JPS6219863U - - Google Patents
Info
- Publication number
- JPS6219863U JPS6219863U JP11101485U JP11101485U JPS6219863U JP S6219863 U JPS6219863 U JP S6219863U JP 11101485 U JP11101485 U JP 11101485U JP 11101485 U JP11101485 U JP 11101485U JP S6219863 U JPS6219863 U JP S6219863U
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- video
- signal input
- input terminal
- 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
- 238000010586 diagram Methods 0.000 description 2
Description
第１図は本考案の一実施例の構成を示す回路図
、第２図は従来例の構成を示す回路図である。
１……ビデオ信号入力端子、２……ビデオ信号
スルー出力端子、４……スイツチ、５……ビデオ
増幅器、１２……ピークホールド回路、１３およ
び１４……コンパレータ、１９……ウインドコン
パレータ、１８……ラツチ回路。
FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a circuit diagram showing the configuration of a conventional example. DESCRIPTION OF SYMBOLS 1...Video signal input terminal, 2...Video signal through output terminal, 4...Switch, 5...Video amplifier, 12...Peak hold circuit, 13 and 14...Comparator, 19...Window comparator, 18... ...Latch circuit.
Claims (1)
接続されたビデオ信号スルー出力端子と、前記ビ
デオ信号入力端子に供給されたビデオ信号を受け
るビデオ増幅器と、前記ビデオ増幅器の出力が所
定範囲であるか否かを判別する判別手段と、前記
ビデオ信号スルー出力端子にビデオ機器が接続さ
れていないときオン状態に制御され、かつ前記ビ
デオ機器が接続されているとき前記判別手段から
の判別出力により開閉が制御されるスイツチ手段
と、前記ビデオ信号入力端子を前記スイツチ手段
を介して抵抗によりアースに接続するインピーダ
ンス素子とを備えてなることを特徴とするビデオ
信号入力回路。 a video signal input terminal, a video signal through output terminal connected to the video signal input terminal, a video amplifier receiving the video signal supplied to the video signal input terminal, and whether the output of the video amplifier is within a predetermined range. and a discriminating means for discriminating whether the video signal through output terminal is connected to the video signal through output terminal, and is controlled to be in an on state when no video equipment is connected to the video signal through output terminal, and when the video equipment is connected, opening/closing is controlled by a discriminating output from the discriminating means. 1. A video signal input circuit comprising: switch means for switching the video signal; and an impedance element for connecting the video signal input terminal to ground via a resistor via the switch means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11101485U JPS6219863U (en) | 1985-07-22 | 1985-07-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11101485U JPS6219863U (en) | 1985-07-22 | 1985-07-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6219863U true JPS6219863U (en) | 1987-02-05 |
Family
ID=30990544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11101485U Pending JPS6219863U (en) | 1985-07-22 | 1985-07-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6219863U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178347A (en) * | 1994-09-29 | 1996-07-12 | Samsung Electronics Co Ltd | Suction port switchgear for air-conditioner indoor machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59122188A (en) * | 1982-12-28 | 1984-07-14 | Matsushita Electric Ind Co Ltd | Video input terminal circuit |
-
1985
- 1985-07-22 JP JP11101485U patent/JPS6219863U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59122188A (en) * | 1982-12-28 | 1984-07-14 | Matsushita Electric Ind Co Ltd | Video input terminal circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08178347A (en) * | 1994-09-29 | 1996-07-12 | Samsung Electronics Co Ltd | Suction port switchgear for air-conditioner indoor machine |
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