JPH03280235A - Cassette auto-changer - Google Patents

Abstract

PURPOSE:To prevent misrecording of the timer recording by deciding whether the desired timer recording is feasible or not as to the kind of a cassette and a miserasing preventing claw, etc., when the timer recording is set. CONSTITUTION:The subject device is a cassette auto-changer for housing plural cassettes, selecting a prescribed cassette and driving this cassette, and is equipped with a mode input switch 1, a cassette inserting detectors 3a and 3b, a cassette kind detector 5, miserasing preventing claw detector 7, a tape counter 9, a CPU 11 and others. When the desired timer recording is set, whether the kind of a cassette in a tape driving position is an S-VHS cassette or a normal cassette is decided by the cassette kind detecting switch 5, and moreover the presence of the miserasing preventing claw of the cassette is detected by the miserasing preventing claw detector 7. Then, whether the timer recording can securely be performed on the cassette to be recorded is decided, and its deciding result is displayed at a display 25, so that a misoperation of the timer recording can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a cassette autochanger that is used in a magnetic recording/reproducing device such as a VTR and is capable of storing a plurality of cassettes.

(Prior Art) Conventionally, some VTR devices are equipped with an autochanger that can store a plurality of cassettes.

(Problems to be Solved by the Invention) When performing timer recording in such an apparatus, detection of the type of cassette, detection of a claw for preventing erroneous erasure, detection of remaining amount of tape, etc. are not performed. Therefore, if the wrong type of cassette is set, if the cassette's accidental erasure prevention claw is broken, if timer recording is not possible, or if there is not enough tape remaining, you may not be able to record for the set amount of time. There was something I couldn't do.

The present invention has been made in view of these problems, and its purpose is to provide a cassette autochanger that can prevent timer recording mistakes.

[Structure of the Invention] (Means for Solving the Problem) In order to achieve the above-mentioned object, the present invention is a cassette autochanger that stores a plurality of cassettes, selects a predetermined cassette, and drives it. , a means for setting a desired timer recording, a determining means for determining whether or not the cassette can perform the desired timer recording when the timer recording is set, and a display means for displaying the determination result. This is a cassette autochanger.

(Function) In the present invention, when timer recording is set, it is determined whether or not the cassette can perform the desired timer recording, so recording errors in timer recording can be prevented.

(Example) Hereinafter, an example of the present invention will be described in detail based on the drawings.

FIG. 1 is a block diagram showing the configuration of a cassette autochanger according to an embodiment of the present invention, and FIG. 2 is a schematic diagram of the main parts of this cassette autochanger.

The cassette autochanger has mode input switch 1,
Cassette insertion detector 3 a 13 b s cassette type detector 5, accidental erasure prevention claw detector 7, tape counter 9,
Central processing unit (CPU) 11, ROM13, RAM15
, a mode motor driver 17, a mode motor 19, a reel motor driver 21, a reel motor 23, and a display 25.

The mode input switch 1 is a switch for inputting modes such as recording, playback, and fast forwarding.

The cassette insertion detector 3a detects when the first cassette 41 is inserted into the first cassette insertion position A.

The cassette insertion detector 3b detects when the second cassette 43 is inserted into the second cassette insertion position E.

The cassette type detection switch 5 detects the type of cassette located at the tape drive position C, and determines whether it is a 5-VHS cassette or a normal cassette.

The accidental erasure prevention claw detector 7 detects the presence or absence of an accidental erasure prevention claw on the cassette.

The tape counter 9 counts the amount of tape being fed.

The CPU II controls the operation of each part.

Mode motor driver 17 is a drive circuit for mode motor 19.

The mode motor 19 is a motor that moves the cassette.

The reel motor driver 21 is a drive circuit for the reel motor 23.

The reel motor 23 feeds the tape in the cassette located at the tape drive position C.

The display 25 displays the determination results.

As shown in Figure 2, there is a first
A door 27 and a second door 29 are provided, the first cassette 41 is inserted through the first door 27, and the second cassette 43 is inserted through the second door 29.

The main base 31 has a reel stand 35 and a boss 37.39
Furthermore, the above-mentioned cassette type detector 5 and erroneous erasure prevention claw detector 7 are provided.

Reference numeral 33 is a cylinder for reading and writing from and to the tape.

Next, the operation of this cassette autochanger will be explained.

3 and 4 are flowcharts showing the operation of the cassette autochanger, and FIGS. 5 to 11 are diagrams schematically depicting the movement of the cassette.

When the first cassette 41 is inserted (FIG. 6) with no cassette inserted (FIG. 5), the CPU 1 learns from the cassette insertion detector 3a that the first cassette 41 has been inserted; The mode motor 19 is driven to send the first cassette 41 to the tape drive position C (FIG. 7).

The CPU 1 monitors the input of the timer recording mode (step 301), and when the timer recording mode is input from the mode input device 1, it checks the set times such as the recording start time and recording time (step 302). ), the set time is stored in the RAM 15.

Since the CPU 1 knows that the first cassette is inserted from the signal sent from the cassette insertion detector 3a (step 303), it performs a process to determine the first cassette 41 located at the tape drive position C (step 303). Step 304
).

FIG. 4 is a flowchart showing this discrimination process,
The CPU II determines the type of cassette using the cassette type detector 5 (step 401).

The CPU II determines whether or not the cassette has an accidental erasure prevention claw using the accidental erasure prevention claw detector 7 (step 40).
2). If there is an accidental erasure prevention claw, use the tape counter 9.
The current tape position data sent from the tape is read and stored in the RAM 15 (step 403).

Next, the CPU II drives the reel motor 23 (step 404), counts reel pulses (step 405), and calculates the remaining amount of tape (step 406).
. The calculated remaining amount of tape is compared with the set time stored in the RAM 15, and it is determined whether the set time exceeds the remaining amount of tape. Incidentally, when the discrimination is completed, the tape is returned to its original position by the reel motor 23.

Next, when the second cassette 43 is inserted (FIG. 8), the CP is detected by the signal sent from the cassette insertion detector 3b.
The UI 1 learns that the second cassette 43 has been inserted (step 305), and drives the mode motor 19 to insert the second cassette 43.
Feed the cassette 43 to the second cassette standby position G (9th
), the first cassette 41 in the tape drive position C is
After moving to the cassette switching position B, move it to the first cassette standby position (step 306, Fig. 10)
.

Next, the second cassette 43 in the second cassette standby position G
is moved to the second cassette switching position F, and then moved to the tape drive position C (step 307, FIG. 11).
, performs determination processing (step 308). This determination process is similar to that described above.

Next, the CPU 11 moves the second cassette 43 located at the tape drive position C to the second cassette standby position G (step 309), and moves the first cassette 41 located at the first cassette standby position to the tape drive position C. Move (step 310).

The CPU 1 displays the determination result on the display 25 (step 311). That is, the type of the first cassette, whether or not the first cassette has an erroneous erasure prevention claw, and whether the remaining amount of tape in the first cassette exceeds the set time are displayed.

Furthermore, if the second cassette is inserted, a similar display is made for the second cassette as well.

Then, the CPll returns to the mode (step 31
2).

Thus, according to this embodiment, when inputting the timer recording mode, it is determined whether the cassette to be recorded will reliably perform timer recording, and the determination result is displayed, thereby preventing timer recording mistakes. be able to.

FIG. 12 shows another embodiment of the present invention, in which the cassette type and the accidental erasure prevention claw are detected at the first cassette standby position and the second cassette standby position G. It is something.

That is, a switch mounting table 45 is provided below the first cassette standby position so as to be movable up and down. When the cassette is moved to the first cassette standby position, the type of cassette and the erroneous erasure prevention claw can be detected.

In addition, the switch mounting table 47 is provided below the second cassette standby position G, which has a cassette type detector 5b and an accidental erasure prevention claw detector 7b, so that it can be moved up and down. Perform detection.

[Effects of the Invention] As described in detail above, according to the present invention, it is possible to provide a cassette autochanger that can prevent timer recording mistakes.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a cassette autochanger according to an embodiment of the present invention, FIG. 2 is a schematic diagram of this cassette autochanger, and FIGS. 3 and 4 are:
A flowchart showing the operation of the cassette autochanger, FIGS. 5 to 11 are diagrams showing the movement of the cassette, and FIG. 12 is a schematic diagram of the cassette autochanger according to the second embodiment. 1...Mode input switch 3a, 3b.
...Cassette insertion detector 5.5a, 5b...Cassette type detector 7.7a, 7
b... Accidental erasure prevention claw detector 9...Tape counter 1...CPU 9...Mode motor 3... ...Reel motor 5...Display

Claims (3)

[Claims] (1) A cassette autochanger that stores a plurality of cassettes and selects and drives a predetermined cassette, comprising means for setting a desired timer recording, and when the timer recording is set, the cassette is A cassette autochanger comprising: determining means for determining whether or not desired timer recording can be performed; and display means for displaying the determination result. (2) The cassette autochanger according to claim 1, wherein the determining means determines the type of cassette. (3) The cassette autochanger according to claim 1, wherein the determining means detects an accidental erasure prevention tab on the cassette. (4) Claim 1, wherein the determining means compares the remaining amount of tape with a set recording time.
Cassette autochanger as described in section.