JPS5853417B2 - Automatic repeat playback device for tape recorder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic repeat playback device for a tape recorder, which stores a pulse count signal taken out as the tape runs at two arbitrary points in time, and combines the memorized signal and the pulse count signal. To provide an automatic repeat playback device capable of freely and automatically repeating a desired repeat section by simple operation without using a sensing group or the like by playing and rewinding when the purpose.

Conventionally, when a desired song out of a plurality of songs recorded on a magnetic tape is repeatedly played in an open tape recorder or the like, a tape counter is reset to 1-000J at the beginning of the desired song, and the tape counter is reset to 1-000J at the beginning of the desired song. A sensing group is attached to the end of the tape counter, and the tape counter changes from rewind to play mode in conjunction with the operation when it displays l'-999J, and by detecting the sensing group at the end, it changes from play to rewind mode and reverse. mode, the start and end parts of the song you want to repeat (
There have been methods such as pasting sensing foils on each, detecting the sensing group at the end part in the play mode to set the reverse mode, and detecting the sensing group at the start part in the reverse mode to set the play mode.

However, according to these methods, the sensing group must be attached or peeled off to the corresponding part each time depending on the desired song to be repeated, which makes the operation cumbersome, does not allow quick operation, and does not allow for flexibility. However, there were drawbacks such as the inability to select a desired repeat section.

Furthermore, in the case of a cassette tape recorder, sensing groups cannot be freely attached to or peeled off from the cassette tape, and the tape must be played until the end, and repeat sections cannot be freely selected. was there.

The present invention eliminates the above-mentioned drawbacks, and an embodiment thereof will be described below with reference to the drawings.

The figure shows a circuit diagram of an embodiment of an automatic IJ repeat playback device for a tape recorder according to the present invention.

In the figure, the repeat switch S is closed and the - input terminals of AND circuits 11a and 11b are set to H level.

When a magnetic tape is reproduced, a number of pulse signals corresponding to the number of rotations of the reel shaft are extracted by the disk magnet 1 and Hall elements 2a and 2b, which rotate integrally with the reel shaft (not shown), and are sent to the flip-flop 3. At the same time, the signal from the Hall element 2a is supplied to the counter 4.

A signal corresponding to the rotational direction of the disk magnet 1 is taken out from the flip-flop 3, and when the tape is traveling in the play direction, the counter 4 outputs a pulse number corresponding to the number of rotations of the disk magnet 1, that is, the tape running distance. This addition signal is the first
Memory circuit 5a, second memory circuit 5b1 count signal-
It is supplied to several sheet output circuits 6a and 6b.

Here, among the plurality of songs recorded on the tape, for example, the second
When repeating the song and the third song, the non-locking play button 7 is pressed between the end point of the first song and the start point of the second song while playing the tape.

As a result, the - input terminal of the memory circuit 5a is grounded, and the count signal from the counter 4 (that is, the signal corresponding to the repeat start position between the first and second songs)
is stored in the memory circuit 5a.

The memorized signal is supplied to a count signal/number output circuit 6a.

On the other hand, by operating the play button 7, a set signal is supplied to the play drive circuit 8, the play drive circuit 8 is kept in the set state, and the tape recorder is kept in the play state.

Next, the non-locking rewind button 9 is pressed between the end point of the third song and the start point of the fourth song.

Therefore, the - input terminal of the memory circuit 5b is grounded, and the count signal from the counter 4 (that is, the signal corresponding to the repeat end position between the third and fourth songs) is sent to the memory circuit 5b. be done.

The memorized signal is supplied to a count signal/number output circuit 6b.

On the other hand, when the rewind button 9 is operated, a set signal is supplied to the rewind drive circuit 10, the rewind drive circuit 10 is activated, and the tape recorder changes from the play mode to the rewind mode.

By rewinding, the disk magnet 1 rotates in the opposite direction to that in the play mode, and as a result, a subtraction signal is taken out from the flip-flop 3, and the counter 4 calculates the number of pulses corresponding to the rotation speed of the disk magnet 1. This subtraction signal is a count signal-number output circuit 5a.

6b.

Here, the count signal from the counter 4 is transmitted to the memory circuit 5.
When the signal matches the count signal corresponding to the repeat start position stored in a, the detection circuit 6a picks up the match signal and supplies it to the AND circuit 11a.

From this point, an H level signal is taken out from the AND circuit 11a and supplied to the play drive circuit 8, and the tape recorder changes from the rewind mode to the play mode.

The second and third songs are played in the play mode, and when the third song finishes playing, the count signal from the counter 4 matches the count signal corresponding to the repeat end position stored in the memory circuit 5bI. , a coincidence signal is taken out from the detection circuit 6b and supplied to the AND circuit 11b.

As a result, an H level signal is taken out from the AND circuit 11b and supplied to the rewind drive circuit 10, and the tape recorder changes from the play mode to the rewind mode.

By repeating the above operations, the second and third songs can be automatically repeatedly played back.

To change the song to be played repeatedly, press the play button 7 and rewind button 9 at the start and end points of the desired song while playing the tape in the same manner as above, and the memory circuits 5a, 5b# will be pressed. The previous count signal stored in memory is erased, a new count signal is stored, and the same operation as described above is performed to repeatedly reproduce the signal.

As described above, the automatic repeat playback device for a tape recorder according to the present invention includes a circuit that extracts a pulse signal according to the tape running, a circuit that adds the pulse signal according to the tape running direction,
a counter for subtraction; a first memory circuit for storing a signal from the counter by a first operation while the tape is running;
A second memory circuit memorizes the signal from the counter by a second operation while the tape is running, and the tape is played by detecting a match between the signal from the counter and the signal stored in the first memory circuit. The circuit consists of a circuit for rewinding the tape by detecting a match between the signal from the counter and the signal stored in the second memory circuit, and a circuit for rewinding the tape from the time of the first operation with a simple button operation. The information recorded on the tape up to the point of the second operation can be automatically repeatedly reproduced. This eliminates the need for the troublesome operation of pasting a sensing group in the desired repeat section as in conventional open tape recorders. Furthermore, when changing the desired repeat section, it is only necessary to re-memorize the first and second memory circuits with a simple button operation. The present invention has the advantage that the desired repeat section can be freely changed without any troublesome operations, and furthermore, the operation can be performed more quickly than conventional ones.

BRIEF DESCRIPTION OF THE DRAWINGS The figure is a circuit diagram of an embodiment of an automatic repeat playback device for a tape recorder according to the present invention. 1...Disc magnet, 2a, 2b...Hall element, 3...Flip-flop, 4...
...Counter, 5a5b...Memory circuit, 6a
, 6b...Count signal-number output circuit, 7...
...Play button, 8...Play drive circuit, 9
...Rewind button, 10...Rewind drive circuit, 11a, llb...AND circuit, S...
...Repeat switch.

Claims (1)

[Claims] 1. A circuit that extracts a pulse signal according to the running direction of the magnetic tape, a counter that adds or subtracts the pulse signal according to the running direction of the magnetic tape, and a circuit that extracts the pulse signal according to the running direction of the magnetic tape, and a counter that extracts the pulse signal according to the running direction of the magnetic tape, and a first memory circuit that stores a signal from the counter by a second operation while the magnetic tape is running; a second memory circuit that stores a signal from the counter and the first a circuit that detects a match between the signal from the counter and the signal stored in the second memory circuit and causes the tape to play; and a circuit that detects a match between the signal from the counter and the signal stored in the second memory circuit. An automatic repeat playback device for a tape recorder, comprising a circuit for rewinding the tape.