JPS647412B2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Technical Field The present invention relates to an auto-pause circuit for automatically pausing a tape recorder when it is in a recording state. The present invention aims to provide a working autopause circuit.

(b) Background of the technology When recording on a tape recorder, normally a record button and a play button are pressed. A system called "One Record" has also been proposed in which the tape recorder is put into a recording state simply by pressing the recording button. However, in order to start recording as desired,
A commonly used method is to press a pause button before and after a recording operation to put the tape recorder in a recording pause state, and to start recording when the pause is released. However, when recording, it is troublesome for the operator to perform operations other than the recording operation, that is, press the pause button, and especially if the pause button is pressed later than the recording operation, the tape will not be recorded. There was a drawback that blank areas were created.

(C) Summary of the Invention The present invention has been made in view of the above points, and in order to automatically put the tape recorder into a recording pause state when performing a recording operation, the present invention has been made in view of the above points. A control circuit that generates a control signal, a first switch that is controlled by the output control signal of the control circuit, a differentiating circuit that differentiates the output control signal of the control circuit, and an output signal of the differentiating circuit. A controlled second switch is provided, and when the first and second switches are conductive, a pause signal is generated to automatically put the tape recorder into a recording pause state.

(D) Embodiment FIG. 1 shows an embodiment of the present invention.
2 is a recording button, 2 is a control circuit for generating a control signal when the recording button 1 is pressed, and 3 is a control circuit 2.
4, a pause button; 5, a pause circuit for generating a pause signal in response to pressing the pause button 4 to put the tape recorder in a recording pause state; 6; is a first switch whose one end is connected to the pause circuit 5 and is controlled by the output control signal of the control circuit 2; 7 is a differentiation circuit for differentiating the output control signal of the control circuit 2; 8 is the differential circuit for differentiating the output control signal of the control circuit 2; A second switch connected in series with the first switch 6 and controlled by the output signal of the differentiating circuit 7, and 9 a record player for controlling the second switch 8 in accordance with the vertical movement of the tone arm. be.

Next, the operation will be explained. When the record button 1 and the pause button 4, whose contacts close only when pressed, are not pressed, the capacitors 10 and 11 are charged to a predetermined level by the power supply voltage (+B). Further, the control circuit 2 generates an "H" signal at its output terminal when a negative pulse is applied, and the pause circuit 5 generates an "H" signal and an "L" signal at its output terminal every time a negative pulse is applied. It is configured so that these occur alternately. Therefore, when the recording button 1 and the pause button 4 are not pressed, the outputs of the control circuit 2 and the pause circuit 5 are both "L", and the tape recorder 3 is in a stopped state.

Now, if you press the record button 1 at time t ₀ ,
As shown in FIG. 2A, a negative pulse is applied to the input terminal of the control circuit 2, and an "H" signal is generated at the output terminal of the control circuit 2, as shown in FIG. 2B. Therefore, the "H" signal is applied to the tape recorder 3, and the tape recorder enters the recording state. At the same time, the "H" signal turns on the first switch 6, and after being applied to the differentiation circuit 7 and differentiated (FIG. 2C), turns on the second switch 8. Therefore, the first and second switches 6 and 8
are simultaneously turned on, and a negative pulse "L" as shown at A in FIG. 2D is applied to the input terminal of the pause circuit 5. Therefore, the output of the pause circuit 5 is the second
As shown in Figure E, the signal becomes "H" and is applied to the tape recorder 3 to enter a recording pause state. Since the output signal of the control circuit 2 and the output signal of the pause circuit 5 are applied to the tape recorder 3 substantially at the same time, the tape recorder 3 enters the recording pause state almost immediately when the recording button 1 is pressed.

When the start button of the record player 9 is pressed while the tape recorder 3 is in a recording pause state and on standby, the tone arm of the record player 9 rotates, descends onto the record, and starts playing. be done. When the tone arm descends at time _t1 , this is detected and the record player 9
Since a pulse signal is generated from , and this pulse signal turns on the second switch 8, a negative pulse "L" as shown in B in FIG. 2D is applied to the input terminal of the pause circuit 5. Therefore, the output signal of the pause circuit 5 is
It becomes "L" as shown in Fig. 2, and the tape recorder 3
The recording pause of is released, the tape recorder 3 enters the recording state, and records the song being played on the record player 9.

When the tone arm rises at time _t2 due to the end of the performance of the record player 9, etc., a pulse signal is generated from the record player 9, and this pulse signal turns on the second switch 8, so that the pause circuit 5 is turned on. A negative pulse "L" as shown at C in FIG. 2D is applied to the input terminal. Therefore, the output signal of the pause circuit 5 becomes "H" again as shown in Fig. 2 (e).
Then, the tape recorder 3 enters a recording pause state. After that, the output signal of the pause circuit 5 remains "H" in response to the pulse generated from the record player.
The state and the "L" state are repeated, and the tape recorder 3 is accordingly switched to the recording state and the recording pause state.

In order to generate pulses from the record player 9 in accordance with the vertical movement of the tone arm, the cue signal for moving the tone arm up and down can be differentiated. In addition, the pause circuit 5 has a built-in flip-flop circuit, and is set to "H" by the first pulse.
The polarity of the output signal may be inverted depending on the input pulse, such that the second pulse causes an "L" signal.

In addition, the tape recorder 3 and the record player 9
The details are omitted to simplify the explanation.

(e) Effects As described above, according to the present invention, a recording pause can be performed simply by pressing the recording button, so it is particularly effective when used in a device capable of performing synchronized recording. Further, since the first switch 6 is configured to pause the tape recorder 3 only when it is in the recording state, when the tape recorder 3 is in a state other than the recording state, for example, in the playback state, the tone of the record player 9 is Even if the arm moves up and down, no negative pulse is input to the pause circuit 5, and an unnecessary pause state can be prevented. Further, according to the present invention, auto-pause can be performed with a simple configuration of adding the first and second switches 6 and 8 and the differentiation circuit 7, so there is an advantage that an inexpensive auto-pause circuit can be provided. have

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing one embodiment of the present invention, and FIG. 2 A to H are characteristic diagrams for explaining FIG. 1. Explanation of main drawing numbers, 2... Control circuit, 3... Tape recorder, 5... Pause circuit, 6, 8... Switch, 7... Differential circuit.

Claims (1)

[Claims] 1 An auto-pause circuit that automatically puts the tape recorder into a recording pause state when the record button is pressed, and puts the tape recorder into a pause state every time a pulse signal is applied to the input terminal by pressing the pause button. a pause circuit that performs a switching operation and a pause state release operation; a control circuit that generates a control signal in response to a press of a record button and switches the tape recorder to a recording state; one end is connected to the input terminal of the pause circuit; a first switch that is turned on by a control signal output from the control circuit; a differentiation circuit that differentiates the control signal output from the control circuit; and a differentiation circuit that is connected in series with the first switch. and a second switch whose on/off operation is controlled by the output signal of the differentiation circuit and the pulse signal output from the record player when the tone arm of the record player moves up and down, and when the record button is pressed, the switch By turning on the first and second switches, a pulse signal is applied to the input terminal of the pause circuit to put the tape recorder in a pause state, and the second switch is turned on by the pulse signal output from the record player. 1. An auto-pause circuit characterized in that a pulse signal is applied to an input terminal of the pause circuit by switching to the pause state, thereby controlling switching operation of the tape recorder to the pause state and operation of canceling the pause state.