JPS61143385U - - Google Patents
Info
- Publication number
- JPS61143385U JPS61143385U JP2468785U JP2468785U JPS61143385U JP S61143385 U JPS61143385 U JP S61143385U JP 2468785 U JP2468785 U JP 2468785U JP 2468785 U JP2468785 U JP 2468785U JP S61143385 U JPS61143385 U JP S61143385U
- Authority
- JP
- Japan
- Prior art keywords
- electronic switch
- input terminals
- video signal
- signal detection
- input
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Studio Circuits (AREA)
- Color Television Systems (AREA)
Description
第1図は本考案に係る映像信号切換回路の回路
図、第2図は従来のメカニカルスイツチ式映像信
号切換回路の回路図、第3図は従来の電子スイツ
チ式映像信号切換回路の回路図である。
図において、19,20,21は入力端子、2
2,23,24は電子スイツチ、25,26,2
7は信号検出回路、28は電子スイツチ制御回路
、29は出力信号である。なお、各図中同一符号
は同一または相当部分を示すものである。
Figure 1 is a circuit diagram of a video signal switching circuit according to the present invention, Figure 2 is a circuit diagram of a conventional mechanical switch type video signal switching circuit, and Figure 3 is a circuit diagram of a conventional electronic switch type video signal switching circuit. be. In the figure, 19, 20, 21 are input terminals, 2
2, 23, 24 are electronic switches, 25, 26, 2
7 is a signal detection circuit, 28 is an electronic switch control circuit, and 29 is an output signal. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
と、該複数の入力端子にそれぞれ接続された電子
スイツチと、前記複数の入力端子にそれぞれ接続
され、それぞれ前記映像信号の入力を検出する信
号検出回路と、該それぞれの信号検出回路に基づ
いて前記電子スイツチの開閉制御を行なう電子ス
イツチ制御回路とを備えたことを特徴とする映像
信号切換回路。 A plurality of input terminals each receiving a video signal, an electronic switch connected to each of the plurality of input terminals, and a signal detection circuit connected to each of the plurality of input terminals and each detecting input of the video signal. , and an electronic switch control circuit that controls opening and closing of the electronic switch based on the respective signal detection circuits.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2468785U JPS61143385U (en) | 1985-02-25 | 1985-02-25 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2468785U JPS61143385U (en) | 1985-02-25 | 1985-02-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61143385U true JPS61143385U (en) | 1986-09-04 |
Family
ID=30519070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2468785U Pending JPS61143385U (en) | 1985-02-25 | 1985-02-25 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61143385U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01160784U (en) * | 1988-04-28 | 1989-11-08 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5441171A (en) * | 1977-09-08 | 1979-04-02 | Iwatsu Electric Co Ltd | Synchronous delay pulse generator |
JPS5521517A (en) * | 1978-07-28 | 1980-02-15 | Kobe Steel Ltd | Manufacture of hot-rolled coil |
JPS57142688A (en) * | 1981-02-27 | 1982-09-03 | Nippon Electric Co | Signal processing control for display unit |
-
1985
- 1985-02-25 JP JP2468785U patent/JPS61143385U/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5441171A (en) * | 1977-09-08 | 1979-04-02 | Iwatsu Electric Co Ltd | Synchronous delay pulse generator |
JPS5521517A (en) * | 1978-07-28 | 1980-02-15 | Kobe Steel Ltd | Manufacture of hot-rolled coil |
JPS57142688A (en) * | 1981-02-27 | 1982-09-03 | Nippon Electric Co | Signal processing control for display unit |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01160784U (en) * | 1988-04-28 | 1989-11-08 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS61143385U (en) | ||
JPS60146194U (en) | high speed shutter | |
JPS63120426U (en) | ||
JPS61179853U (en) | ||
JPS6412498U (en) | ||
JPS61128833U (en) | ||
JPS631294U (en) | ||
JPS6281298U (en) | ||
JPS6253831U (en) | ||
JPS61166631U (en) | ||
JPH01160775U (en) | ||
JPS5837241U (en) | squelch circuit | |
JPH0338971U (en) | ||
JPS61111012U (en) | ||
JPS61114694U (en) | ||
JPS5864140U (en) | Detection switch output circuit | |
JPS6350153U (en) | ||
JPS61173070U (en) | ||
JPS61136308U (en) | ||
JPH0184147U (en) | ||
JPH02105270U (en) | ||
JPH0379571U (en) | ||
JPS6133103U (en) | Input circuit of signal processing device | |
JPS61174843U (en) | ||
JPS61206366U (en) |