JPS596342U - Audio muting circuit - Google Patents
Audio muting circuitInfo
- Publication number
- JPS596342U JPS596342U JP10225182U JP10225182U JPS596342U JP S596342 U JPS596342 U JP S596342U JP 10225182 U JP10225182 U JP 10225182U JP 10225182 U JP10225182 U JP 10225182U JP S596342 U JPS596342 U JP S596342U
- Authority
- JP
- Japan
- Prior art keywords
- switch
- circuit
- power
- closed
- processor
- 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.)
- Granted
Links
Landscapes
- Noise Elimination (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図はマイクロプロセッサ−による電源のオン、オフ
機能と音量制御機能を有する機器の概略構成を示すブロ
ック図であり、第２図はその要部の動作波形図である。
第３図は本考案の音声ミューティング用路を採用した機
器の一実施例を示すブロック図であり、第４図はその各
部の動作波形図である。
１：電源スィッチ、１′ ：連動スイッチ、２：降圧ト
ランス、３：補助電源回路、４：マイクロプロセッサ−
、５ ：Ｄ／Ａ変換回路、６ ：Ｉ）ｃ変換回路、７：
主電源制御回路、８：主電源回路、９：音声信号回路、
１１：操作クイミング検出回路、ＴＲ２：ミューティン
グ用のスイッチングトランジスタ。
“ ”： １ ： ：：ｔｏｔｌｂ
ｔｔｔｓ ｔ６ｔ７
： ： １−−ｊｌ−：：FIG. 1 is a block diagram showing a schematic configuration of a device having a microprocessor-based power on/off function and a volume control function, and FIG. 2 is an operational waveform diagram of its main parts. FIG. 3 is a block diagram showing an embodiment of a device employing the audio muting path of the present invention, and FIG. 4 is an operational waveform diagram of each part thereof. 1: Power switch, 1': Interlocking switch, 2: Step-down transformer, 3: Auxiliary power circuit, 4: Microprocessor
, 5: D/A conversion circuit, 6: I)c conversion circuit, 7:
Main power supply control circuit, 8: Main power supply circuit, 9: Audio signal circuit,
11: Operational quimming detection circuit, TR2: Switching transistor for muting. “ ”: 1:::totlb
ttts t6t7: : 1--jl-::
Claims (2)
及び音量が制御される音声信号回路を備える機器に於い
て、スイッチ操作中及びロック状態で閉成されるブツシ
ュ・ブツシュ型の電源スィッチを設け、この電源スィッ
チを介して前記プロセッサーに動作電源を供給し、且つ
、前記電源スィッチ及び該スイッチに直列に接続され前
記プロセッサーによって開閉されるスイッチ手段を介し
て前記音声信号回路に動作電源を供給すると共に、前記
電源スィッチの閉成（開放）時のスイッチ操作タイミン
グを検出する検出回路を設け、この検出回路の出力信号
を得ると前記プロセッサーがミュート信号を所定時間以
上続けて発生させ、且つ、そのミュート信号の発生後に
前記プロセッサーが前記スイッチング手段を閉成（開放
）せしめて前記所定時間内に前記音声信号回路の動作電
源電圧が動作限界値に達するよう制御し、前記ミュート
信号によって前記音声信号回路の動作を実質的に停止さ
せるようにしてなる音声ミューティング回路。(1) In equipment equipped with an audio signal circuit whose power on/off and volume are controlled by a microprocessor, a push-button type power switch that is closed during switch operation and in a locked state is provided. Supplying operating power to the processor via a power switch, and supplying operating power to the audio signal circuit via the power switch and switch means connected in series to the switch and opened and closed by the processor; A detection circuit is provided for detecting the switch operation timing when the power switch is closed (opened), and when the output signal of the detection circuit is obtained, the processor continuously generates a mute signal for a predetermined period of time or more; After the occurrence of , the processor closes (opens) the switching means to control the operating power supply voltage of the audio signal circuit to reach the operating limit value within the predetermined time, and controls the operation of the audio signal circuit by the mute signal. An audio muting circuit that virtually stops the sound.
閉成または開放する千−メンタリイー型の連動スイッチ
と、この連動スイッチの閉成または開放時に一定レベル
の信号を発生する回路とからなることを特徴とする請求 項記載の音声ミューティング回路。(2) The detection circuit comprises a thousand-mentary type interlocking switch that closes or opens only when the power switch is operated, and a circuit that generates a signal at a certain level when the interlocking switch is closed or opened. An audio muting circuit according to claim 1, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10225182U JPS596342U (en) | 1982-07-05 | 1982-07-05 | Audio muting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10225182U JPS596342U (en) | 1982-07-05 | 1982-07-05 | Audio muting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS596342U true JPS596342U (en) | 1984-01-17 |
| JPS645396Y2 JPS645396Y2 (en) | 1989-02-10 |
Family
ID=30241110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10225182U Granted JPS596342U (en) | 1982-07-05 | 1982-07-05 | Audio muting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS596342U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05335985A (en) * | 1992-05-28 | 1993-12-17 | Mitsubishi Electric Corp | Audio equipment |
-
1982
- 1982-07-05 JP JP10225182U patent/JPS596342U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05335985A (en) * | 1992-05-28 | 1993-12-17 | Mitsubishi Electric Corp | Audio equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS645396Y2 (en) | 1989-02-10 |
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