JPS63130959U - - Google Patents
Info
- Publication number
- JPS63130959U JPS63130959U JP2303287U JP2303287U JPS63130959U JP S63130959 U JPS63130959 U JP S63130959U JP 2303287 U JP2303287 U JP 2303287U JP 2303287 U JP2303287 U JP 2303287U JP S63130959 U JPS63130959 U JP S63130959U
- Authority
- JP
- Japan
- Prior art keywords
- time
- recording
- circuit
- recording start
- setting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005236 sound signal Effects 0.000 claims 3
- 238000001514 detection method Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
Description
第１図は本考案のミユート回路を示す回路図、
第２図及び第３図は第１図の各部波形を示すタイ
ミングチヤートである。
５，６…タイマー設定回路、１８…微分回路、
２４…判別回路、３２…増幅器、３４…外部スピ
ーカ、４３…制御回路。
Figure 1 is a circuit diagram showing the mute circuit of the present invention.
2 and 3 are timing charts showing waveforms of various parts in FIG. 1. 5, 6...Timer setting circuit, 18...Differentiating circuit,
24...Discrimination circuit, 32...Amplifier, 34...External speaker, 43...Control circuit.
Claims (1)
される増幅器を内蔵した電子機器において、現在
時刻を記録開始時刻とすると共に記録開始以降の
時刻を記録終了時刻として設定し、該記録開始時
刻から記録終了時刻まで音声信号を記録媒体に記
録させる第１のタイマー設定回路と、現在以降の
時刻を記録開始時刻とすると共に記録開始以降の
時刻を記録終了時刻として設定し、該記録開始時
刻から記録終了時刻まで音声信号を記録媒体に記
録させる第２のタイマー設定回路と、前記第１、
第２のタイマー設定回路の設定状態に応じた電源
電圧の変動を検出する検出回路と、前記第１、第
２のタイマー設定回路を設定した際に得られる設
定信号、及び前記検出回路にて得られる検出信号
によつて、前記第１、第２のタイマー設定回路の
何れか一方の設定状態を判別する判別回路と、該
判別回路にて得られる判別信号によつて、前記増
幅器の前段の音声信号をミユート制御する制御回
路より成ることを特徴とするミユート回路。 In an electronic device that has a built-in amplifier that amplifies the audio signal and is connected to an external speaker, the current time is set as the recording start time, and the time after the recording start is set as the recording end time, and the recording end time is set from the recording start time. A first timer setting circuit that records an audio signal on a recording medium until the current time, and a time after the current time as a recording start time, and a time after the recording start as a recording end time, and from the recording start time to the recording end time. a second timer setting circuit for recording the audio signal on a recording medium;
a detection circuit that detects fluctuations in power supply voltage according to the setting state of the second timer setting circuit; a setting signal obtained when setting the first and second timer setting circuits; A determination circuit that determines the setting state of either the first or second timer setting circuit based on a detection signal obtained by the determination circuit; A mute circuit comprising a control circuit that mute-controls a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2303287U JPS63130959U (en) | 1987-02-19 | 1987-02-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2303287U JPS63130959U (en) | 1987-02-19 | 1987-02-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63130959U true JPS63130959U (en) | 1988-08-26 |
Family
ID=30820973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2303287U Pending JPS63130959U (en) | 1987-02-19 | 1987-02-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63130959U (en) |
-
1987
- 1987-02-19 JP JP2303287U patent/JPS63130959U/ja active Pending
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