JPS5496918A - Clamping system - Google Patents

Clamping system

Info

Publication number
JPS5496918A
JPS5496918A JP333878A JP333878A JPS5496918A JP S5496918 A JPS5496918 A JP S5496918A JP 333878 A JP333878 A JP 333878A JP 333878 A JP333878 A JP 333878A JP S5496918 A JPS5496918 A JP S5496918A
Authority
JP
Japan
Prior art keywords
circuit
clamping
vertical
video signal
signal
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
JP333878A
Other languages
Japanese (ja)
Inventor
Shunichi Onishi
Masaru Sakurai
Shinichi Makino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Japan Broadcasting Corp
Original Assignee
Toshiba Corp
Nippon Hoso Kyokai NHK
Tokyo Shibaura Electric Co Ltd
Japan Broadcasting Corp
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 by Toshiba Corp, Nippon Hoso Kyokai NHK, Tokyo Shibaura Electric Co Ltd, Japan Broadcasting Corp filed Critical Toshiba Corp
Priority to JP333878A priority Critical patent/JPS5496918A/en
Publication of JPS5496918A publication Critical patent/JPS5496918A/en
Pending legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To apply the steady pedestal clamp to the video signal which is affected by the ghost fault by deciding the clamping period through the synchronization secured by the vertical synchronous signal when the clamping is given is the vertical flyback time of the video signal.
CONSTITUTION: The video signal supplied through input terminal 1 is isolated through synchronization isolater circuit 7, and the isolated horizontal synchronous signal 9 is applied to gate pulse generator circuit 12. At the same time, the isolated composite synchronous signal 8 is separated via vertical synchronization isolator circuit 10 to obtain vertical synchronous signal 11. Signal 11 is then applied to circuit 12 to reset the counter of circuit 12. At the area where the clamping is carried out by the output of circuit 12 and for the vertical flyback time, switch 5 is closed, and the clamping time is decided for the video signal sent from terminal 1. Then the output to which the steady pedestal clamping is applied via buffer amplifier 3 is delivered to output terminal 14.
COPYRIGHT: (C)1979,JPO&Japio
JP333878A 1978-01-18 1978-01-18 Clamping system Pending JPS5496918A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP333878A JPS5496918A (en) 1978-01-18 1978-01-18 Clamping system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP333878A JPS5496918A (en) 1978-01-18 1978-01-18 Clamping system

Publications (1)

Publication Number Publication Date
JPS5496918A true JPS5496918A (en) 1979-07-31

Family

ID=11554561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP333878A Pending JPS5496918A (en) 1978-01-18 1978-01-18 Clamping system

Country Status (1)

Country Link
JP (1) JPS5496918A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132471U (en) * 1982-03-03 1983-09-07 ソニー株式会社 Ghost removal device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5248655U (en) * 1975-10-03 1977-04-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5248655U (en) * 1975-10-03 1977-04-06

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58132471U (en) * 1982-03-03 1983-09-07 ソニー株式会社 Ghost removal device

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