JPH0234098B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for a tape recorder,
In particular, the present invention relates to a control device for a tape recorder equipped with a music selection search function.

In conventional control devices for tape recorders equipped with a song selection search function, when a search start command is supplied from the operation unit, a CUE operation (fast forward operation with the playback head in contact with the recording tape) is commanded. When the beginning of a song is detected, the play operation is performed for a predetermined period of time, and when a search cancellation command is supplied from the operation section, the search operation is stopped and the play operation is started.

Therefore, in a search operation, if a certain song starts to be played and you want to play that song from the beginning when it turns out to be the desired song, you must perform a separate cue operation and then perform a play operation. It was inconvenient to have to do it.

SUMMARY OF THE INVENTION An object of the present invention is to provide a control device for a tape recorder which, upon receiving a search cancellation command, returns the head to the beginning of the song and then issues a play operation command, thereby eliminating the inconveniences of the conventional example. .

In the tape recorder control device according to the present invention, a search operation is performed in response to a search start command, and when a search cancel command is supplied, the performance is started from the beginning of the immediately previous track (beginning of the track). .

Hereinafter, a tape recorder control device according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a circuit diagram showing an example of a tape recorder control device according to the present invention constructed using a microprocessor. In this figure, an operation unit 1 supplies an operation command to an input/output interface circuit 2 according to the operation content of an operation button (not shown). Also, a playback signal corresponding to the signal recorded on the tape is obtained from the playback head 3 during a queue operation or a review (REV) operation (a rewinding operation with the head in contact with the tape), and is sent to the buffer amplifier 4. The amplified signal is then supplied to the inter-track detection circuit 5. When a non-recorded portion of the tape continues for a predetermined period of time or more, the song interval detection circuit 5 determines that it is a song interval and supplies a song interval detection signal to the input/output interface circuit 2. On the other hand, a central processing unit (CPU) 6 cooperates with a read/write memory 7 and a read-only memory 8 to control the input/output interface circuit 2.
In response to the motion commands and the inter-musical detection signals obtained from the control circuit 1, a judgment process as shown in the flowchart of FIG. The mechanism control unit 9 controls each mechanism (not shown) to perform a desired operation according to the supplied operation command.

The operation of the tape recorder control device according to the present invention shown in FIG. 1 will be explained with reference to the flowchart shown in FIG. That is, when a search start command is issued from the operation unit 1 (step 20),
The control device first issues a cue operation command (step 21). When a recording signal is detected through the head 3 by the queue operation and an inter-track detection signal is issued from the inter-track detection circuit 5, the beginning of the track is determined (step 22), and a play command is issued (step 23). ).
At this time, it is determined whether or not a search cancellation command has been issued (step 24), and unless a search cancellation command has been issued, the play operation is continued until the play time reaches a predetermined time (step 25);
When the play time reaches a predetermined time, a cue command is issued again to begin the next song selection operation.

Next, if a search cancellation command is supplied during the cue operation and before the inter-track detection (step 26),
It is determined whether the beginning of the first song has already been played (step 27), and if the beginning of the first song has already been played, a review command is issued (step 28). When the review operation is performed and the beginning of the song is detected (step 29), the play operation is commanded (step 29).
30) and complete the series of operations. Note that if the search cancel command is supplied immediately after the search start command, that is, if the beginning of the first song has not been reproduced yet, the search operation continues as is.

Note that the search start command operation and the search cancellation operation of the operation section 1 may be performed using separate operation switches or a single operation section switch.

As is clear from the above, in the tape recorder control device according to the present invention, when a search operation is started in response to a search start command, the beginning of a desired song is played, and the operator performs a search cancellation operation. Since the system automatically performs a review operation, detects the beginning of the previous song, and starts playing from there, it is convenient because there is no need to perform a cue operation again after canceling the search.

Furthermore, although the above-described embodiment uses a microcomputer, it is obvious that it may be constructed using ordinary (so-called hardware) as long as it performs similar operations.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing a control device for a tape recorder according to the present invention, and FIG. 2 is a flowchart showing the operation of the device shown in FIG. Explanation of symbols of main parts, 1...Operation unit, 2...
Input/output interface circuit, 3... Playback head, 4... Buffer amplifier, 5... Song interval detection circuit, 9... Mechanism control section.

Claims (1)

[Claims] 1 In response to a search start command, the tape is fast-forwarded and each time the beginning of a song is detected, the play operation is repeated for a predetermined period of time until a search cancellation command is received. When the search cancellation command is received, a review operation is performed and the previous playback is performed. A control device for a tape recorder, characterized in that it performs a play operation by returning the head to the beginning of a song.