JPS63299522A - Radio voice recorder - Google Patents

Abstract

PURPOSE:To completely record and store a desired broadcast at and after the head part by stopping the recording action at a position preceding by the prescribed length the position where a signal is supplied to switch an endless recording action to a storage recording action. CONSTITUTION:An input device 1c serves as a switch that is operated by an operator, etc., and supplies a signal to switch an endless recording mode to a storage recording mode when the radio voices are recorded and stored. When said signal is supplied, a controller 1b continues the recording actions successively at the position where the signal is supplied and stops the recording actions at a position preceding a point where the recording action has one round. Thus the broadcast preceding by the prescribed length a time point when a signal is supplied from the device 1c is recorded and stored at a time point desired by the operator or a point preceding slightly said time point. As a result, a desired broadcast can be completely recorded.

Description

[Detailed description of the invention] <Industrial application field> The present invention relates to a radio audio recording device.

<Prior Art> Recording radio broadcasts has been widely used in the past, and this recording is usually performed using magnetic tape such as a tape recorder. Recording using magnetic tape has the advantage that there is no limit to the recording time and it is relatively easy to save, but on the other hand, it is necessary to prepare equipment such as a tape recorder in advance, and it is necessary to prepare the desired part while listening to the broadcast. It was difficult to quickly record the information at any time. Therefore, in recent years, Japanese Patent Application Laid-Open No. 61-225930 has proposed a means that uses a semiconductor memory, miniaturizes the recording means, and incorporates it into the radio body to record broadcasts whenever desired.

In any case, with conventional radio audio recording devices, even if you try to record the necessary part while listening to a radio broadcast, the contents of the recording means such as magnetic tape or semiconductor memory as described above will not be lost. Sometimes, the beginning of the part you want to record has already passed, making it impossible to record completely.

<Summary of the Invention> The present invention has been made to solve the above-mentioned conventional drawbacks, and includes a means for receiving broadcast waves, a means for endlessly recording the received information, and a storage recorder for storing the endless recording. and a means for controlling the recording means to stop recording at a position a predetermined length before the position at which the signal is input by means of the signal. This is a characteristic feature.

<Example> Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a schematic diagram thereof. 3 is an antenna, 4 is a tuner, 5 is an IF/detection circuit, 6 is an audio amplifier, and 2 is a channel selection control circuit. Since these configurations are those of a normal radio receiver, their explanation will be omitted.

The radio receiver X having the above configuration includes a recording device 1a and a control device 1.
b. An input device 1c is provided.

The recording device 1a inputs the broadcast from the audio amplifier 6,
This is recorded endlessly. That is, when the recording capacity is saturated, new broadcasts are sequentially recorded while erasing old records, constantly updating and refreshing the recorded contents.

The input bag [1c is a switch etc. operated by the operator, and the operator operates this when he wants to save a record.
A signal for switching from the endless recording mode to the storage recording mode is input.

The control device 1b receives this signal and controls the recording device 1a. That is, recording is continued sequentially from the position where the signal is input, and the recording is stopped before the recording reaches the position. The stopping position may be determined at a predetermined length before the current position according to various conditions and requests.

As a result, the broadcast for a predetermined length before the time when the signal was input from the input device 1c is saved and recorded.

Therefore, it is possible to save and record from the time when the operator decides that he or she wants to record, or from a time slightly earlier than that, and complete recording can be performed. Furthermore, if the data is saved and recorded from a slightly earlier point in time, the context of the recording becomes clear, which is effective for later editing.

FIG. 2 shows the detailed configuration. Note that this system is configured to record audio information that identifies the broadcasting station along with the radio audio, and the audio information that identifies the broadcasting station can be very useful as an index when playing back the recorded content. That's how it is.

The tuning control circuit 2 includes a local oscillation circuit (not shown) included in the tuner 4, a low-pass filter 21, a programmable divider 229, a phase comparator 23, a frequency divider 24. It is composed of a reference signal generator 259 and a channel selection switch 26. These constitute a phase-locked loop system selection circuit.
The programmable divider 22 is programmed using data 28 set by the channel selection switch 26 to select a desired broadcasting station. Further, 27 transmits data 28 set by the channel selection switch 26 to the programmable divider 22.
This is a control signal for loading into.

The data 28 is also supplied to the control circuit 11 and used to search for broadcast station names as will be described later.

The phase-locked loop type channel selection circuit described above is a well-known technology that is widely known at present, and therefore detailed description thereof will be omitted.

Each configuration of the recording device 1a, control device 1b, and input bag [1c described above includes a control circuit 11, an audio recording circuit 12, and a switch 1.
This is realized by 4. Also, station name data file 1
3 is for recording audio information specifying a broadcasting station.

The control circuit 11 is a control circuit mainly composed of a microcomputer, and as described above, the channel selection control circuit 2
Data 28, which is frequency information, is input from. A switch 14 is connected to the control circuit 11, and receives a signal from the switch 14 to read the data 28 from the channel selection control circuit 2, and also controls the audio recording circuit 12 and the station name data file 13 to select the desired station. It is configured to record and reproduce broadcast audio and audio information specifying a corresponding broadcast station. The audio recording circuit 12 is the control circuit 11
Under the control of the audio amplifier 6, the audio signal from the audio amplifier 6 is constantly digitized and endlessly recorded in the internal memory.

That is, the configuration is such that digitized audio data is recorded while being updated sequentially. Although semiconductors, magnetic tapes, etc. can be used as this memory, 22 uses semiconductor memory.

When a signal is input from the switch 14 and a recording command is output from the control circuit 11, the audio recording circuit 12 continues recording for a predetermined time from that point, and records the broadcast audio a predetermined length before the signal input position. Stop recording. Therefore, the record will not be updated after this point, and the record will be maintained and saved for the time after the predetermined length of time before the signal input from the switch 14.

Further, in this embodiment, audio information indicating the broadcasting station name from the station name data file 13 is recorded in a continuous area of the memory. In other words, station name data file 1
3, audio information indicating the name of a broadcasting station is stored in advance as digital audio data. Each broadcast station name data is stored using frequency information as an index. The audio information indicating the broadcasting station name may be one in which the name of the broadcasting station is directly pronounced, or the frequency may be pronounced. FIG. 5 shows a specific example of the data structure of the station name data file 13. As is clear from the illustration, it is composed of an area 51 for storing one frequency data and an area 52 for recording audio data. The frequency data has a one-to-one correspondence with the broadcasting station name, and the data is read out while maintaining this correspondence upon access from the control circuit 11.

The control circuit 11 obtains frequency data based on the tuning data 28 from the tuning switch 26 of the tuning control circuit 2, searches for the name of the broadcasting station being received from the station name data file 13, and retrieves the broadcasting station name data. is output, and the audio recording circuit 12
recorded in a predetermined area.

Next, details of the audio recording circuit 12 and station name data file 1
3. Details of the control circuit 11 will be explained based on FIG.

The audio recording circuit 12 includes a digital audio processing circuit 31, a switch A32, an audio data memory 33, a switch B34, an amplifier 36, and a speaker 37. An audio signal is inputted from the audio amplifier 6 to the digital audio processing circuit 31, which is configured to digitize the signal to generate digital audio data. Further, it may have a function of synthesizing an audio signal based on digitized data. Furthermore, in this embodiment, a part of the memory control function is provided. As such an element, for example, T6668 made by Toshiba etc. is known, and it is also possible to use these commercially available elements. This digital audio processing circuit 31 receives the control signal 10 from the control circuit 11.
8. The control signal 108 includes a recording or playback mode designation signal, an audio data write area designation signal, and an operation start or operation stop signal. In the recording mode, the broadcast audio signal supplied from the audio amplifier 6 is digitized and the audio data is output to the data line 107. At the same time, an address signal and a write signal are output to the bus 101, and digitized audio data is recorded in a predetermined area of the audio data memory 33.

Switch B34 connects data line 1 to audio data memory 33
06 and data line 107 or 109 selectively. Further, the switch A32 is also used to selectively connect the bus 102 and the bus 101 or 103 to the audio data memory 33. These switches are controlled by a control signal 104 from a control circuit 11. A state in which the bus 102 is connected to the bus 101 and a state in which the data line 107 is connected to the data line 106 is defined as mode 1, and a state in which the data line 107 is disconnected is defined as mode 2.

In the playback mode, the data line 10 is transmitted from the audio data memory 33.
An audio data signal is outputted to 5, converted into an audio signal by a digital audio processing circuit 31, and outputted as audio to an amplifier 36 and a speaker 37.

The control circuit 11 receives and stores the channel selection data 28 as described above. At the same time, the address bus 110 for the station name data file 13 is sequentially changed to f1+broadcasting station name,
f2+broadcasting station name, -111.

Each piece of data is sequentially outputted to the data line 111 as shown in FIG. 1, and compared with the stored station selection data. If they match, the address of the broadcasting station name data is stored. Then, specify the address via the bus 110.

Broadcasting station name data at that address is output from the station name data file 13 to the data line 109. Meanwhile bus 103
, 102 to specify an address for storing the broadcasting station name data, and at the same time supply a write signal to record the data in the audio data memory 33.

An example of the structure of data recorded in the audio data memory 33 is shown in FIG. 41 is the start address of the memory, n
is the final address, but in actual operation it is used endlessly. In other words, if there is no broadcast that you wish to record and the switch to the storage recording mode is not controlled (however, once the audio signal has been recorded, after the recording is cleared), the audio of the input broadcast will be are recorded one after another. Since the memory capacity is limited, each time new data is input, the previous data is updated.

During this operation, when a command to save and record is given at the memory address +1, audio data corresponding to the desired broadcast audio signal is recorded up to address i. Subsequently, audio data of the broadcasting station name is recorded from address i+1 to address j. From address j+1 to address, audio of the broadcast for a predetermined length before the preservation/recording command is issued, that is, the beginning part of the desired broadcast or a continuous broadcast prior to the preservation/recording command is recorded. During playback, playback starts from the broadcast station name, and is played in the following order: the broadcast station name, the audio immediately preceding the audio of the desired broadcast, and the audio that includes the desired broadcast.

According to such a configuration, since the broadcast before the signal input by the switch 14 is saved and recorded, there is no need to drop the recording of the beginning part of the broadcast that the user wishes to save, and furthermore, it is possible to save and record from a moment before the broadcast. Since it is also possible to do this, the context of the recorded content becomes clear, which has the advantage of being extremely convenient for editing work and the like.

Next, the operation will be explained. First, Figure 6 shows the overall flowchart of the recording device.
The state is cleared (step 150), and step 150
-Y, the process goes through step 160 and endless recording is performed (step 200). During endless recording, it is monitored whether or not recording control is performed (step 250). When recording control is detected (step 250-Y), radio audio is first recorded (step aOO).

When radio audio recording is completed (step 36o), broadcast station name recording is performed (step 400), and when broadcast station name recording is completed (step 460), the process proceeds to step 150 where it is determined whether clear control has been performed. return.

If clearing is controlled (step 150-Y), the same operation as above will occur.

If clearing is not controlled (step 150-N), it is determined whether playback control is being performed (step 550). If playback is not controlled (step 550-N), the process returns to step 150 and waits for clearing or playback control. If playback is controlled (step 550-Y),
The already recorded broadcasting station name and audio signal are reproduced and audio is output (step 600). When the playback ends (step 660), the process returns to step 150.

Figure 7 shows the endless recording (step 20) in Figure 6.
0) and radio audio recording (step 300).

Steps 201 to 207 are endless recording (
Step 200) from Step 301 to Step 30
5 respectively indicate radio audio recordings (step 300).

When the control circuit 11 in FIG. 3 is controlled to clear (
Through step 150-Y) and step 160, switch A32 and switch B34 are controlled to mode 1 to change bus 101 to bus 102.

Connect each data line 107 to the data line 106 (
Step 201), furthermore, the digital audio processing circuit 31 is set to recording mode via the control line 108 (step 2).
02). The writing area for the audio data memory 33 is specified to the digital audio processing circuit 31 (step 203), and in order to leave data writing to a certain block to the digital audio processing circuit 31, the recording start is then sent to the control line 108. (step 204).

The digital audio processing circuit 31 digitizes the audio signal input from the audio amplifier 6 and performs predetermined processing (details omitted).
The audio data is then supplied to the audio data memory 33 via the data lines 107 and 106, and at the same time an address signal and a write signal are supplied via the buses 101 and 102 to write the audio data (step 205).

The control circuit 11 monitors the bus 101, and when the writing by the digital audio processing circuit 31 completes one predetermined block, it performs control to advance the block (step 206).
). At the same time, it is checked whether the recording of the broadcast audio signal is controlled (step 250); in this check, the control is not performed (step 250-N);
Furthermore, it is checked whether the incremented address of the audio data memory 33 is the last address (n) (step 207), and if the result of the check is NO (step 207-N), the process returns to step 205 and the above steps are repeated.

If the check result is YES (step 207-Y),
Return to step 203 and repeat the above.

On the other hand, if the result of the check in step 250 is YES (step 250-Y), the radio audio recording operation in step 300 in FIG. 6 is performed.

In step 301, the control circuit 11 reads the current address of the audio data memory 31 via the bus 101 ((k+1) in FIG. 4).

Based on +1 to the address, a predetermined recording area is secured and an address i at which recording is to be stopped is calculated (step 30
2) At the same time, data is recorded (step 303), and the memory address is incremented (step 304).

It is checked whether the address before being incremented is the recording stop address i, that is, the incremented address is i+1 (step 305).

If the result of the check is No (step 305-N), then whether or not up to address n has been recorded.

That is, it is checked whether the incremented address is n+1 (step 306).

If the check result is No (step 306-N), the process returns to step 303; if the check result is YES (step 306-Y), the address is returned to the first address 41, and the process returns to step 303.

Repeat the above.

If the result of the check in step 305 is YES (step 305-Y), the control circuit 11 instructs the digital audio processing circuit 31 to cancel the recording mode (step 3
08).

Next, switch A32 and switch B34 are set to mode 2 via control line 104 (step 309).
, the bus 102 is connected to the bus 103, and the data line 106 is connected to the data line 109, respectively. After step 360, the process advances to the next broadcast station recording (step 400) in FIG.

FIG. 8 shows a detailed example of the broadcasting station name recording operation in step 400 in FIG.

In step 401, the control circuit 11 reads the channel selection information 28 from the channel selection control circuit 7, identifies which one is fl, f, ... fx, and stores it. The address is controlled by the address bus 110, and the corresponding broadcasting station name is searched by the data sequentially output to the data line 111 (step 402), that is,
The control circuit 11 reads the data in the area 51 in FIG. 5 from the data on the data line 111, and compares it with the data based on the previously stored channel selection information. fl when the comparison matches,
The broadcasting station name corresponding to any one of f2...fx becomes the data to be sought.

Next, the address of the station name data file 13 corresponding to the broadcasting station name to be recorded in the audio data memory 33 is designated (step 403), and the address of the audio data memory 33 is designated. In other words, i+1 in Figure 4 is the bus 103,1
02 to set it in the audio data memory 33.Step 4
04) At the same time, a write signal is supplied to record the station name data in the audio data memory (step 405).

Next, increment the address (step 406)
. Whether recording has been completed up to address j of the audio data memory 33, that is, the incremented address is j+
It is checked whether it is 1 (step 407).

If the check result is No (step 407-N),
Return to step 405 and repeat the above.

If the check result is YES (step 407-y)
, stops recording the data of the station name data file 13 in the audio data memory 33 (step 408).

Further, the control circuit 11 inputs the address of the audio data memory 33 via the buses 103 and 102 to the address i shown in FIG.
+1 (step 407).

The process returns to step 150 via step 460 and waits for clearing or playback control (step 150.55).
0).

FIG. 9 shows a detailed example of the playback operation in step 600 in FIG. 6.

At step 601, switch A32 in FIG. 3 is set to mode 1. Then, the digital audio processing circuit 31 is instructed to specify the start address i+1 (see FIG. 4) of the playback area of the audio data memory 33 (step 602), to set the playback mode (step 603), and to control the start of playback (step 604). ), digital audio processing circuit 31
controls the audio data memory 33, reads the audio data output to the data line 105, synthesizes an audio signal, and reproduces the audio by the amplifier 36 and speaker 37 (step 605).

On the other hand, the control circuit 11 monitors the address for the audio data memory 33 via the bus 101, and increments and specifies the address to the digital audio processing circuit 31 at a predetermined timing (step 606). In other words, in Figure 4,
It is checked whether reproduction has been completed once from address i+1 to address i (step 607).

If the result of the check is NO, the process returns to step 605 and the above steps are repeated.

If the check result is YES, the digital audio processing circuit 3
1 to stop the playback (step 608) and cancel the playback mode (step 609). Then, through step 660, return to step 150 and clear (
150) or waits for playback (550) control.

As described above, the above configuration is configured to record broadcasts before the time when the storage recording signal is input, so it is possible to completely store and record the desired broadcast from the beginning, and also to record a small amount of the broadcast. Since previous broadcasts can also be recorded, the context of the recorded content becomes clear, which is effective when editing onto tape or the like.

In addition, with the above configuration, when recording radio audio, it is possible to automatically record the radio audio and audio information indicating the broadcasting station as a pair, so there is no need to input microphone audio as in the past, and the operation is time-consuming. Audio information indicating a broadcasting station can be recorded extremely easily without having to worry about broadcasting stations. Therefore, it is very effective as an index when reproducing recorded contents, and is also effective when editing recordings.

<Effects of the Invention> As explained above, the present invention provides a means for receiving broadcast waves, a means for endlessly recording the received information, and a means for inputting a signal for switching the endless recording to a storage record. and a means for controlling the recording means so as to stop recording at a position a predetermined length before the position at which the signal is input, so that the desired broadcast can be recorded at the beginning of the position. It is possible to keep a complete record of it. Furthermore, since broadcasts prior to the desired broadcast can be recorded, there is an effect that the context of the recorded contents can be clarified.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of the present invention, FIG. 2 is a block diagram showing details thereof, FIG. 3 is a block diagram showing details of an audio recording circuit, a control circuit, and a station name data file, and FIG.
The figure is a data structure diagram showing an example of the data structure in the audio data memory, FIG. 5 is a data structure diagram showing an example of the data structure of the station name data file, and FIGS. 6 to 9 are flowcharts for explaining operations. It is. 1a: recording device, 1b=control device, IC: input device, 2
: Tuning control circuit, 3: Antenna, 4: Tuner, 5: I
F/detection circuit, 6: audio amplifier. 7: Speaker, 11: Control circuit, 12: Audio recording circuit,
13: Station name data file, 14: Switch, 21: Low-pass filter, 22: Programmable divider, 23
: Phase comparator, 24: Frequency divider. 25: Reference signal generator, 26 Two station selection switch, 31: Digital audio processing circuit, 32 and 34=switch, 33: Audio data memory.

Claims (1)

[Scope of Claims] Means for receiving broadcast radio waves, means for endlessly recording the received information, means for inputting a signal for switching the endless recording to a storage record, and a means for receiving the signal by the signal. a means for controlling the recording means so as to stop recording at a position a predetermined length before a position at which the sound is input.