 is an LED for displaying auto power off to indicate that the power switch is turned off after the renumber operation is completed; the power switch 12 is connected to the input port of the microcomputer 100; LED13. +4 is connected to the output port of the microcomputer 100. Furthermore, the power relay 11 is controlled by a microcomputer 100.

Next, the operation of this embodiment will be explained based on the flowcharts of FIGS. 12(A) and 12(B).

In FIG. 12, step S83 is a power switch on/off identifying means, and step S90 is a renumbering operation identifying means for identifying a renumbering operation.

First, when the power switch 12 is turned on in a state where the power is not turned on (step 580), the microcomputer 100 performs steps SBI, S82.
Based on S83, a message indicating that the power switch is turned on is displayed (step 584).

In addition, the microcomputer 100 also has a power relay 11.
The second power supply circuit 9 supplies power to circuits other than the microcomputer 100. Therefore, this DAT becomes operational.

In this state, for example, when a key is pressed to place the cassette in a tray and move the cassette to a predetermined position, the key is analyzed based on the determination in step S82 (step 585) and necessary operations are performed.

And renumber key 5 for performing renumber operation.
When is pressed (step 380), a renumber operation instruction is issued (step 386), and execution of the routine shown in FIG. 12(B) begins.

First, a flag is set at the CND address of the RAM of the microcomputer 100 to indicate that the renumbering operation is in progress, and further,
L E D 1 that indicates that renumbering is in progress
3 is turned on (step 587).

Subsequently, a renumbering operation is performed (step 388), and the tape is further rewound.

During the renumbering operation (step 588) in FIG. 12(B) described above, the power switch! When 2 is pressed (
Step 380), Step S81. Based on the determinations in S82 and S83, step S90 is executed. RAM now
Since a flag indicating that the renumbering operation is in progress is set at the CND address of
4 is turned on (step 591).

Then, step S9 of the routine shown in FIG. 12(B)
In 2, the above-mentioned auto power off display LED
14 lights up, the power relay 11 is turned off,
All circuits other than the microcomputer 100 are rendered inactive.

In addition, in step S92, the power switch! If 2 is not pressed, the program rewinds and then stops (step 594).

Further, if the power switch 12 is pressed during an operation other than the renumber operation (step 580), step S
81. S82. S83. Based on S90, the power is immediately turned off as before (step 595).

(Embodiment 7) FIG. 13 is a block diagram showing the seventh embodiment, and FIG. 14 (
A) and (B) are flowcharts of this embodiment.

FIG. 14(A) is a flowchart showing an interrupt routine and a key manual routine, and FIG. 14(B) is a search routine.

In FIG. 13, 108a is a preparation key (hereinafter referred to as af'ter rec key) provided on the key 108.
, 108b is an UP key for instructing a search, 108c
is the DOWN key that similarly instructs the search, and the UP
The DOWN key and DOWN key are used to instruct the search direction.

Next, the operation of this embodiment will be explained based on the flowcharts of FIGS. 14(A) and 14(B).

In FIGS. 14(A) and (B), afterrec
When a key other than the key is pressed (step 5IOI), key analysis is performed based on the judgment in step 5I02 (step 5I03), and a required routine is executed according to the result of this key analysis. When is pressed (step Sl old), step 5
R of the microcomputer 100 based on the judgment of 102
A flag is set at the AFTF address of AM (step 5I04).

Next, when the UP key 108b instructing a search is pressed, key analysis is performed based on the determination in step 5102 (step 3103), and according to step 5103, the key is analyzed (step 3103).
) is executed.

In the search routine, when the search for 5-ID is completed (step 5105), the process moves to a pause routine based on the determination in step 5106, and is temporarily stopped at the beginning of 5-ID (step 5I07).

In this state, it has stopped at the beginning of the 5-ID, so the erase key (er a
By pressing the s e key), the desired 5-ID can be surely deleted.

(Embodiment 8) FIG. 15 is a block diagram showing an eighth embodiment, and FIG. 16 is a diagram schematically showing a 5-ID and an erased portion on a magnetic recording tape.

In FIG. 15, steps 5111 and S115 are a timer, S in FIG. 16 is a 5-ID recorded for 9 seconds, and E is an erased portion recorded subsequent to the 5-ID.

Next, the operation of this embodiment will be explained based on the flowchart of FIG. 15.

5-Press the write key for ID writing instruction,
5-Prepare to write 1 to ID (step 5IIO)
Start the timer (write 5-ID in the subcode with step Sll+1 (step SI+2)
. Eventually, when the timer counts 9 seconds, writing of the 5-ID is completed (step 5113).

S in FIG. 16 shows a state in which the above-mentioned 5-ID has been written for 9 seconds.

Subsequently, preparations are made to write O instead of the above-mentioned 1 to 5-ID (step SI+4), and a timer is started (step SI+5). Then, O is written after 5-ID (step SI+6). Eventually, when the timer counts 9 seconds, the write operation described above is completed.

E in FIG. 16 shows the erased portion where 5-ID was erased for 9 seconds.

In this way, in the 9 seconds immediately after 5-ID, the subcode 5
Since 0 was written in the part where -ID is written, it is no longer possible to write 5-ID in this part.

(Embodiment 9) FIGS. 17 and 18 are flowcharts showing a ninth embodiment.

In FIG. 17, step 5132 identifies whether the 5-ID is being recorded when the STOP key is pressed.
- ID recording operation identification means, step 5 in FIG.
136 is a timer that measures the writing time of 5-ID.

Next, the operation of this embodiment will be explained based on FIGS. 17 and 18.

When the recording rec key is pressed in the stopped state (
Step 5120), Step 5I21゜3122,
Based on the judgments 3I23 and 5124, the machine enters a pause state, and the RECLED and PAUSE LED (both not shown), which indicate that the rec key has been pressed, light up (step 5125).

In this state, adjust the input level of the recording signal and try again.
When the c key is pressed (step 5120), step 512
PAUSE based on the judgment of 1, 5I22, 5123
The LED goes out and the recording state is entered (step 512).
6).

Next, when the write key is pressed to write the 5-ID (step 5120), steps 5121 and 3
Based on the judgments of 122 and 3127, it is determined whether the current state is a recording state (step s+28).The write key of 5-ID is not accepted unless recording is in progress, but in the above state, recording is in progress. From further, 5-ID
is being recorded (step 512).
9).

If the 5-ID is being recorded, there is no need to accept the write key, so no key is accepted, but if the 5-ID is not being recorded, the 5-ID is written in response to the 5-ID write instruction (step 5I30). ).

Then, when the STOP key is pressed while writing the 5-ID (step S +20), the process proceeds to step S121.
Based on the judgment of
(step 5).
131). Since recording is currently in progress, turn off the RECLED, and then identify whether or not 5-ID is being recorded (
Step 5132).

If the 5-ID is not being recorded, it will be stopped according to the instruction of the STOP key (step 5I33), but since the 5-ID is currently being recorded in step 5130, the necessary processing to bring it to the stopped state will be performed. The process moves to the RECEND routine to be executed (step 5134).

In RECEND (Figure 18), we first record a silent recording state (RECMU) in which muting is applied to the input signal.
TE ON) (step 5135)
RECEND DJ is displayed (step 5I35). Next, since the timer is counting the time recorded by 5-ID, the recording of 5-ID and the no-signal recording state described above continue until this timer counts 9 seconds (step 5).
137) Then stop (step 5138).

In this way, in this embodiment, STOP is performed during recording of 5-ID.
The complete 5-ID is recorded because the DAT does not stop immediately when the key is pressed.

Note that when the STOP key is pressed, the PN on the display
It may be configured such that the O display portion (not shown) displays in text that the STOP key has been pressed.

(Example 10) FIG. 19 is a flowchart showing an example of the ID.

Note that in this embodiment, step 5132 in FIG.
s-1,D is being processed?'' At this step, ST
It is determined whether it has been within 18 seconds since recording of the 5-ID was started when the OP key was pressed. Therefore, in this embodiment, step 5132 is a 5-ID recording operation identifying means that identifies whether or not it has been within 18 seconds since the start of 5-ID recording when the STOP key is pressed.

In addition, in FIG. 19, step 5140 is a timer that counts the writing time of 5-ID, and step 514
3 is a timer that measures the 9 seconds following 5-ID.

Next, this embodiment will be explained based on the flowcharts of FIGS. 17 and 19.

When the recording rec key is pressed in the stopped state (
Step 5120) Step S 1213122, 3
Based on the judgment of I23 and 3124, the pause state is entered and the RECLED and P indicating that the rec key has been pressed.
AUSE LED lights up (step S+25).

In this state, adjust the input level of the recording signal and try again.
When the c key is pressed (step 5120), step SI2
+, 5I22, PAUS based on the judgment of 5123
E The LED goes out and the recording state is entered (step 5l)
Z6).

Next, when you press the write key for writing 5-ID (step S+ZO), steps 5121, 3
122 and 5127, it is determined whether the current state is a recording state (step 5128).The write key of 5-ID is not accepted unless recording is in progress, but in the above state, recording is in progress. From further, 5-ID
or a predetermined signal is being recorded immediately after 5-ID (hereinafter referred to as 5-ID processing) (step 5129).

If 5-ID is being processed, there is no need to accept the write key, so no key will be accepted, but if 5-ID is not being processed, the 5-ID write instruction will cause the 5-ID to be
is written (step 5130).

Then, when the STOP key is pressed during the processing of 5-ID (step 5120), it is determined whether the current state is recording (or recording-stopping) based on the determination in step 5121. is done (step 5131). Since recording is currently in progress, turn off the RECLED, and then
[Identify whether or not D is being processed (step 51)
32).

If SID processing is not in progress, it will be stopped according to the instruction of the STOP key (step 5I33), but now, step 3
Since the SID is being processed at step 130, the process moves to the RECEND routine where necessary processing is performed until the system is stopped (step 5134).

In the RECEND routine (Figure 18), first, a silent recording state (RECMUT) in which muting is applied to the input signal is performed.
E ON) (step 5135) and rR
ECENDDJ is displayed (step 5I35). Next, when the STOP key is pressed, if 0 is written in the 5-ID writing part of the subcode, so-called 5-ID is being erased, step 5 is performed based on step 5140.
Execute 143. Therefore, the above operation is continued for the remaining time, and when the timer counts 9 seconds, it is stopped (step 5138).

Further, in step 5140, if the 5-ID is being written, the writing of the 5-ID is continued according to step 5141 until the timer counts 9 seconds. 5-I
When writing of D is completed, O is written in the 5-ID writing portion of the subcode. Then, when the timer counts 19 seconds (step 5143), the timer becomes stopped (step 5I38).

(Embodiment 1) Figures 20 (A), (B), and (C) are flowcharts showing the 11th embodiment. ) is a cue routine, and FIG. 20(C) is a review routine.

In FIG. 20(A), step S+41 is a preparation key-on state detection means for detecting that the preparation key has been pressed, and the preparation key is already shown as 108a in FIG.

Next, the operation of this embodiment is shown in Fig. 20 (A), (B), and (C).
This will be explained based on the flowchart.

To erase the skip-ID on the magnetic recording tape,
When the preparation key (afterrec key) for instructing the write operation and erase operation of the skip-ID is pressed (step 5I40), a flag is set in the AFTF address of the RAM of the microcomputer 100 based on the determination in step 5141 ( Step 5142).

Next, when the play key is pressed (step 5140), step S141. Based on the judgments in S143 and S144, a key analysis of the pressed key is performed and the PLAY state is entered (step S+45).

In this state, when the fast forward key (hereinafter referred to as ff key) is pressed (step 5140), step S14+
, S143, step 5146 is executed. In step 5146, if the play key or pause key is not pressed before pressing the ff key, a fast forward operation will be performed (step 5147), but since the play key has already been pressed, a cue operation will be instructed ( Step 5148), c in FIG. 20(B)
Moving on to the ue routine.

In the Cue routine, a cue operation is performed (step 5I).
50), skip-ID was not detected (step 5I5
1), and if the ff key is pressed, the cue operation is repeated. If you release your hand from the ff key in this state, a play operation will be performed based on the determination in step 5I53 (step 5154), but step S150.
Skip- during cue operation of S15+, S152
When the ID is detected (step S15, a pause operation occurs (step 5I55). Then, in this state, if the erase key for erasing the skip-ID is pressed, the desired skip-ID is erased.

Similarly, pla after the rec key is pressed
In the y state, press the rewind key (hereinafter referred to as rev key) (Step 5I40), Step S14
1. S 143. Step 8156 is executed based on the determination at S144. In step 5156,
If the play key or pause key is not pressed before pressing the rev key, the rewind operation will be performed (step 5157), but since the play key has already been pressed, the review operation will be instructed (step 5157).
I58), the process moves to the review routine of FIG. 20(C).

In the review routine, a review operation is performed (
Step 5160), if no skip-ID is detected (step 5I61) and the rev key is pressed, the review operation is repeated. If you release your hand from the rew key in this state, a play operation will occur based on the judgment in step 5163 (step 5164), but
Step 5I6O3+61. S 162 review
When skip-ID is detected during w operation (step 5I
61), resulting in a pause motion (step 5I65).

In this state, if the erase key for erasing the skip-TD is pressed, the desired skip-ID is erased.

(Embodiment 12) FIG. 21 is a flowchart showing the twelfth embodiment.

In FIG. 21, step 5172 detects the presence or absence of 5-ID when the pause state changes to the recording state.
D detection means.

Next, the operation of this embodiment will be explained based on FIG. 21.

When the rec key for recording instruction is pressed in the stop state, the recording pause state is entered (step S170).
), and press the rec key again (step 51
71) 5- on the magnetic recording tape at the time of recording
It is checked whether the ID is recorded (step 5172).

If 5-ID is not recorded at the recording start position of the magnetic recording tape, the PTIME address for time counting in the RAM of the microcomputer 100 is set to O, and the previous PN
The PNO incremented by O is stored in the PNOW address of the RAM (step 5I73), and 5-ID is recorded in the subcode part on the magnetic recording tape as the recording state, and the value of the PTIME address of the RAM is referred to and p
program time from 0 to old, then P
This PNO is written with the value of the NOW address as a new PNO (step 5I74). Writing to the above subcode part is continued for 9 seconds while incrementing PTIME (step 5I75) (step 517).
6), 0 is written in the 5-ID writing portion of the subcode for the next 9 seconds (step S'17?). Then, necessary recording is performed (step 5178).

Also, when 5-ID is detected in step 5I79, R
The program time of the recording start position is stored in the AM time count PTIME address, and the PNO recorded at the recording start position is stored in the PNOW address (step 5I79). Then, in the recording state, magnetic recording is performed, and the subcode portion on the tape contains 5-ID, PNO, which is the value of the PNOW address, and pr, which is the value of the PTIME address.

gram time in steps S175 and S17.
6, record for 9 seconds.

In this way, in this embodiment, since the 5-ID detection means is provided to detect the presence or absence of the 5-ID when the recording state changes from the pause state, the 5-ID at the recording start position of the magnetic recording tape is detected.
5-ID in the correct format is recorded at the recording start position regardless of the presence or absence of the 5-ID.

(Example 13) FIG. 22 is a block diagram showing the thirteenth embodiment.

In Fig. 22, +10 is P for detecting the presence or absence of PNO.
NO presence/absence detection circuit, III is PNO presence/absence detection circuit 110
This is a storage circuit for storing a detection signal that is output only when detecting 5-ID in which PNO is not written.

And input terminal 110a of PNO presence/absence detection circuit + ID
is connected to the output port of the microcomputer 100, the output terminal 110b of the PNO presence detection circuit + ID is connected to the set input terminal 110a of the memory circuit I11, and the output terminal 111c of the memory circuit II+ is connected to the input port of the microcomputer +00. is connected to.

Further, the output ports of the 10 microcomputers are connected to the reset input terminal 111b of the memory circuit II+.

In the DAT configured in this way, when the cassette is set on the tray and a tape is loaded, the microcomputer 100 connects the reset input terminal 111b of the memory circuit 111.
The memory circuit 111 is cleared by outputting a reset signal to the memory circuit 111.

Then, when the tape is running during playback or fast forwarding, the 5-
When detecting a 5-ID whose ID is set and whose PNO is 0AAH (I old/old/old 0), the PNO presence/absence detection circuit 11G outputs a set signal, and the storage circuit 111 stores this signal. .

If the set signal, which is the output signal of the PNO presence/absence detection circuit 1ID, is not set in the memory circuit Ill, it becomes possible to input the program key for instructing program operations and the numeric keys O to 9 and +ID for PNO instructions. However, in the above-described state, the microcomputer 100 does not perform any program operation, so the program key is not accepted.

Note that even if the PNO presence/absence detection circuit +10 detects 5-ID where PNO is 0AAH during the program operation, the PNO presence/absence detection circuit 110 outputs a set signal, so the program operation is stopped at that point. has been done.

In this embodiment, the PNO presence/absence detection circuit 11G and the memory circuit I
Although the program operation is controlled by means ll and ll, it is also possible to use means having a similar function using software.

(Embodiment! 4) FIG. 23 is a block diagram showing a fourteenth embodiment, and FIGS. 24(A) and (Th) are flowcharts of this embodiment. FIG. 24(A) is a flowchart showing an interrupt routine and a key manual routine, and FIG. 24(B) is a fast forward (ff>routine).

In FIG. 23, 108e is a key (hereinafter referred to as rec, mode key) provided on the key 108 that instructs to search for a non-recorded portion of the tape and also instructs to perform predetermined initial settings in the case of a blank tape. and
Step S18.1 is a key-on state detection means that detects that the recmode key has been pressed.

Next, the operation of this embodiment will be explained based on the flowcharts of FIGS. 24(A) and 24(B).

In FIGS. 24A and 24B, when a key other than the recmode key is pressed (step 5180), key analysis is performed based on the determination in step S181 (step 5182), and the required However, when the rec mode key 108e is pressed now (step 5180), the microcomputer 10 is executed based on the determination in step S181.
A flag is set at the RMF address of RAM 0 (step 5183).

Next, press the ff key to fast forward and step 31
Key analysis is performed based on the determination in step 81 (step 518).
2) % According to this key analysis, the fast forward (ff) routine of FIG. 24(B) is executed.

In the fast forward routine, based on the judgment in step 5184, if the tape is currently being recorded, the last part of the unrecorded part is searched, and if the tape is blank, necessary operations such as taking the unrecorded part of lODmm from the end of the leader tape are performed. After the initial settings have been made.

The state is set to REC PAUSE (step 5).
186).

Further, if the ff key is pressed while the rec mode key 108e is not pressed, fast forward operation is performed based on the determination in step 5184, and if the 5 top key is pressed (step 5188), the stop routine is performed (step 5189).

If the S-- SOP key is not pressed, the fast-forward operation continues according to the judgments in steps S187, S188, and S190 until the end of the tape is reached. When the end of the tape is reached, the rewind routine is entered (step 5I91).
), a rewinding operation is performed.

When recording in this way, load the cassette and then
If you press the ec mode e key and then the f key, if the cassette is a blank tape, the necessary initial settings will be made, or if the tape is currently being recorded, it will search for unrecorded areas and enter the pause state. This makes recording operations easy.

(Example 15) Figures 25 and 26 show the 15th example.
FIG. 25(A) is a flowchart of a key manual routine which is an interrupt routine, and FIG. 25(B) is a flowchart of a relative search routine. FIG. 26(A) is a diagram showing the search process for a song five songs ahead from the song currently being played.
It shows the relationship between the 5-ID on the tape, the memory contents of the RAM of the microcomputer (TPNO, 5PNO), and the running state of the tape. FIG. 26(B) is a diagram showing the process of searching for a song five songs after the currently playing song, and shows the 5-ID on the tape, the memory contents (TPNO, 5PNO) in the RAM of the microcomputer, and the This shows the relationship with driving conditions.

Next, the operation of the main parts of this embodiment will be explained in FIGS.
This will be explained based on the flowchart of B).

When the play key is pressed (step 5zoo), step S201. S 202. The pressed key is analyzed based on the determination in step S203 (step 3204).
It enters the PLAY state.

In FIG. 26(A), SA is the 5-ID currently playing, and SA is the S of the song to be searched.
-ID, SA,,SA,,SA1. SA4 is each 5-TD of the songs between 5-lDSA6 and SAa, ■ indicates the position on the tape currently being played, and TP indicates the tape running direction and the operating state of DAT. It shows.

Next, in this state, the fifth song from the one currently being played (S
-ID is SA, ) to play this song, first instruct a relative search and press the up key to instruct the direction of the search (step 5200). When the current state is checked based on the judgment in step S201,
The current state is that the up key has only been pressed and a relative search is not in progress.
+oIJ (step 3206), followed by a relative search instruction (step 3207).

Next, there is a sign "+" indicating the song 5 songs after the currently playing song.
and "5" are entered using the numeric keys (step 3200).
), step S201. S 202. S 203
Step 5208 is executed based on the determination. In step 5207, since a relative search instruction has already been given, the value of TPNO (search target value) is set to "+5" according to the numeric keys (step 3209), and as shown in FIG.
Moving on to the relative routine of B).

In step 3210, the value at address 5PNO (hereinafter referred to as 5PNO) of the RAM of the microcomputer 100 provided for counting the number of songs is cleared, and the value of TPNO and 5PNO are cleared.
The value of PNO is compared (step 5211). TPN
Since the value of O is +5 and the value of 5PNO is O, the PLAY state is changed to fast forward operation based on the judgment at step 5211. 5PN at the rising edge of each 5-ID
While incrementing the value of O, the value of 5PNO becomes TPN
The fast forward state continues until the value becomes equal to the value of O (step S213. S2+43215).

Eventually, the 5th 5-ID SA, 0 points at the start of the 5-ID SA, 5
When the value of PNO and the value of TPNO are both "+5" and equal, the head reaches the QA+ point on the tape due to the fast forward state, and the fast forward state is then switched to the review operation (step 3226). In this state, 5-ID
When the falling @ of SA is detected (step 5227)
Since the head is at the QAI position on the tape, if you start playback now (step 3228), the 5-LD of the 5th track will be played.
The search and cue for SAs songs are completed (step 52).
29).

Next, a case will be described in which, contrary to the above-described example, a search is made for a song five songs earlier and the beginning of the song is searched.

In Figure 26 (B), SBo is the 5-I currently being played.
D and SB is the 5-ID of the song that is being searched.
%SB+, SBm, SBs, and SB4 are the respective 5-IDs of the songs between S-ID sea and 5I3s, and ■ indicates the position on the tape currently being played.

Next, in this state, play the fifth song from the one currently being played (
To play this song by searching for S-ID (S-ID is SBa), first instruct a relative search and press the down key to instruct the direction of the search (step 3200).
. When the current state is examined based on the judgments in steps S201 and S2G2, the current state is that the down key has only been pressed and that a relative search is not in progress, so the value of TPNO in the RAM of the microcomputer 100 is (Step 5217) Next, a relative search instruction is issued (Step S2+8).

Next, the symbols "-" and "
5" using the numeric keys (step 3200).
Step S201. S 202. Step 5208 is executed based on the determination in S203. Step 3
Since the relative search instruction has already been given in step 218, the value of TPNO (search target value) is set to "-5" according to the numeric keys (step 5209), and as shown in FIG.
Moving on to the relative routine of B).

In step 5210, the value of 5PNO of T' (AM) of the microcomputer 100 provided for counting the number of songs is cleared and the value of TPNO and 5PNO are compared (
Step Sel+).

Since the value of TPNO is -5 and the value of 5PNO is 0, the PLAY state is changed to the rewind operation based on the judgment in step 5211. Decrementing the value of 5PNO at each rising edge of 5-ID, the value of 5PNO (
The rewinding state continues until it becomes equal to the value of TPNO-1) (steps S220.S221.S2)
22).

Eventually, the 6th 5-ID SR, rise ■ point TS
Both the PNO value and (TF'NO-1) (7) value are "-6".
” (step 52ZO), and S −I
When the falling edge of DSBg is detected (step 5Z23), the head is positioned at QB on the tape due to the rewinding state, so the rewinding state is switched to the cue operation (step 5224). When the rising edge of S-I D sBa is detected (step 5225), the head moves to the QB on the tape,
Therefore, the queue state is switched to the review operation (step 3226). In this state, the S-I D
When the falling edge of SBa is detected again (step 52
27) Since the head is at the position of QBs on the tape, if the playback operation is started here (step 3228), the search and cue for the 5-lDSB8 song, which is the 5th song before, will be completed (
Step 5229).

In this way, in this embodiment, the search direction is specified by 2.
There are two search keys and a number key, and the music to be searched for is specified using the two search keys and the number key.

(Example 16) Figures 27 and 28 show the 16th example, and the 27th example
The figure is a block diagram, FIG. 28(A) is a flowchart of a key manual routine, and FIG. 28(B) is a flowchart showing a display portion of the recording or playback routine.

In FIG. 27, +08f is a reset key for the display (not shown). Further, in FIG. 28 (A) CB>, step 5231 is a reset key detection means for detecting that the reset key has been pressed, and step 5232 is when the reset key detection means detects that the reset key IQ8f has been pressed. Abso at that time 1. ute-t
Storage means for storing ime, step 5234 is Abs
Ab stored in the storage means first from olute-time
This is an arithmetic means for subtracting the solute-time.

Next, the operation of this embodiment is shown in Figs. 28 (A) and (B).
6 Now, for example, pl
When the reset key 108f of the display unit is pressed during the ay operation (step 323G), the current Abso Iute-
time (hereinafter referred to as A-TIME) is stored in the RTIME address of the RAM of the microcomputer 100 (step 5232). FIG. 28(B) is a part of the playback routine, in which the A-TIME
is finally read (step 5233), and this A-T
Subtract RTIME from IME (Step 5234)
This subtraction result (DTIME) is displayed on the display.

Therefore, in this embodiment, when the reset key 108f is pressed, the time from the reset state is displayed, so that it is possible to know the elapsed time from the recording/playback state. Moreover, since the Absolute-time recorded on the tape is used, the displayed value is accurate.

(Example +7) Fig. 2g, Fig. 23, and Fig. 24 (A) show a seventeenth embodiment, and Fig. 29 and Fig. 24 (A) are flow charts of this embodiment.

In FIG. 29, step 5243 is a tape end detection means, and step 5257 is a search means for the last PNO of the recorded portion.

In addition, 108e in FIG. 23 is a key (rec mode) that instructs to search for an unrecorded portion of the tape, and also instructs to perform predetermined initial settings in the case of a blank tape.
key), and the key-on state detection means for detecting that this key is pressed is step 8181 in FIG. 24(A).
It is shown in

Next, the operation of this embodiment will be explained based on the flowcharts of FIG. 24(A) and FIG. 29.

In FIG. 24(A), when a key other than the rec mode key is pressed (step 5180), step 8
Key analysis is performed based on the judgment in step 181 (step 51
82) The required routine is executed according to the result of this key analysis, but now the rec mode key 10
When 8e is pressed (step 5180), step 31
RA of the microcomputer 100 based on the judgment of 81
A flag is set at the RMF address of M (step 51
83).

In FIG. 29, when the rec mode key 108e is pressed while the cassette is set, or when the cassette is set at a predetermined location with the rec mode key 108e pressed, the RAM of the microcomputer 100 is Since the flag is set at the RMF address, execution of the routine shown in FIG. 29 begins.

When the routine shown in FIG. 29 begins to execute, the A-
Read TIME (step 5240).

As a result, if A-TIME cannot be read, it is determined that there is a non-recorded portion, and a rewind state is entered (step 5241) (step 5242). Then, step S242.
While searching for the recorded portion of the tape based on the judgment in step S243, if the end of the tape is eventually reached, the process proceeds to step 5243.
Based on this judgment, the tape is fed 100 mm from the rear end of the tape, and initial values are set for PNO and A-TIME to enter the rec panse state.

Further, when the recorded portion is detected in step 5244, the last 5-ID is detected (step 5257), and the PNO of that 5-ID is stored in a predetermined location in the RAM (step 3258), and then the recording section is The end is searched, and the recpause state is entered there (step 52).
59).

If A-TIME can be read in step 3240, it is a recorded portion, and the last 5-ID is searched based on the judgment in step S241 (step 5260).
), the PNO of this 5-ID is stored in a predetermined location in the RAM (step 3261'), then the end of the recording section is searched and the rec pause state is entered there (
step 3262).

(Example +8) Figures 30 and 31 show the 18th example, and the 30th example
The figure is a flowchart, and Figure 31 shows the 5-ID on the tape, the PTIME written in the Program-time (PTIME) writing area, and the predetermined value (
This is a diagram schematically showing a state in which OA A I > has been written, and PTIME is written within 18 seconds from the rise of 5-ID (in Figure 31, 012 in lO base). ...expressed as 1718), 5-I
0AAH is written in advance after 18 seconds from the rise of D.

Next, the operation of this embodiment will be explained based on the flowchart of FIG. 30.

5-When the write and e keys (not shown) are pressed to write TD (step 5270), it is determined whether the current operating state is in play or in ec based on step 5271. (step 5272)
. If not in play or rec, wr of 5-ID
The ite key is not accepted, but reads the PTIME on the current tape if it is playing or rec. If the PTIME value is not 0AAH, the read value is the predetermined PTIME, and PTIME is written up to 18 seconds, so the current head position on the tape (
In section R1 of FIG. 31), the write key of 5-ID is not accepted (step 5273).

Furthermore, if the read value of PTIME is equal to 0AAH (step 5273), the current head position on the tape is in the R2 portion of FIG. 31, so the 5-ID Wr i
If the te key is accepted, the 5-ID is written (step 5274).

In this way, this embodiment uses a simple configuration to identify whether or not 5-ID can be written.

(Embodiment 9) FIGS. 32(A), 32(B), 32(C), and 32(D) are flowcharts showing the 19th embodiment.

FIG. 32(A) is a flowchart of the key manual routine;
FIGS. 32(B), 32(C), and 32(D) are flowcharts of a rewind routine, a search routine, and a playback routine, respectively, in which only the intro scan portion of each routine is extracted.

and step 3286. S293 is an intro scan identification means for identifying whether or not the intro scan function is in operation.

Note that the relative search in Figure 32 (C) is as shown in Figure 25 (
Since it means the relative search routine shown in B),
A description of this routine will be omitted.

Next, the operation of this embodiment is shown in Fig. 3z (A) CB) (C).
CD) will be explained based on the flowchart.

Intro scan key to perform intro scan (
(not shown) (step 3280), a flag for operating the intro scan is set based on step 3281, and an LED (not shown) indicating that the intro scan is in operation is lit. (Step 32B2) First, issue a rewind instruction to rewind the tape to the beginning of the tape.Step 32B
3) Proceed to execution of the rewind routine shown in FIG. 32(B).

The tape is rewound until it reaches the tape end BOT (Step 5285), and since the flag indicating intro scan is now set and the LED is lit, a search instruction for the first song is given (Step 3287), and the 32nd track is searched. Proceed to execute the search routine shown in Figure (C).

Then, in step 8288, the flag was set in step 8283 to indicate that the up child key was pressed, so
A fast forward state is entered to search for the beginning of the next song (step 3289).

Based on the determination in step 5290, the relative search routine shown in FIG. 25(B) is executed until the end of the tape is reached, and the beginning of the song is sequentially searched (step 5291).

Since the value of TPNO is set to +1 in step 5287, the relative routine always searches for the S-summer of one transaction.

Playback operation in relative search routine (Figure 32 (D))
If an intro scan is instructed (step 52
93), Step S to play for a predetermined time
292. S293. S294), and then further instructs to search for the next song (step 5295).
) The operation continues until the tape end (EOT) is reached.

When the intro scan is performed until the end of the tape is reached (step 5296), the flag instructing the intro scan operation is lowered and the LED is turned off (step 52).
9i tape is rewound (step 5297).

In the rewind routine, since the flag indicating the intro scan has already been lowered and LEI') is off, the tape run is stopped based on the judgment in step 8286 and the intro scan operation is ended (step 8286). 3298).

In addition, as means for indicating that the intro scan operation is in progress, a flag or turning on/off of the LED is used, and by identifying the state of the flag or the turning on/off of the LED, it is possible to reliably identify whether or not the intro scan operation is in progress. I can do it.

(Example 20) Figures 33 and 34 show the 20th example, and the 33rd example shows the 20th example.
The figure is a flowchart, and FIG. 34 is a diagram showing the relationship between the position j8 on the tape and the running state (speed) of the tape.

In FIG. 33, step S301 is a calculation means for calculating the difference between the absolute time to be searched and the currently displayed absolute time, and steps S302 and S303
．． S304. In S305 and S306, different tape running speeds are set according to the respective calculation results.

In Figure 34, ■ is the position on the tape that you want to search, ■ is the position 1 second before the position of ■ in terms of playback time, and ■
is the position 5 seconds before the position of ■ in terms of playback time, [phase] is ■
IO seconds before the position in playback time, O is 1 minute before the position in ■, ■ is at least 1 minute before position in playback time, ■ is EOT from the position in ■. It shows the side position.

Next, the operation of this embodiment will be explained based on the flowchart of FIG. 32.

Before starting the search operation, first select the A that you want to search on the tape.
When bsolute-time (A-TIME) is set according to a predetermined procedure, the set value is memorized at address R3TIME (hereinafter referred to as R3TIME) in the RAM of microcomputer 100.

The position of the search target on the tape is indicated by ■ in FIG.

For example, if the head is at point 0 on the tape,
Read A-T I ME with 0 points (step 3300).

Next, find the difference between the read A-TIME and R3TIME, and set this calculation result as WTIME (step 33
01). WTIME in step S302. S 30
3. S304. S305. Since it does not correspond to any of S 306, it is 200 times faster than fast forwarding (2
00 position FF) is set to fast forward state (step 3307)
.

While repeating the above loop in this state, W
If TIME is greater than 11 minutes and less than -10 seconds, that is, the head reaches between [phase] -0 on the tape shown in FIG. The state is changed to fast forwarding at twice the speed (50x FF) (step 330B).

Furthermore, A-TIME and R read in step 5300
When WTIME, which is the difference from 3TIME, is more than 110 seconds and less than -5 seconds, that is, when the head reaches between [phase] -■ on the tape shown in FIG.
Based on step 305, the tape speed is further reduced to a state of nine times the speed of cue (9 times cue) (step 3309).

Similarly, if WTIME, which is the difference between A-TIME and R3TIME read in step 330, is greater than 15 seconds and less than -1 second, that is, if the head is Step 530 when reaching between ■-■ above
Based on 4, the speed is further reduced to a state of 3 times the speed of the cue (3x cue) (step 3310).
.

In this way, WRIME, which is the difference between A-TIME and R3TIME read in step 5300, will eventually be
11 seconds or more and less than O, that is, ■- in Figure 34
■When the time is reached, the speed is set equal to the playback state based on step 5303 (step 5312), A-T I
While reading ME (step 5312) A-T
This state continues until IME and R3TIME become equal, and when A-TIME and R3TIME become equal (step 5313), the playback routine enters the playback state (step 5314).

Next, the head is located at point 0 on the tape, and
- If searching for TIME, step 33
Since WTIME based on 00 and step 3301 is positive, the rewind state is set based on step 5302 (step 5315). Eventually, when the tape is rewound to a point between ■ and ■ in FIG. 34, the tape running is stopped. And the third
If it is rewound to the phase between [phase] and -2 in FIG. 4 and then stopped, the 9x cue state and then the 3x cue state are set as described above, and then the playback operation is started to complete the search.

In this way, in this embodiment, the search for the position on the tape is performed using the Absolute-tim recorded on the tape.
Since the search is performed while reading e, the position on the tape can be found accurately.

(Example 21) FIGS. 35 and 36 show the 21st example, and the 35th
Figure 36 is a flowchart showing the relative search routine.
Figure (A) shows the search process for a song five songs ahead of the currently playing song, and shows the relationship between the 5-ID on the tape, the memory contents (TPNO) of the microcomputer's RAM, and the running state of the tape. It shows. FIG. 36(B) is a diagram showing the process of searching for a song five songs after the currently playing song,
It shows the relationship between the 5-ID on the tape, the memory contents (TPNO) of the RAM of the microcomputer, and the running state of the tape.

Next, the operation of the main parts of this embodiment will be explained based on the flowchart of FIG. 35.

In FIG. 36(A), SA is the 5-I currently being played.
D, and the S-ID of the song that SA is trying to search for.
, SAI, SAs, SAs, SA4 are each 5
-ID SA, and each 5- of the songs between and SA,
In the ID, ■ indicates the position on the tape currently being played, and TP indicates the running direction of the tape and the operating state of the DAT.

Next, in this state, the fifth song from the one currently being played (S
- ID is SA@) to play this song, when a search instruction is given, before the relative routine in Figure 35 is executed, the TPNO address of the RAM of the microcomputer +00 (hereinafter referred to as TPNO) is +5 is stored in memory.

Therefore, based on the determination at step 3321, the fast forward operation state is entered (step 3322).

If the position on the tape where the search for the first song is instructed is ``■'' in Figure 36 (A), then the value of TPNO is decremented at each rising edge ``■'' of 5-ID until the value of TPNO becomes equal to O. The fast-forward state continues until (steps S323.S324°5325).

Eventually, when the value of 5PNO and the value of TPNO become equal to 0 at the 0 point of the fifth rise of S-I D SAs, the tape reaches the point OA due to the fast forward state, so the switch from the fast forward state to the review operation is made here. (Step 5336) In this state, when the falling edge of S-I D sAs is detected (Step 5337), the head is at the position of QAt on the tape, and after a predetermined period of time has elapsed (Step 5339), the head is at the position of QAt on the tape. The running direction is reversed at the position, and the tape is run at the same speed as in the playback state. After the mechanism part +01 enters the play state, muting is turned off and 5-ID S
A.

The search is completed by searching for the signal recorded at position QA several hundred m5ec before (step 3340).

Next, a case will be described in which, contrary to the above example, a search or cue is performed for a song five songs earlier.

In FIG. 36(B), SB is the 5-I currently being played.
S-I D of the song that is D and SR, is trying to search
, SB, ,SQ, ,SB, ,SB, are each 5-
5-I of each song between ID 38G and SB@Do
In D, ■ indicates the position on the tape currently being played.

Next, in this state, select the song 5 songs before the song currently being played (S
- ID is SB, ) When playing this song, when a search or cue instruction is given, the microcomputer 1
-6 is stored in TPNO of RAM 00.

Therefore, based on the determination at step 5321, the rewind operation state is established (step 5329).

If the position on the tape at which the search for the first track is instructed is indicated by ■ in FIG. 36(B), the value of TPNO becomes equal to 0 while incrementing the value of TPNO at the rising edge @ of each 5-ID. The rewinding state continues until the end (steps S330.S331°5332).

Eventually, TP reached 0 point at the sixth rise of 5-IDsA+t.
When the value of NO becomes equal to O (step 5330) and the falling edge of S-ID sBa is detected (step 5333), the tape reaches OB due to the rewind state, so the tape is rewinded here. The state is switched to queue operation (step 5334). In this state, when the rising edge of S-ID SB is detected (step 5335), the head moves to 0 on the tape.
8. Therefore, the queue state is switched to the review operation (step 5336). In this state S-I
When the falling edge of DSBs is detected again (step 5337), the head is at the position of QBs on the tape;
O after a predetermined period of time (step 5339)
The running direction is reversed at position B4, and the tape is further run at the same speed as in the playback state. Mechanism part 101
After entering the play state, the muting is turned off and the signal recorded at the position QBs several hundred m5ec before S-ID SB is reproduced, and the search is completed (step 5340).

In this way, in this embodiment, the reproduction state is started before the rising edge of 5-ID, so that the reproduced signal does not become truncated.

(Example 22) FIGS. 37 and 38 show the 22nd example, and the 37th
The figure is a flowchart showing the music selection routine, Figure 38 (Δ
) is a diagram showing the song selection process of selecting the next song from the currently playing song based on the program number, and shows the program number recorded on the tape (hereinafter referred to as PNO) and the recorded contents of the RAM of the microcomputer +00. (Sr'NO
, TPNO) and the running state of the tape.

Figure 38 (B) is a diagram showing the song selection process in which the previous song is selected from the currently playing song based on the program number. It shows a relationship.

Next, the operation of the main part of this embodiment will be explained based on the flowchart of FIG. 37.

In Figure 38 (A), SAo is the 5-I currently being played.
With DT, SA,, SA,, SA,, SA, are each 5-ID SA. 5-I recorded in order after
It is D. PNO in the figure indicates the program number for each 5-ID, and the PNO corresponding to each 5-ID
NO: 2, S. 4. Assume that it is recorded as 6°7.

Next, in this state, the song being played (Fig. 38 (A)
When selecting a song with a PNO of 5 from 0 points), when a song selection instruction is given, before the song selection routine shown in FIG.
The TPNO address (hereinafter referred to as TPNO) has the P to select the song.
The NO value "5" is stored in memory.

In the music selection routine shown in Figure 37, first the currently playing PNO
is read (step 3350), and this PNO value is stored in the RAM (7) SPN of the microcomputer 1oo.
It is stored at address O (hereinafter referred to as 5PNO and Iu) (step 5351). Comparing the values of TPNO and 5PNO, which store the program number that is the target of music selection, the TPN
Since O is 5 and 5PNO is 2, step 535
Based on the judgment in step 2, the mode is set to fast forward mode (step 5353).
). While fast forwarding the tape, 5-ID is sequentially detected (step 5354), and when 5-ID is detected, its PNO is read (step 5355'), and the value of 5PNO is determined based on step 5356 and step 5357 (step 53).
Set the PNO value read in step 55 to 21 (step 3
358).

Then, the next 5-ID is read again and the above-described execution is repeated.

Eventually, before steps 5354 to 8358 are repeated, the third S-I D sAw is detected because the approximate PN ("1" does not exist) (step 5354).

When this PNO is read (step 5355), the value of PNO is "6", so based on the judgment in step 5357, T
Set the PNO value to "4", which is the value of 5PNO, and change the target program number for music selection here (step 5359).
).

Since the target program number for music selection has been changed, the music selection operation is performed again from step S351. Then, the value of PNO read in step 5355 is set to 5PNO, and TP
NOf7) value "4" is compared with the value "6" of 5PNo (step 5352). In this state, the tape has reached the point TA+ in FIG. 38(A), so step 535
2 (step 336G). Then, step 536 detects 5-lDSAs in the 1-rewind state.
1) Reading this PNO (step 5362'),
Since the value of TPNO and the value of 5PNO are equal to 41 (step 5363), when the falling edge of 5-ID is detected (step 5373), the tape moves as shown in FIG. 38(A).
Since TAa has been reached, the rewind state is now switched to the cue operation (step 5374). In this state, when the rising edge (2) of the 5-ID SAs is detected (step 5375), since the head is at position T^3 on the tape, the cue state is switched to the review operation (step 5376). In this state, S -I D s
When the falling edge of Aa is detected again (step 5377
) The head is at position T^4 on the tape, and after a predetermined time (step 37g), the tape running direction is reversed at the TAs position, and the tape is run at the same speed as in the playback state. let Mechanism part 101 is pla
After entering y state, muting is turned off and 5
- The signal recorded at @T A * several hundred m5ec before IDTAs is played back, and the music selection ends (step 3380).

Next, a case will be described in which a song with a lower program number is selected while a song with a higher program number is being played.

In Figure 38 (B), SB is the 5-
ID, and SBo, SB+, SBx, and SBs are 5-IDs recorded in order as SBO, SBl, SB, and SBI. PNO in the figure indicates the program number for each 5-ID, and
The PNOs corresponding to the IDs are 4゜6.7.8.
Assume that it is recorded as 9.

Next, in this state, the song being played (Fig. 38 (B))
When selecting a song whose PNO is 5 from 0 point), when a song selection instruction is given, the TPNO of the RAM of the microcomputer 100 is
The PNO value 5 for music selection is stored in memory.

In the music selection routine shown in Figure 37, first the currently playing PNO
The value of PNO is read (step 3350), and this value of PNO is stored in 5PNO of the RAM of the microcomputer 100 (step 5351). Comparing the value of 5PNO with the TPNO in which the program number that is the target of music selection is stored, TPNO is 5 and 5PNO is 9, so the rewind state is set based on the determination at step 5352 (step 3360). 5 in sequence while rewinding the tape.
-ID is detected (step 336+), and when 5-ID is detected, its PNO is read (step 3362), and based on steps 5363 and 5354, the value of 5PNO is set to "9", the value of PNO read in step $362. (Step 5366).

Then, the next 5-ID is read again and the above-described execution is repeated.

Eventually, before steps 5361 to 5365 are repeatedly executed, the fifth S'-ID SB is detected because the approximate PNO does not exist (step 3361). When reading this PNO, the value of PNO is "4", so based on the judgment in step 5364, the value of TPNO is set to "6", which is the value of 5PNO, and the program number of the target song selection is changed here. (step 5359).

Since the program number of the song selection target has been changed, step 5
The music selection operation is performed again from 351. And step 53
The value of PNO read in step 62 is set as 5PNO, and TPNO
The value "6" of 5PNO is compared with the value "4" of 5PNO (step 5352). In this state, the tape has reached the point TB in FIG. 38(B), so it is put into a fast forward state based on step 5352 (step 5353), and 5-ID SB+ is detected in the fast forward state (step 53).
54) and reads the PNO (step 5355) TPN
Since the value of O and the value of 5PNO are both "6" and equal (step 5356), a switch is made to the review operation (step 3376). In this state, the tape is
B) is located at TB.

When the falling edge of 5-IDSB is detected in the review state (step 5377), the head moves to the TBa on the tape.
After a predetermined time has elapsed (step 379), the running direction of the tape is reversed at the position TB, and the tape is run at the same speed as in the playback state. After the mechanism unit +01 enters the play state, muting is turned off and the signal recorded at position TB, several hundred meters before 5-ID SB, is reproduced to complete the song selection (step 3380).

(Example 23) Figures 39 and 40 show the 23rd example;
Figures (A) and (B) are flowcharts, and Figure 40 is a diagram showing the recording state of a tape after one splice recording.

In FIG. 40 (A), Ml is the first song that has already been recorded, Me is the last part of the first song M1, Ls is the silent recording part recorded during continuous recording, and M2 is the silent recording part. Mi
This is the second song recorded after ++.

Next, the operation of this embodiment will be explained based on the flowcharts of FIGS. 39(A) and 39(B).

If the rec key is not pressed in the STOP state, the review operation is performed to rewind for a predetermined time step S390°5391), and then the rec pause state is entered (step S53).
92). After that, when the rec key is pressed again (step 5393), the rec display is displayed and the rec mut
e state (step 5394), and after recording a silence state for a predetermined time over the last part Me of the first song M, (step 5394)
M2m in Figure 0 (A) ), record the second song M, (
step 5396).

In this way, when the second song M2 is spliced to the first song M, a silent recording section MsN is created, so even if the first song M1 is repeatedly spliced, no unerased parts will be left. Furthermore, the recording time of the first song M1 does not become shorter each time the recording is continued.

(Example 24) FIG. 41 is a block diagram showing the twenty-fourth embodiment.

In the figure, 17 is a switch for stopping the rotation detection function of the reel (not shown), and 18 is a tape end sensor l.
Detection circuits 12a and 12b, 19 a detection circuit using reel FG sensors 1I3a and 113b, 20 a NOT circuit, 21 an AND circuit, and 22 an OR circuit.

And the output port of microcomputer 100 is NO.
It is connected to the input terminal of the AND circuit 21 via the T circuit 20, and the output terminal of the detection circuit 19 is also connected to the input terminal of the AND circuit 21. Also, the detection circuit! 8 and AND
The outputs of the circuit 21 are both input to an OR circuit 22, and the output of the OR circuit 22 is led to an input port of the microcomputer 100.

In the DAT configured as described above, when the switch 17 is in the OFF state, the output of the NOT circuit 21 is set to the "H" level, so the output of the detection circuit 18 is set to "H" level by the tape end sensors 1I2a and ll2b. I(
“Level or reel FG sensor I 13
a, I 13b causes the output of the detection circuit 19 to be “1-1”
"Once the level is reached, the microcomputer 100 will
Since the "14" level is input through the R circuit 22, the microcomputer +00 controls the mechanism section 101 to a stop state.

Next, when performing torque measurement, if the switch 17 is turned on, the microcomputer +00 outputs the "H" level to the NOT circuit 20, so the output of the NOT circuit 20 becomes "L" level, and therefore Since the output of the detection circuit 19 is not guided to the microcomputer 100, torque measurement can be performed even when the reel is not rotating.

In this embodiment, the AND circuit 21 is controlled by turning on and off the switch 17 to temporarily stop the reel rotation detection function, but other circuit configurations may be used if the reel rotation detection function can be temporarily stopped. good.

(F) Effects of the Invention Since the present invention is configured as described above, it produces the following effects.

1. In the DAT according to claim 1, even if a cassette is loaded with a non-recorded portion, the end of the recorded portion is automatically searched, so that splicing becomes easy. Furthermore, it is possible to prevent a situation in which the recorded portion is divided into several parts.

2. In the DAT according to claim 2, since a timer is provided, the last part of the unrecorded portion can be reliably detected without malfunction. Therefore, it is possible to reliably prevent a situation in which the recorded portion is divided into several parts.

3. In the DAT according to claim 3, the search means for searching the end of the recorded portion of the magnetic recording tape is constituted by the review operation setting means and the reproduction operation setting means, so that the review operation and the reproduction operation are automatically performed. Therefore, the rear end of the unrecorded portion can be reliably detected without malfunction.

4. In the DAT according to claim 4, a recording presence/absence determination circuit for determining the presence or absence of a recording signal, a reproduction signal check circuit for determining the error rate of the reproduction signal based on the output signal of the signal processing section, and a timer; Since a search means for searching the end of the recorded portion of the magnetic recording tape is provided, the end of the non-recorded portion can be reliably detected without malfunction.

5. The DAT according to claim 5 includes a recording presence/absence determination circuit for determining the presence or absence of a recording signal, a reproduction signal checker circuit for determining the error rate of the reproduction signal based on the output signal of the signal processing section, and a timer. Since the search means includes the review operation setting means and the reproduction operation setting means, the last part of the unrecorded portion can be reliably detected without malfunction.

6. In the DAT according to claim 6, when the recording presence/absence determination circuit detects a non-recorded portion on the magnetic recording tape, a rewinding operation is performed.

Therefore, for example, even if a cassette is loaded with a non-recorded portion, it will be rewound to the end of the recorded portion, making splicing recording easier.

7. In the DAT according to claim 7, keys other than the renumbering stop key are not accepted during the renumbering operation, thus preventing the renumbering operation from being erroneously canceled.

8. In the DAT according to claim 8, if the power switch is pressed during the renumbering operation, the power is turned off after the renumbering is completed. Therefore, there is no need to wait for a long time until the renumbering operation is completed, and operability is improved.

9. In the DAT of claim 9, when the preparation key is pressed, 5
- After searching for the ID, it enters a pause state.

Therefore, by pressing the erase key after that, the 5-ID can be easily and reliably erased.

10. In the DAT of claim IO, a timer is provided to measure the time to write the 5-ID, so even if a new 5-ID is written in the area where the 5-ID is recorded, the 5-ID is
The ID recording time is always 9 seconds, and the following 5-
A predetermined time can also be secured between the ID and the ID.

! 1. In the DAT of the eleventh aspect, even if the STOP key is pressed during recording of the 5-ID, the DAT does not stop immediately but stops after recording the complete 5-ID.

12. In the DAT of claim I2, if the STOP key is pressed during writing of the 5-ID, the recording state immediately becomes silent, so that unnecessary audio signals are recorded while recording the 5-ID of a predetermined length. Never.

13. In the DAT of claim 13, even if the STOP key is pressed during processing of %5-ID, the DAT does not stop immediately. Therefore, the complete 5-ID is recorded and further this 5-ID is recorded.
During the 9 seconds following rD, the S•-ID can be completely erased.

14. In the claimed DAT, when the STOP key is pressed during 5-ID processing, a silent recording state occurs immediately, so unnecessary audio signals are recorded while recording a 5-ID of a predetermined length. Never.

15. In the DAT of claim 15, skip-ID
When this is detected, the device enters a pause state, and in this pause state, the skip-ID can be easily erased by pressing the eraSe key for erasing the skip-ID.

16. The DAT according to claim 16 is provided with a 5-ID detection means for detecting the presence or absence of 5-ID on the tape when the recording state changes from the pause state, so that the 5-ID in the correct format is recorded at the recording start position regardless of the presence or absence of the -ID.

! 7. In the DAT of the seventeenth aspect, since a PNO presence/absence detecting means for detecting the presence or absence of a PNO is provided, there is no possibility that a desired program operation is not performed during a program operation.

18. In the DAT of claim 18, when recording, by setting the cassette, pressing the rec mode key, and then pressing the ff key, if the cassette is a blank tape, necessary initial settings are made, and during recording. If it is a tape, it will search for unrecorded areas and enter a pause state, making recording operations easier.

19. The DAT according to claim 19 is provided with two search keys for instructing the search direction and a numeric key, so when performing a relative search (for example, searching for optical sound for 10 songs from the currently playing song), the search can be performed easily. You can instruct the search for a desired song using the keys and number keys.

Therefore, search instructions can be easily given.

20. In the DAT according to claim 20, the difference between Absolute-t, ime and the Absolute-time stored in the storage means is determined by the storage means for storing the Absolute-time when the reset key of the display device is pressed. Since the calculation means is provided and the calculation result by this calculation means is displayed on the display, it is possible to know the accurate elapsed time of recording and playback. Furthermore, since the Absolute-time recorded on the tape is used, the displayed value is accurate.

21. In the DAT according to claim 21, when the tape end detection means detects the tape end, initial recording settings of the DAT tape are performed.
Predetermined initial settings are made not only in the ime but also in the PNO. Therefore, the recording operation has become easier.

22. In the DAT of claim 22, when recording,
If the cassette is set and the REC MODE key is pressed, or if the cassette is set after the REC MODE key is pressed, the last part of the recorded portion of the tape being recorded is searched, making the recording operation easier.

23. In the DAT of claim 23, a search means is provided for the last PNO of the recorded portion, and the value obtained by incrementing this PNO value is written as the next PNO. Therefore, when recording, the Abso I ute-time is Of course, continuous predetermined values are recorded in PNO as well.

24. In the DAT of claim 24, the read Pr
Since the 5-ID can be written only when the value of ogram-time is equal to a predetermined value, the configuration is simple and the narrow memory area is not occupied.

25. In the DAT of claim 25, an intro scan identification means is provided for identifying whether or not the intro scan function is in operation, and the intro scan is performed based on the identification result of the intro scan identification means. There is no need to provide a dedicated routine for scanning.

Therefore, the narrow memory area is not compressed.

26. In the DAT according to claim 26, the search for a position on the tape is performed using an Absolute recorded on the tape.
- Since the search is performed while reading the time, the position on the tape can be found accurately.

27. In the DAT of claim 27, since the reproduction state is started at a position before the rising edge of 5-ID, the reproduced signal will not be cut off at the beginning when searching for the beginning of a song or searching for a song.

28. In the DAT of claim 28, in a DAT in which music is directly selected by designating a program number, if the corresponding program number does not exist, the music with the program number closest to the designated program number is selected. This improves operability.

29. In the DAT of claim 29, a silence state is recorded for a predetermined period of time on the magnetic recording tape, and then a desired signal is recorded, so that continuous recording is repeatedly performed multiple times after the same song. Also, the recording time of the previous song does not become shorter each time you try to splice recording.

30. In the DAT of claim 30, when performing torque measurement, the reel rotation detection function can be temporarily stopped with a switch, so that torque can be measured using the torque cassette in a state where the reel is not rotating.

Furthermore, during normal use, the tape can be stopped quickly at the tape end.

31. In the DAT of claim 31, when the STOP key is pressed during recording of the 5-ID, the display indicates that the STOP key has been pressed.

Therefore, it can be easily confirmed that the STOP key has been accepted.

32. In the DAT of claim 32, when the STOP key is pressed during recording of 5-ID or during the 9 seconds immediately following 5-ID, the display indicates that the STOP key has been pressed. Ru.

Therefore, it can be easily confirmed that the STOP key has been accepted.

33. In the DAT of claim 33, characters are displayed in the PNO display portion of the display so that it can be identified that the STOP key has been pressed, so that the meaning of the display can be easily identified.

[Brief explanation of the drawing]

1 to 41 show an embodiment of the DAT according to the present invention, FIG. 1 is a block diagram of the main part, FIG. 2 is a diagram showing the connection state, and FIG. 3 is a flowchart of the first embodiment. , FIG. 4 is a flowchart of the second embodiment, FIG. 5 is a flowchart of the third embodiment, FIG. 6 is a diagram showing the relationship between the recording state of the magnetic recording tape and the search state based on the flowchart of FIG. 5, and FIG. The figure is a block diagram of Embodiment 4, and FIG. 8 is Embodiment 4.
9 is a block diagram of the fifth embodiment, FIG. 10 (A) and (B) are flow charts of the fifth embodiment,
Figure 11 is a block diagram of the sixth embodiment, Figures 12 (A) and (B) are flowcharts of the sixth embodiment, Figure 13 is a block diagram of the seventh embodiment, and Figures 14 (A) and CB) are implementation examples. Example 7
15 is a flowchart of Example 8, FIG. 16 is a diagram schematically representing the 5-ID and erased portion on a magnetic recording tape, and FIGS. 17 and 18 are flowcharts of Example 9. , FIG. 19 is a flowchart of Example ID, FIG. 20 is a flowchart of Example II, and FIG.
Figure 1 is a flowchart of the 12th embodiment, Figure 22 is a block diagram of the main parts of the 13th embodiment, Figure 23 is a block diagram of the 14th embodiment, and Figures 24 (A) and (B) are examples! 25(A) and 25(B) are the flowcharts of Embodiment 15, and FIG. 26(A) shows the 5-ID on the tape showing the search process for a song 5 songs ahead from the currently playing song. Memory contents of microcomputer RAM (TPNO, 5PNO)
FIG. 26 (B) is a diagram showing the relationship between
) is a diagram showing the relationship between the 5-ID on the tape, the memory contents of the RAM of the microcomputer (TPNO, 5PNO), and the running state of the tape, showing the process of searching for a song 5 songs after the currently playing song. 27 is a block diagram of the 16th embodiment, FIGS. 28(A) and 28(B) are a flowchart of the 16th embodiment, FIG. 29 is a flowchart of the 17th embodiment, FIG. 30 is a flowchart of the 18th embodiment, and FIG. 31 is a diagram for explaining Example 18, and shows 5-5 recorded on the tape.
ID and programtime write area PTI
FIG. 32 is a flowchart of Example 19, FIG. 33 is a flowchart of Example 20,
FIG. 34 is a diagram showing the relationship between the position on the tape and the running state (speed) of the tape for explaining Example 20;
FIG. 35 is a flowchart of Example 21, and FIG. 36 (A
)(B) is a diagram showing the relationship between 5-ID and the tape running state for explaining Example 21, and FIG. 37 is Example 2.
2 flowchart, FIG. 38 (A>(B) is Example 2
5-A diagram showing the relationship between ID, PNO, and tape running state to explain 2, FIG. 39 (A) and (B) are flowcharts of Example 23, and FIG. FIG. 41 is a diagram showing the recorded state of the tape in Example 24.
FIG. 42 to 50 show conventional embodiments, FIG. 4z is a block diagram, FIG. 43 is a diagram schematically representing the recording state on the magnetic recording tape, FIG. 44 is a flowchart, and FIG.
Figure 5 is a diagram schematically showing the 5-ID and the erased portion on the magnetic recording tape, Figures 46 and 47 are flowcharts, and Figure 48 shows the positional relationship between the 5-ID and the recorded signal. 49(A), 49(B), and 49(C) are diagrams schematically showing the state of continuous recording, and FIG. 50 is a block diagram. 101: Mechanism section 1 port 4: Converter section 105: Signal processing section 106: Recording/playback amplifier 107: Servo circuit 108: Key 109: Display 110: PNO presence/absence detection circuit 111: Recording circuit 11Za, 1lZb: Tape end sensor 113a,
113b: Reel FG sensor Description of main symbols 1: Recording presence/absence determination circuit 3: Playback signal check circuit 5: Renumber key 6: Renumber stop key 11: Power relay 12: Power switch 100: Microcomputer

Claims (1)

[Claims] 1. In a DAT having a recording/playback amplifier and a signal processing section, a recording presence/absence determination circuit for identifying the presence or absence of a recording signal based on the output signal of the recording/playback amplifier and the signal processing section; A DA characterized in that it is provided with a search means for searching for the last end of the recorded portion of the magnetic recording tape based on the output signal of this circuit.
T. 2. If a timer is installed and the playback signal cannot be detected continuously for a predetermined period of time set in advance during playback,
2. The DAT according to claim 1, wherein the search means is configured to search the last part of the recorded portion. 3. The search means for searching for the last part of the recorded portion of the magnetic recording tape is composed of a review operation setting means and a playback operation setting means, and is configured to perform a playback operation after executing the review operation based on the output signal of the recording presence/absence determination circuit. The DAT according to claim 1, characterized in that the DAT is configured as follows. 4. In a DAT having a recording/playback amplifier and a signal processing section, a recording/presence determination circuit for identifying the presence or absence of a recording signal based on the output signals of the recording/playback amplifier and the signal processing section; A reproduction signal checking circuit for determining the error rate of the reproduction signal based on the output signal, a timer, and a search means for searching for the last part of the recorded portion of the magnetic recording tape is provided, and the output signal of the recording presence/absence determination circuit or the reproduction The DAT is characterized in that the search means searches the last part of the recorded portion when any of the output signals of the signal check circuit is not at a predetermined level for a period of time preset in the timer. 5. The search means for searching the last end of the recorded portion of the magnetic recording tape consists of a review operation setting means and a reproduction operation setting means, and either the output signal of the recording presence/absence determination circuit or the output signal of the reproduction signal check circuit is sent to the timer. 5. The DAT according to claim 4, wherein the DAT is configured to perform a playback operation after executing a review operation if the level is not at a predetermined level for a preset period of time. 6. In a DAT having a recording/playback amplifier and a signal processing section, a recording presence/absence determination circuit is provided to identify the presence or absence of a recording signal based on the output signal of the recording/playback amplifier and signal processing section, and this recording/presence determination circuit is provided. A DAT characterized in that the circuit is configured to perform a rewinding operation when a non-recorded area on a magnetic recording tape is detected. 7. Renumber operation identification means for identifying whether a renumber operation is in progress in a DAT capable of renumber operation;
A DAT comprising: a renumber stop key for forcibly interrupting a renumber operation, and configured to accept only the renumber stop key during the renumber operation. 8. In a DAT whose renumbering function is controlled by a microcomputer, the first
a second power supply circuit for operating circuits other than the microcomputer, and a power switch on/off identification means for identifying that the power switch of this DAT has been pressed during renumber operation. A DAT characterized in that, when the power switch is pressed during a renumbering operation, the second power supply circuit is turned off after the renumbering is completed based on the power switch on/off identification means. 9. S-ID can be written and erased, and S-ID
A DAT that makes it possible to search for the S-ID is provided with a preparation key for writing or erasing the S-ID, and preparation key-on state detection means for detecting that the preparation key is pressed, and the preparation key-on state detection means The DAT is characterized in that it performs a search operation when it detects that a preparation key has been pressed, and enters a pause operation after the search is completed. 10. In a DAT that can write and erase the S-ID, a timer is installed to measure the time to write the S-ID, and based on this timer, the S-ID is written for 9 seconds and the S-ID is erased for 9 seconds immediately after that. A DAT characterized by being configured as follows. 11. In S-ID writable DAT, S-
A timer for measuring the writing time of the ID and an S-ID recording operation identifying means for identifying whether or not the S-ID is being recorded when the STOP key is pressed are provided. S-ID recording operation identification means is S-I
When it is detected that D is being recorded, it does not stop immediately and starts recording a predetermined 9 times based on the time measured by the timer.
A DAT characterized in that it is configured to write an S-ID for seconds and then stop. 12. The DAT according to claim 11, wherein after the STOP key is pressed, the input signal is muted and enters a silent recording state. 13. In S-ID writable DAT, S-
A timer that measures the ID writing time and the 9 seconds immediately after that, and an S-ID that identifies whether it has been within 18 seconds since S-ID recording started when the STOP key was pressed.
ID recording operation identification means is provided, and when the S-ID recording operation identification means detects that it has been within 18 seconds since the S-ID recording started when the STOP key is pressed, the S-ID recording operation is not stopped immediately. Write the S-ID for a predetermined 9 seconds based on the time measured by the timer, and
A DAT characterized in that an S-ID erasing operation is performed for 9 seconds following D and then stopped. 14. The DAT according to claim 13, wherein after the STOP key is pressed, the input signal is muted and enters a silent recording state. 15. In a DAT capable of queue operation, review operation, and writing and erasing of skip-ID, the above-mentioned skip
- A preparation key for instructing an ID writing operation and an erasing operation, and preparation key-on state detection means for detecting that the preparation key is pressed, and the preparation key-on state detection means detects when the preparation key is pressed. A DAT characterized in that the DAT is configured to perform a pause operation when a skip-ID is detected during a cue operation or a review operation after detecting that a skip-ID is detected. 16. On a DAT that allows writing of the S-ID, PNO, and programtime, the S-I on the tape when the pause state changes to the recording state.
An S-ID detection means is provided to detect the presence or absence of the S-ID.
When the ID detection means detects the S-ID, programtime is started at the time of recording start.
At the same time as writing me, the recorded PNO is successively written to the subcode, and furthermore, the S-ID for 9 seconds is completed, and when the S-ID detection means does not detect the S-ID, programtime is written from 0. and write the PNO incremented by the previous PNO,
Furthermore, the DAT is characterized in that it is configured to complete an S-ID for 9 seconds. 17. A programmable DAT is provided with a PNO presence/absence detection means for detecting the presence or absence of a PNO.
A DAT characterized in that the program is disabled when the presence/absence detection means detects an S-ID in which no PNO is written. 18. On a DAT capable of fast forwarding, there is a key that instructs to search for unrecorded portions of the tape and to make certain initial settings in the case of a blank tape, and a key-on button that detects when this key is pressed. and a state detecting means, and when the fast forward key is pressed after the key-on state detecting means detects that the key is pressed, the end of the recorded portion of the tape is searched based on the detection result of the key-on state detecting means. A DAT characterized by being configured as follows. 19. In a DAT that has a search function to search for recorded songs, two search keys and a number key are provided to indicate the direction of the search, and the song to be searched is specified using the two search keys and the number key. A DA characterized by being configured as follows.
T. 20. In a DAT equipped with a display for displaying Absolute-time, a reset key for resetting the display contents of the display, and reset key detection means for detecting that the reset key is pressed; When the reset key detection means detects that the reset key has been pressed, the Absol at that time
A storage means for storing ute-time, and an Absolu
te-time and Absolu stored in the storage means
te-time; and a calculation means for determining the difference between the DAT and te-time, and a calculation result by the calculation means is displayed on the display. 21. In a DAT capable of rewinding, a key for instructing a search for a non-recorded portion of the tape and, in the case of a blank tape, for instructing to perform predetermined initial settings;
A key-on state detecting means for detecting that the key is pressed and a tape end detecting means are provided, and after the key-on state detecting means detects that the key is pressed, the tape end detecting means detects the end of the tape. A DAT characterized in that it is configured to perform initial recording settings for a DAT tape based on the detection result of a tape end detection means. 22. In a DAT capable of rewinding, a key for instructing a search for a non-recorded portion of the tape and, in the case of a blank tape, for instructing to perform predetermined initial settings;
and key-on state detection means for detecting that the key has been pressed, and when the key-on state detection means detects that the key has been pressed, the end of the recorded portion of the tape is detected based on the detection result of the key-on state detection means. A DAT characterized in that it is configured to search for a part. 23. Claim 18, characterized in that a search means is provided for searching for the last PNO in the recorded portion, and a value obtained by incrementing the value of this PNO is written as the next PNO.
DAT according to description or claim 22. 24. In a DAT that can write and read S-ID and Program-time, the read P
A DAT characterized in that an S-ID can be written only when the value of program-time is equal to a predetermined value. 25. In a DAT equipped with an intro scan function that sequentially searches songs while playing for a predetermined time from the beginning of the song, an intro scan identification means is provided to identify whether or not the above intro scan function is in operation, and this intro scan function is provided. A DAT characterized in that it is configured to perform an intro scan based on the identification result of the scan identification means. 26. Absolute-time displayable DAT
In this step, a calculation means is provided for determining the difference between the search target Absolute-time and the currently displayed Absolute-time, and a tape speed corresponding to the calculation result of this calculation means is set, and the tape speed is set according to the calculation result. A DAT characterized in that it is configured to search for a target absolute time on a tape while changing the tape speed. 27. In a DAT that detects the S-ID and enables song cueing or song searching, the S-ID is detected during a review operation for song cueing or searching.
A DA characterized in that it is configured to enter a playback operation state after a predetermined period of time from the falling edge of an ID.
T. 28. In a DAT that allows you to directly select a song on a magnetic recording tape where a program number is recorded by specifying the program number, if the program number you want to search is not recorded, and at the time of song selection. If the program number is larger than the program number you want to select, select a song with a program number that is larger than the program number you specified and that is closest to the program number you specified, and if the program number you want to search for is not recorded. In this case, if the program number at the time of song selection is smaller than the program number you want to select, the program selects a song with a program number smaller than the program number you instructed to select, and whose program number is closest to the program number you instructed to select. A DAT characterized by being configured as follows. 29. A DAT for recording a desired signal such as a music signal on a magnetic recording tape, characterized in that the magnetic recording tape is configured to record a silent state for a predetermined period of time, and then record the desired signal. D.A.T. 30. A DAT configured to detect the tape end using a reel FG sensor and a tape end sensor, characterized in that a switch is provided to temporarily stop the reel rotation detection function. 31. The DA according to claim 11 or 12, wherein after the STOP key is pressed, the DA is configured so that it can be displayed on a display so that it can be identified that the STOP key has been pressed.
T. 32. The DA according to claim 13 or 14, wherein after the STOP key is pressed, the DA is configured so that it can be displayed on a display so that it can be identified that the STOP key has been pressed.
T. 33. After the STOP key is pressed, characters are displayed on the PNO display portion of the display so that it can be identified that the STOP key has been pressed. D.A.T.