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JPS6413874A - Picture quality adjusting circuit - Google Patents

Picture quality adjusting circuit

Info

Publication number
JPS6413874A
JPS6413874A JP62170229A JP17022987A JPS6413874A JP S6413874 A JPS6413874 A JP S6413874A JP 62170229 A JP62170229 A JP 62170229A JP 17022987 A JP17022987 A JP 17022987A JP S6413874 A JPS6413874 A JP S6413874A
Authority
JP
Japan
Prior art keywords
signal
picture quality
level
quality adjusting
circuit
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
JP62170229A
Other languages
Japanese (ja)
Inventor
Masafumi Otsuka
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.)
Fujitsu General Ltd
Original Assignee
Fujitsu General Ltd
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 Fujitsu General Ltd filed Critical Fujitsu General Ltd
Priority to JP62170229A priority Critical patent/JPS6413874A/en
Publication of JPS6413874A publication Critical patent/JPS6413874A/en
Pending legal-status Critical Current

Links

Landscapes

  • Picture Signal Circuits (AREA)

Abstract

PURPOSE:To prevent the malfunction of a synchronization separation and the degradation of an S/N by prohibiting a picture quality adjusting processing in a synchronizing signal part and a back porch part in which a color burst signal is overlapped. CONSTITUTION:For a video signal inputted from an input terminal 1, a synchro nizing chip level is aligned by a clamper 8. To this signal, a lower level than a voltage level which is slightly higher than a back porch level is suppressed by a limiter 9. Based on the output signal of the limiter 9, a picture quality adjusting signal is extracted by a picture quality adjusting signal extracting circuit 2 and after this picture quality adjusting signal is level-adjusted by a level adjusting circuit 10, it is added to the video signal by an adding circuit 6.
JP62170229A 1987-07-08 1987-07-08 Picture quality adjusting circuit Pending JPS6413874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62170229A JPS6413874A (en) 1987-07-08 1987-07-08 Picture quality adjusting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62170229A JPS6413874A (en) 1987-07-08 1987-07-08 Picture quality adjusting circuit

Publications (1)

Publication Number Publication Date
JPS6413874A true JPS6413874A (en) 1989-01-18

Family

ID=15901060

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62170229A Pending JPS6413874A (en) 1987-07-08 1987-07-08 Picture quality adjusting circuit

Country Status (1)

Country Link
JP (1) JPS6413874A (en)

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