JPS5923272Y2 - Tape recorder performance programming device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a performance programming device for a tape recorder that uses the output of an automatic song interval detection device to play only preprogrammed songs.

Conventionally, when playing a desired song from a tape that has been pre-recorded with a tape recorder, the beginning of the desired song has to be manually retrieved and played back each time.

For this reason, it was a pain to have to go to the front of the deck and operate it every time the song ended.

Even when dubbing, it took a lot of time to choose the songs to dub.

The present invention eliminates the above-mentioned trouble and effort, and is a device that automatically plays only the songs you want to listen to.The main mechanical parts are shown in Figure 1. , the block diagram of the circuit is shown in FIG. 2, a plurality of sets 1 pass through a cylindrical case-like drum 2, and the front portions of each set pin 1 are arranged at equal intervals on the circumference of the drum 2 surface. As shown in Figure 3, the middle part is locked by a locking mechanism in three positions: the position when pulled inside the drum 2 (for fast forwarding), the intermediate position (for play), and the position when pushed in (starting point, ending point). Three notches 27 are provided so that the magnet 3 is fixed to the outside of the rear end.

A detection device such as a reed switch 4 for play and a detection device such as a reed switch 5 for fast forwarding that is sensitive to the magnet 3 that comes close to the rotation of the drum 2 is provided on an insulating plate attached to a mounting bracket, and the set pin 1 is located at the insulating plate position. When it turned to
As shown in Figure 5, the set pin 1 force bow 1 tension position (
When the set pin 1 is in the intermediate position, the magnet 3 responds to the fast-forward reed switch 5 and oscillates the operation switch control signal 28 through the operation switch control circuit 23. When the set pin 1 is in the intermediate position, the magnet 3 is activated. reed switch 4
In response to this, an operation switch control signal 28 is transmitted through the operation switch control circuit 23, and each reed switch is connected to the motor drive circuit 22 through the operation switch control circuit 23.

When the set pin 1 is in the pushed-in position (left side), the light is blocked by the magnet 3 of the pushed-in set pin 1, and the detection device such as the phototransistor 7 is used as the starting point. Two sets are provided, one for the end point, and the start point detection signal circuit 19 and the end point detection signal circuit 20 each have a Schmitt circuit and a differentiation circuit in their circuits, and each detection signal is connected to the motor drive circuit 22 through a flip-flop circuit 21.

A disc-shaped lock plate 8 is connected to the rotating shaft of a drive motor 9 that rotates the drum 2, a plurality of recessed parts 10 are provided around the outer periphery of the lock plate 8, and the tip enters and exits into the recessed parts 10. Attach the lock arm 11 to the armature part of the relay coil 13,
A contact section 12 for starting and stopping the drive motor 9 is attached to the lower part of the relay coil 13, and when the distal end engagement section of the lock arm 11 fits into the recessed notch 10, the relay coil 13 turns off the contact section 12. , turn off the motor 9 circuit.

The relay coil 13 is actuated by a drive pulse generation circuit 26 generated by a signal from a differentiation circuit 25 having a song interval detection device 24 and a start switch 18, and separates the distal end engagement portion of the lock arm 11 from the recessed portion 10, Contact part 1
Turn on 2 and turn on motor 9 circuit.

This is a performance programming device in which a differentiation circuit 25 and a flip-flop circuit 21 are connected to the starting point side.

The present invention has the above-mentioned configuration, and the set pin 1
sequentially from the starting point (the position you pushed it in), and the position where you pulled out each track (the position you pushed it in).
(Fast forward) or intermediate position (Play), and program the performance in the order of the end point (position pressed).

For example, as shown in Fig. 4, the starting point is 16, the first, second, and fourth songs are played 14, the third song is fast forwarded 15, and the ending point is 17.
and turn on the start switch 18.
A starting point phototransistor and a light emitting diode are installed at the position of point A, and are blocked by the magnet 3, and a starting point detection signal circuit 19 and a start trigger differentiation circuit 25,
Motor drive circuit 2 through flip-flop circuit 21
2 and oriented counterclockwise, the drive motor 9 rotates the drum 2 counterclockwise.

The drum rotates counterclockwise and sets pin 1 for the first song.
comes to point A, and the first song is played.

At the end of the first song, an inter-song pulse is generated, the device rotates one pitch further counterclockwise, and the second song is played.

In the third song, the set pin 1 is in the pulled out position and is fast-forwarded.

Thereafter, the fourth song is played in the same way, and at the inter-song pulse at the end of the fourth song, an end point phototransistor and a light emitting diode are installed at the position of the first song in FIG. The circuit 20 rotates the drum 2 clockwise through the flip-flop circuit 21 and the motor drive circuit 22, and the drive motor 9 rotates the drum 2 clockwise and starts a rewind operation. Rotate in the opposite direction to return to the position before the start.

During fast forwarding, play, and repeat, the inter-song detection device 24 and the start trigger differential circuit 25 including the start switch 18 operate the electromagnetically operated relay coil 13 through the drive pulse generation circuit 26, and drive the electromagnetic operated relay coil 13 each time an inter-song detection is detected. The motor 9 is started, and the distal end engaging portion of the lock arm 11 is engaged with the recessed part 10 of the lock plate 8, and stops at each recessed part of the lock plate.

A drum 2 fixed coaxially with the lock plate is rotated, and a magnet 3 fixed to a set pin 1 of the drum 2 is rotated.

When the relay coil 13 is energized, the lock arm 11 is disengaged from the recessed part 10 of the lock plate 8, and the contact part 12 is turned on to drive the drive motor 9.

When no current is applied, the lock arm 11 is engaged with the groove bottom of the recessed part 10 of the lock plate 8, and the contact part 12 is turned off to stop the drive motor 9.

As mentioned above, this invention relates to a mechanism that automatically plays a cassette tape by programming the set pin to play on a tape recorder. Repeat play is also possible, and when dubbing, the program can be programmed. If you keep it in place, dubbing will be possible automatically, which is a useful idea.

[Brief explanation of drawings]

Figure 1 is a perspective view of the main mechanism of the present invention, Figure 2 is a circuit block diagram of the present invention, Figure 3 is an internal sectional view of the drum 2, and Figure 4 is a sectional view of the inside of the drum 2.
The figure is a hypothetical diagram of the surface of the drum 2, and FIG. 5 is a diagram of the positional relationship of the magnetic screws 13. 1 is set pin, 2 is drum, 3 is magnet, 4.5
is a reed switch, 6 is a light emitting diode, 7 is a phototransistor, 8 is a lock plate, 9 is a drive motor, 10 is a recessed part, 11 is a lock arm, 12 is a contact part, 13 is a relay coil, 14 is a play, 15 is a Fast forward, 16 is the starting point,
17 is an end point, 18 is a start switch, 19 is a start point detection signal circuit, 20 is an end point detection signal circuit, 21 is a flip-flop circuit, 22 is a motor drive circuit, 23 is an operation switch control circuit, 24 is a song interval detection device, and 25 is a Differential circuit, 2
6 is a drive pulse generation circuit, 27 is a cut, and 28 is an operation switch control signal.

Claims (1)

[Scope of utility model registration request] By fitting the tip engaging portion into the recessed notch 10 provided on the outer periphery of the lock plate 8 rotated by the drive motor 9,
A lock arm 11 is attached to which the relay coil 13 turns off the motor 9 circuit, and a magnet 3 is attached to the drum 2 coaxially attached to the lock plate 8 to drive detection devices such as reed switches 4 and 5 that control play and fast forwarding. This is a performance programming device for a tape recorder in which a plurality of set pins 1 each having a click stop notch 27 are attached on the same circumference.