JPH02841U - - Google Patents
Info
- Publication number
- JPH02841U JPH02841U JP7731288U JP7731288U JPH02841U JP H02841 U JPH02841 U JP H02841U JP 7731288 U JP7731288 U JP 7731288U JP 7731288 U JP7731288 U JP 7731288U JP H02841 U JPH02841 U JP H02841U
- Authority
- JP
- Japan
- Prior art keywords
- audio signal
- microphone
- input terminal
- level
- output
- 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 13
- 238000001514 detection method Methods 0.000 claims 4
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000010354 integration Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Transmitters (AREA)
Description
第１図は本考案に係る自動スタート式ワイヤレ
スマイクロホンの一実施例を示す回路図、第２図
は実施例を説明するためのタイミングチヤート、
第３図は本考案の他の実施例を示す回路図、第４
図は本考案に係る自動スタート式ワイヤレスマイ
クロホンの受信装置として好適のリモコンハンド
セツトを示す平面図、第５図はワイヤレスマイク
ロホンを示す回路図である。
１…マイクロホン、２…アンプ、３…変調送信
部、４…アンテナ、５…レベル検出器、６…コン
パレータ、９…積分回路、１０…スイツチ。
FIG. 1 is a circuit diagram showing an embodiment of an automatic start type wireless microphone according to the present invention, and FIG. 2 is a timing chart for explaining the embodiment.
FIG. 3 is a circuit diagram showing another embodiment of the present invention;
FIG. 5 is a plan view showing a remote control handset suitable as a receiving device for an automatic start type wireless microphone according to the present invention, and FIG. 5 is a circuit diagram showing the wireless microphone. DESCRIPTION OF SYMBOLS 1...Microphone, 2...Amplifier, 3...Modulation transmitter, 4...Antenna, 5...Level detector, 6...Comparator, 9...Integrator circuit, 10...Switch.
Claims (1)
信する変調送信手段と、 前記マイクロホンに導入される音声信号のレベ
ルを検出するレベル検出手段と、 このレベル検出手段の出力を所定の直流レベル
と比較するコンパレータと、 このコンパレータからの出力を積分する積分回
路と、 この積分回路の積分出力に基づいてオン、オフ
動作して前記変調送信手段に電源電圧を供給する
スイツチ手段とを具備したことを特徴とする自動
スタート式ワイヤレスマイクロホン。 (2) 音声信号が導入されるマイクロホンと、 このマイクロホンに導入される音声信号のレベ
ルを検出するレベル検出手段と、 このレベル検出手段の出力を所定の直流レベル
と比較するコンパレータと、 このコンパレータからの出力を積分する積分回
路と、 音声信号がライン入力され、ライン入力の有無
を識別して識別信号を出力する音声信号入力端子
と、 前記マイクロホン又は音声信号入力端子からの
音声信号を変調して送信する変調送信手段と、 前記識別信号に基づいて前記音声信号入力端子
又はマイクロホンのいずれかを前記変調送信手段
に接続する切替え手段と、 前記積分回路の積分出力又は識別信号に基づい
てオン、オフ動作して前記変調送信手段に電源電
圧を供給するスイツチ手段とを具備したことを特
徴とする自動スタート式ワイヤレスマイクロホン
。[Claims for Utility Model Registration] (1) A microphone into which an audio signal is introduced, a modulation transmission means for modulating and transmitting the audio signal from the microphone, and detecting the level of the audio signal introduced into the microphone. level detection means; a comparator for comparing the output of the level detection means with a predetermined DC level; an integration circuit for integrating the output from the comparator; An automatic start type wireless microphone characterized by comprising a switch means for supplying a power supply voltage to a modulation transmitting means. (2) a microphone into which an audio signal is introduced; a level detection means for detecting the level of the audio signal introduced into the microphone; a comparator for comparing the output of the level detection means with a predetermined DC level; an integrating circuit that integrates the output of the microphone or the audio signal input terminal; an audio signal input terminal that receives an audio signal as a line input, identifies whether there is a line input, and outputs an identification signal; and an audio signal input terminal that modulates the audio signal from the microphone or the audio signal input terminal. a modulating transmitting means for transmitting data; a switching means for connecting either the audio signal input terminal or the microphone to the modulating transmitting means based on the identification signal; and switching means for connecting either the audio signal input terminal or the microphone to the modulating transmitting means based on the integral output of the integrating circuit or the identifying signal; An automatic start type wireless microphone comprising switch means that operates to supply a power supply voltage to the modulation transmitting means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7731288U JPH02841U (en) | 1988-06-13 | 1988-06-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7731288U JPH02841U (en) | 1988-06-13 | 1988-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02841U true JPH02841U (en) | 1990-01-05 |
Family
ID=31302306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7731288U Pending JPH02841U (en) | 1988-06-13 | 1988-06-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02841U (en) |
-
1988
- 1988-06-13 JP JP7731288U patent/JPH02841U/ja active Pending
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