JPS60263229A - Sound recording and reproducing device - Google Patents

Abstract

PURPOSE:To confirm easily the contents of sound recording without depressing a reproducing switch especially, by constituting a titled device so that it executes a sound recording operation when a sound recording switch is turned on, and it executes automatically a reproducing operation when the sound recording is ended. CONSTITUTION:When a sound recording switch 12 is depressed, a sound recording/reproducing signal is set to a sound recording side by a switch control circuit 14, also a sound recording/reproducing start signal is outputted and applied to a control circuit 5, and a sound recording operation is executed. This sound recording signal is digitized and stored in a semiconductor memory 7. Subsequently, when the sound recording operation is ended, a sound recording/reproducing end signal is outputted from the circuit 5 and applied to the circuit 14. When the circuit 14 receives the sound recording/reproducing end signal, the circuit 5 for outputting a reproducing signal and the sound recording/reproducing start signal executes a reproducing operation, and the digital signal stored in the memory 7 is decoded to an analog value, and outputted by a loudspeaker 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a control circuit for a recording/playback switch in a recording/playback device, particularly a recording/playback device that uses a semiconductor memory to store digital signals. In various types of recording and playback devices (hereinafter referred to as solid-state recording and playback devices), the function of the switch for recording and playback is to record when the record switch is pressed, and to playback when the playback switch is pressed. However, if you want to immediately playback and check the recorded content, you have to press the playback switch each time, which is a hassle.

〔the purpose〕

The purpose of the present invention is to solve these problems, and its purpose is to automatically start playback so that once the recording switch is pressed, the recorded content can be checked without pressing the playback switch after recording. The purpose is to provide a solid-state recording device.

〔overview〕

The recording and reproducing apparatus of the present invention is equipped with a recording switch and a reproducing switch, and is characterized by having a recording and reproducing control circuit that starts recording operation when the recording switch is pressed and performs reproducing operation at the same time as the recording operation ends.

〔Example〕

Hereinafter, the present invention will be explained based on examples.

FIG. 1 is a block diagram of an embodiment of the invention.

When the recording switch 12 is pressed, the switch control circuit 14
As a result, the recording/playback signal becomes the recording side, and a recording/playback start signal is output, which is applied to the control circuit 5 to perform the recording operation. This is done by passing the signal through an input filter 6, supplying it to the encoding circuit 4, converting it into a digital signal, and storing it in the semiconductor memory 7.

Next, when the recording operation is completed, a recording/playback end signal is output from the control circuit 5 and applied to the switch control circuit 14. When the switch control circuit 14 receives the recording/playback end signal, the control circuit 5 which outputs a playback signal and a recording/playback start signal performs a playback operation, and the semiconductor memory 7
A decoding circuit 8 decodes the digital signal stored by
Amplified and filtered by 0・Speaker 1
When the playback switch 1 is pressed, a playback signal and a recording/playback start signal are output from the switch control circuit 14, and by the same operation as above, the signal stored in the semiconductor memory 7 is Decoded and played back.

FIG. 2 is an embodiment of the switch control circuit 14, and FIG. 3 is a timing chart of the embodiment.

When the recording switch 15 is pressed, a recording/playback start signal is output, the Noah gate 20 becomes high level, and a recording signal is output. Then, the recording operation starts, and the recording/playback end signal goes high. After recording for a certain period of time, recording ends and the recording/playback end signal becomes low level. Then, the 0 part becomes high, the capacitor 29 is charged, and it is gradually discharged through the resistor 27. Also, the 0th part becomes low and the 0th part becomes high, so it is a Noah game) 19. , 20. The output of the flip-flop and the output of the NOR gate 20 go low, and the recording/playback signal goes low. Further, the charge stored in the capacitor 28 passes through the resistor 24 and is discharged, so that the voltage at the 0 part gradually decreases. Nantes Gate 22
The output signal is kept low until the 0 part signal falls below the threshold voltage of the input gate, and the recording/playback start signal is output with a certain width. Since the recording/playback signal is on the playback side and the recording/playback signal is output, a playback operation is performed. The reproducing operation is also performed when the reproducing switch 16 is pressed. By configuring the switch control circuit of the embodiment of the present invention shown in Fig. 1 with the circuit shown in Fig. 2, when the recording switch is pressed and recording is performed for a certain period of time, playback is automatically performed. A device that performs this operation can be realized.

〔effect〕

As described above, according to the present invention, it is possible to provide a recording/playback device that can automatically play back the recorded content without having to press a playback switch, so that the recorded content can be easily checked.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the invention. 1... Input microphone 2... Input amplifier 3... Input filter 4... Encoding circuit 5... Control circuit 6
... Address circuit 7 ... Semiconductor memory 8 ... Decoding circuit 9 ... Output filter 10 ... Output amplifier 11 ... Output beaker 12...recording switch 13...playback switch 14...switch control circuit FIG. 2 is a circuit diagram of an embodiment of the switch control circuit of the present invention. 15...Recording switch 16...Playback switch 17-20...2 person Kanoa gate 21-24
・・・・・・2-person Nando Gate 25.26.27.3
0...Resistance 28.29...Capacitor. FIG. 6 is a timing chart of FIG. 2.

Claims (1)

[Claims] A sound signal is reproduced by a circuit that encodes an input sound signal, a semiconductor memory that stores the encoded signal, and a conversion circuit that reads out the encoded signal stored in the semiconductor memory and converts it into a sound signal. The recording/playback device has a recording switch and a playback switch, and the recording switch is turned to O.
A recording/playback device characterized in that a recording/playback control circuit is configured to enter a recording operation when turned to N, and to automatically start a playback operation when recording is completed.