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
Application number
JP2468785U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP2468785U priority Critical patent/JPS61143385U/ja
Publication of JPS61143385U publication Critical patent/JPS61143385U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Studio Circuits (AREA)
  • Color Television Systems (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] それぞれ映像信号が入力される複数の入力端子
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.
JP2468785U 1985-02-25 1985-02-25 Pending JPS61143385U (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01160784U (en) * 1988-04-28 1989-11-08

Citations (3)

* Cited by examiner, † Cited by third party
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01160784U (en) * 1988-04-28 1989-11-08

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