JPS59114672U - Video signal switching circuit for television equipment - Google Patents
Video signal switching circuit for television equipmentInfo
- Publication number
- JPS59114672U JPS59114672U JP933883U JP933883U JPS59114672U JP S59114672 U JPS59114672 U JP S59114672U JP 933883 U JP933883 U JP 933883U JP 933883 U JP933883 U JP 933883U JP S59114672 U JPS59114672 U JP S59114672U
- Authority
- JP
- Japan
- Prior art keywords
- video signal
- switching circuit
- signal switching
- television equipment
- external
- 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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面はこの考案の一実施例の電気回路図である。
図において、１はテレビジョン機器、３は受信回路、４
は外部入力端子、５は切換回路、５３は切換接点、６は
出力端子、７は緩衝増幅回路、８は映像信号検出回路、
９，１０．１１はトランジスタを示す。The drawing is an electrical circuit diagram of one embodiment of this invention. In the figure, 1 is a television device, 3 is a receiving circuit, and 4 is a television device.
is an external input terminal, 5 is a switching circuit, 53 is a switching contact, 6 is an output terminal, 7 is a buffer amplifier circuit, 8 is a video signal detection circuit,
9, 10, and 11 indicate transistors.
Claims (1)
力するための映像信号出力端子と、外部からの映像信号
を受けるための映像信号入力端子とを備えたテレビジョ
ン機器の映像信号切換回路であって、 外部からの映像信号が前記映像信号入力端子に入力され
たか否かを検知する映像信号検知手段と、前記映像信号
検知手段による外部映像信号の入力の検知に応じて前記
映像信号入力端子に入力された前記外部映像信号を前記
映像信号出力端子に出力し、前記外部映像信号を検知し
なくなったことに応じて前記受信した映像信号を前記映
像信号出力端子に出力する映像信号切換手段とを備えた
、テレビジョン機器の映像信号切換回路。[Scope of claim for utility model registration] A television equipped with a video signal output terminal for receiving television broadcast radio waves and outputting the received video signal, and a video signal input terminal for receiving a video signal from the outside. A video signal switching circuit for a device, comprising video signal detection means for detecting whether or not an external video signal is input to the video signal input terminal, and a video signal detection means for detecting input of an external video signal by the video signal detection means. In response, the external video signal input to the video signal input terminal is output to the video signal output terminal, and in response to the fact that the external video signal is no longer detected, the received video signal is output to the video signal output terminal. A video signal switching circuit for television equipment, comprising video signal switching means for outputting the video signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP933883U JPS59114672U (en) | 1983-01-24 | 1983-01-24 | Video signal switching circuit for television equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP933883U JPS59114672U (en) | 1983-01-24 | 1983-01-24 | Video signal switching circuit for television equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59114672U true JPS59114672U (en) | 1984-08-02 |
Family
ID=30140803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP933883U Pending JPS59114672U (en) | 1983-01-24 | 1983-01-24 | Video signal switching circuit for television equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59114672U (en) |
-
1983
- 1983-01-24 JP JP933883U patent/JPS59114672U/en active Pending
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