JPS58166181U - Signal switching circuit - Google Patents
Signal switching circuitInfo
- Publication number
- JPS58166181U JPS58166181U JP6126782U JP6126782U JPS58166181U JP S58166181 U JPS58166181 U JP S58166181U JP 6126782 U JP6126782 U JP 6126782U JP 6126782 U JP6126782 U JP 6126782U JP S58166181 U JPS58166181 U JP S58166181U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- playback
- switching circuit
- circuit
- signal switching
- 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
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、本考案の一実施例を示す回路図、第２図は、
ＶＴＲ動作時の各種制御信号のタイムチャートである。
１・・・・・・テレビ映像入力端子、２・・・・・・Ｖ
ＴＲ映像入力端子、３・・・・・・テレビ音声入力端子
、４・・・・・・ＶＴＲ音声入力端子、５〜８・・・・
・・アナログスイッチ、１１・・・・・・映像出力端子
、１２・・・・・・音声出力端 □子、１４・・
・・・・ＶＴＲモニター電圧入力端子、１５・・・・・
・モニターガツト信号入力端子、１９・・川・無安定フ
リップフロップ、２２・・・・・・ＬＥＤ駆動トランジ
スタ、２３・・・・・・ＬＥＤ０FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing an embodiment of the present invention.
5 is a time chart of various control signals during VTR operation. 1...TV video input terminal, 2...V
TR video input terminal, 3...TV audio input terminal, 4...VTR audio input terminal, 5-8...
...Analog switch, 11...Video output terminal, 12...Audio output terminal □ Child, 14...
...VTR monitor voltage input terminal, 15...
・Monitor gut signal input terminal, 19... River/astable flip-flop, 22... LED drive transistor, 23... LED0
Claims (1)
の再生信号を切換える信号切換回路において、該回路を
テレビ側からビデオテープ再生に切換えた際、再生を開
始したビデオテープレコーダがテープローディングを完
了するまでの所定の期間、音声及び映像出力を禁止する
為に出力するモニターカット信号により無安定マルチバ
イブレータを発振させ、表示素子を点滅状態にし、モニ
ターカット信号の反転出力と、ビデオテープ再生時に発
生するビデオテープモニター電圧信号トの論理積出力に
よって、表示素子を点灯させる回路を有する信号切換回
路。In a signal switching circuit that switches between the reception signal of a television receiver and the playback signal of a video tape recorder, when the circuit is switched from the television side to videotape playback, the time required for the videotape recorder that started playback to complete tape loading is For a predetermined period, the monitor cut signal output to prohibit audio and video output causes the astable multivibrator to oscillate, causing the display element to blink, and outputting the inverted monitor cut signal, as well as the video tape generated during video tape playback. A signal switching circuit that has a circuit that lights up a display element based on an AND output of a monitor voltage signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6126782U JPS58166181U (en) | 1982-04-28 | 1982-04-28 | Signal switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6126782U JPS58166181U (en) | 1982-04-28 | 1982-04-28 | Signal switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58166181U true JPS58166181U (en) | 1983-11-05 |
Family
ID=30071473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6126782U Pending JPS58166181U (en) | 1982-04-28 | 1982-04-28 | Signal switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58166181U (en) |
-
1982
- 1982-04-28 JP JP6126782U patent/JPS58166181U/en active Pending
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