JPS6013610B2 - Mode selection switching device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mode selection switching device, and an object of the present invention is to provide a mode selection switching device that can selectively switch to a different mode depending on the operation of the operating means.

-The operation panel of the Taishi tape recorder, etc. has play,
There are several different modes such as first forward, rewind, reverse, stop, recording, and pause, each with an operating sword.

For this reason, the conventional type requires a large space on the operation panel, requires a large number of operation buttons, cannot be made compact, cannot be simplified on the operation panel, and cannot be constructed at low cost. There were drawbacks such as. The present invention eliminates the above-mentioned drawbacks, and embodiments thereof will be described below with reference to the drawings.

FIG. 1 shows a circuit diagram of an embodiment of the mode selection switch device according to the present invention. In the figure, numeral 1 is a non-locking play/fast forward button, 2 is a non-locking plow for both reverse and rewind, which are connected to monostable multipipetrators 4 and 3, respectively. 3 are connected to J-K flip-flops 5 and 6, the output of monostable multipipulator 4 is connected to J-K flip-flops 7 and 8, and J-K flip-flop 5 is connected to J-K flip-flop 5.
8 are connected to a play drive circuit 9, a first forward disturbance recovery circuit 10, a reverse drive circuit 11, and a rewind drive circuit 12, respectively. Now, when the monostable multipipulator 3.4 is in the inactive state, its outputs Q, Q
are at the L level and H level, respectively, so the inputs J and K of the J-K flip-flops 5 and 7 are at the low level and L level, respectively, and the inputs J and K of the J-K flip-flops 6 and 8 are at the L level and H level, respectively. It is in. When entering play mode,
When the peg 1 serving as both the play and first feedback is pressed at the time point ``to'', the potential at the point 2 becomes the L level as shown in FIG. 2A, and a differential pulse q as shown in the figure B is taken out at the point 2. This pulse q is supplied to the J-K flip-flop 5, and the output Q (point @) of the J-K flip-flop 5 reaches the daily level at the falling time t of the pulse q, as shown in FIG. The output Q (point ■) of the J-K flip-flop 5 is supplied to the play drive circuit 9, and the tape recorder enters the play mode at the time. On the other hand, J-K Fritz Flop 5
The output Q of is connected to the monostable multipipulator 3,
The output Q (■ point) of monostable multipipulator 3 is shown in figure D.
As shown in the figure, it becomes H level from time to time, and its output Q becomes L level.
For example, after a time constant of 1 second, the output Q becomes L.
level.

Note that the inputs J and K of the J-K flip-flop 6 are at time t.
Since they are at L level and H level at o, respectively, even if pulse q comes in, its output Q (point ■) remains at L level as shown in box E', and the first-ford drive circuit 10 It is in a stopped state. Note that when the output Q of the J-K flip-flop 6 is at the H level and the tape recorder is in the fast forward mode, the output Q of the monostable multipipulator 3 is at the L level, so the input J of the J-K flip-flop 6 is , K are at the L level and H level, respectively, and the output Q becomes the L level by operating the play/first forward nail 1, so that the tape recorder immediately shifts from the fast forward mode to the play mode. On the other hand, by operating the play/first forward combination fishing 1, the J-K flip-flops 7, 8
The reset terminal R of the transistor becomes H level, and the JK flip-flops 7 and 8 are reset.

As a result, if the reverse drive circuit 11 or the rewind drive circuit 12 is in an operating state, the tape recorder immediately shifts from the IJ birth mode or the rewind mode to the play mode. next,
To enter the fast forward mode, press the play/fast forward nail 1 twice in succession at time t3 and at time t3 with an interval of less than 1 second, the time constant of the monostable multipipelator 3, to change the potential at point @. becomes L level as shown in FIG. 2A, and as a result, the differential pulse b is applied to point
2, b3 is extracted.

Since the output Q of the monostable multipipulator 3 is at L level and the output Q is at H level, the first pulse Q causes J-
K flip-flop 5 (input J is H level, input K is L level)
The output Q (point @) of the monostable multipipulator 3 becomes H level as shown in C in the same figure, and the play drive circuit 9 is activated to enter the play mode.
Point (■) becomes H level as shown in the storm diagram D, its output Q becomes L level, inputs J and K of J-K flip-flop 5 are L level and H level respectively, and input of J-K flip-flop 6. J and K will be at day level and L level respectively.
Note that at time t2, the input J of the J-K flip-flop 6 is at the L level and the input K is at the H level, so even when the first pulse b2 is input, the J-K flip-flop 6 remains at the L level, and the forward drive circuit 10 is in the non-operational state. In working condition. The second wide pulse causes the J-K flip-flop 5 (input J to go low).
The output Q of the J-K flip-flop 6 (the input K is the H level) goes to the L level as shown in Figure C, and the play drive circuit 9 stops, while the output Q of the J-K flip-flop 6 (the wide pulse is a monostable 3, the output Q (point ■) of the flip-flop 6 (input J at this point is at H level and input K is at L level) becomes H level as shown in FIG. The fast forward drive circuit 10 is activated and the tape recorder enters the fast forward mode.

In this way, if you press the play/fast forward button 1 once, you will get the play mode, and if you press it twice in succession, you will get the first forward mode, so you can select the two modes with one operation. Can be switched.

Similarly to the above case, when the reverse/rewind plow 2 is pressed once, the output of the J-K flip-flop 7 becomes H level, the reverse drive circuit 11 is activated, and the reverse/rewind plow 2 is pressed once.
When the rewind anchor 2 is pressed twice in succession, the output of the JK flip-flop 8 becomes H level and the rewind drive circuit 12 is activated.

At this time, the J-K IJ flip-flops 5 and 6 are brought into a reset state by operating the reverse/IJ wind function gate 2. Next, if you want to scrape from a certain operation mode to stop mode, press the play/first forward combination plow 01 and the IJ birth/rewind combination plow 2 at the same time.

As a result, each reset terminal R of the J-K flip-flops 5 to 8 becomes H level, and the J-K flip-flop 5
~8 are in a reset state and their respective outputs Q are at L level, and the play drive circuit 9, forward drive circuit 10, reverse drive circuit 11, and rewind drive circuit 12 are inactive, and the tape recorder is in stop mode. become.
Note that a pulse is not taken out at point ■ until the potential at point @ falls, so when separating nails 1 and 2, even if one of the buttons is left released, J- The K flip-flop is never activated and there is no transition to other modes. Note that the number of buttons is not limited to the above embodiment, and a plow for obtaining the stop mode may be provided independently.

Further, for example, the plow 1 for both play and first forward use is provided with two display parts la and lb as shown in FIG. It may be possible to light up.

As described above, the mode selection switching device according to the present invention includes a common mode selection operation means for each of at least two modes, and a circuit that outputs one pulse for each operation of the mode selection operation means. and a time constant circuit which takes out an output with a time width according to a preset time constant, whose output is connected to the input of the time constant circuit, whose input is connected to the output of the time constant circuit, and which outputs a time width output from the time constant circuit. When there is no output, when the above pulse is supplied, a control signal for selecting one of the above plurality of modes is taken out, while when there is an output from the above time constant circuit, when the above pulse is supplied, the first mode is canceled. A control circuit that takes out a control signal to output a control signal, and its input is connected to the output of the above-mentioned time constant circuit, and when there is an output from the above-mentioned time constant circuit, when the above-mentioned pulse is supplied, a mode different from the above-mentioned one mode is selected. Since the configuration consists of a control circuit that outputs a control signal, for example, when applied to a tape recorder, multiple modes such as play and fast forward can be selected and switched by simply operating a single operation button. This allows the number of operation buttons provided on the operation panel to be significantly reduced compared to conventional ones, making it more compact and easier to operate than conventional operation panels.
It also has features such as being able to be constructed at a lower cost.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram of an embodiment of the mode selection switching device according to the present invention, FIGS. 2 A to E are signal waveform diagrams for explaining the operation of the circuit shown in FIG. 1, and FIGS. 3 A and B are - It is a diagram for explaining the display state of the first forward wholesaler. 1...Play/first reward button, 2...
・Reverse/rewind combination plow, 3, 4... Monostable multipipulator, 5-6... J-K flip-flop, 9... Play drive circuit, 10...
...Fast forward drive circuit, 11...
Reverse drive circuit, 12... Rewind drive circuit. Figure 2 Figure 3 Figure 1

Claims (1)

[Claims] 1. Mode selection operation means provided in common for at least two of the two or more modes, and a circuit that outputs one pulse each time the mode selection operation means is operated. , a time constant circuit that takes out an output with a time width according to a preset time constant; the output is connected to the input of the time constant circuit; the input is connected to the output of the time constant circuit; When there is no output from the circuit, when the pulse is supplied, a control signal for selecting one of the plurality of modes is taken out, while when there is an output from the time constant circuit, when the pulse is supplied, the control signal is output to select one of the modes. A control circuit that takes out a control signal to cancel the mode, and its input is connected to the output of the above-mentioned time constant circuit, and when the above-mentioned pulse is supplied, the above-mentioned mode is different from the above-mentioned one mode when the above-mentioned time constant circuit has an output. A mode selection switching device characterized by comprising a control circuit that takes out a control signal for selecting a mode.