JPS5853038A - Tape recorder - Google Patents

Abstract

PURPOSE:To attain continuous reproduction through alternate repetition of the reproduction and rewinding of the 1st and 2nd mechanism tapes, by logical control using an electronic control mechanism. CONSTITUTION:At the tape end state of the 1st mechanism, a trigger pulse from a one-shot multivibrator 503 and a control output of a play plunger 302 are inputted to a REW terminal of a control IC 500 and a PLAY terminal of a control IC 600 of the 2nd mechanism. Thus, the 1st mechanism goes to the rewinding state and the 2nd mechanism goes to the play state. At the tape end state of the 1st mechanism, the 1st mechanism is stopped with the trigger pulse and the control output of the rewind plunger 301. Next, the 2nd mechanism goes to the tape end during the playing, both the mechanisms change the state as mentioned before and repeat similar operation.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a logic control circuit that makes it possible, in a tape recorder having several mechanisms, to alternately and continuously reproduce tapes set in the respective mechanisms.

In a tape recorder equipped with two mechanisms,
To play two tapes in succession, each tape is attached to a mechanism, and one mechanism is locked in a paused state.

Then play the other mechanic to begin playback. Next, the tape of lJ/I, 1 is automatically stopped at the tape end, and at the same time, the pause state of the mechanism on the opposite side of 1 is released, and the reproduction of the second tape is started. When the second tape ends, it auto-stops and both mechanisms stop.

An example of a circuit for continuous reproduction is shown in FIG. 181.

The $1 mechanism 100 I/C is equipped with a tape end detection circuit 101, and the output of the tape end detection circuit 101 is a one-seat multilayer 102 and a resistor 10.
3, a transistor 1040 for driving the plunger.
Connected to Pace. The emitter of the transistor 104 is grounded, and the collector is connected to a pause release solenoid provided in the twentieth mechanism 200.

Select the tape you want to listen to first in continuous playback using the first mechanism 1.
00 to 1. Select the tape you want to listen to later using the second mechanism 20.
After installing 0K, the second mechanism 200 is set to the pause state, and then the Wll mechanism 100 is set to play. When the tape end detection circuit 101 detects the tape end, the first mechanism 100 is stopped and at the same time, the one-shot multi-function 102 outputs a two-tape end detection signal. In addition, One Shit Multi 10
2 is converted into a trigger pulse and inputted to the base of the transistor 104 via the resistor 103. When a trigger pulse is applied to the base, the transistor 104 is turned on and the pause release plunger 201 is operated. Therefore, the second mechanism 200 allows for continuous playback.

However, with the circuit pressure shown in Figure 1, the pause locked by the mechanism is released and the second mechanism is regenerated, so even though continuous regeneration is possible, the first Mechanism 100 and second mechanism 2
The disadvantage was that it was not possible to repeatedly and continuously reproduce 00 alternately.

SUMMARY OF THE INVENTION An object of the present invention is to provide a tape recorder capable of repeatedly and continuously reproducing the L, first tape and the $2 tape alternately, without the drawbacks of the prior art described above.

To achieve this objective, the present invention is characterized by the use of an electronic control mechanism and logic control.

Hereinafter, one embodiment of the present invention will be described using diagram #g2.

In Figure 2, 300 represents the first mechanism, and 400 represents the first mechanism.
shows the second mechanism, 301 and 401 are rewind plunger drive circuits, 302 and 402i
Ports 500 and 60 showing the plunger drive circuit for li play
0 are control ICs (for example, EA12001, etc.) for the first mechanism and the second mechanism, respectively, and the outputs of the tape end detection circuit 504 of the first mechanism and the tape end detection circuit 604 of the second mechanism are as follows. Each one has 50 hits! i, does
K are connected and further their outputs are NANI) 5
Control-c 500.6001c is input via 01, 502, 601, 602.

When the tape of the first mechanism 500 reaches the tape end, the tape end detection circuit 504 outputs a tape end detection signal, which is further converted into a trigger pulse signal by the one-shot strike multi 503. 1s2 mechanism 400
Similarly, when the tape end detection circuit 604 stops at the tape end, the signal from the tape end detection circuit 604 is converted into a trigger pulse by the one-shot multi 605.

Now, when the first mechanism reaches the end of the tape during play, it connects the trigger pulse from the one-shot hit multi 503 and the control output of the play plunger 302 to NA.
Through the ND gate 502, the control it so
Input to the ff terminal of o and the PLI terminal of control it 600. Therefore, the first mechanism is to rewind, t! Become g2's Mechani X Mu Jd 7' Ray. When the first mechanism reaches the tape end, the trigger pulse and the control output of the rewind plunger 501 are input to the controller A/*c 5000srop terminal via the NAND cable 501, so the first mechanism is strafusle. Next, when the second mechanism reaches the end of the tape during play, the One Shot Multi 6
The trigger pulse from 05 and the control output of the play plunger 402 are input to the PLI terminal of the control 1c5D and the RW terminal of the control it 600 via the HAND gate 602. So the first mechanic would be Play 4C% and the second mechanic would be Rewind. When the second mechanism reaches the end of the tape, the trigger pulse and the control output of the rewind plunger 4 (11) are input to the 5rop terminal of the control 1c600 via the NAND gate 6o1t-, so the second mechanism stops.

By repeating the above operations, the first mechanism and the second mechanism alternately enter play at the end of the tape, and when one mechanism is in the play state, the tape on the opposite side is rewound. , can be played repeatedly and continuously.

As explained above, according to the present invention, the user does not have to go through the trouble of rewinding the tape, but simply starts play on either the first mechanism or the second mechanism, and then automatically starts playing the first mechanism. The tape and the second tape are played back alternately, and while one tape is being played back, the tape on the opposite side is rewound, allowing for repeated continuous playback. In addition, unlike conventional devices, there is no distinction between the side that plays first and the side that plays later, and continuous playback can be started from either side.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a conventional device, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. 300...First mechanism 400...Second mechanism 500...First mechanism control month number C60
0...Second mechanism control 1c501.
502.601.602...NAND gate 5"O5
, 603...Wanshi Sotto Multi 504...Tape end detection circuit of the first mechanism 604...Tape end detection circuit of the second mechanism Patent attorney Usui 1) Toshiyuki Figure 1 Figure 2

Claims (1)

[Claims] In a tape recorder having a plurality of mechanisms for reproducing magnetic tape, means for controlling a first mechanism, means for detecting a tape end of the first mechanism, means for controlling a second mechanism, and @2 means for detecting a tape end of the mechanism, and a detection signal from the first or second tape end detecting means, controlling the first mechanism and the second mechanism to alternately repeat playback and rewinding. 1. A tape recorder comprising means for repeatedly and continuously reproducing tapes loaded in each of the first mechanism and the second mechanism.