JPS5461825A - Color video signal processing circuit - Google Patents

Color video signal processing circuit

Info

Publication number
JPS5461825A
JPS5461825A JP12839877A JP12839877A JPS5461825A JP S5461825 A JPS5461825 A JP S5461825A JP 12839877 A JP12839877 A JP 12839877A JP 12839877 A JP12839877 A JP 12839877A JP S5461825 A JPS5461825 A JP S5461825A
Authority
JP
Japan
Prior art keywords
signal
color signal
signals
signal processing
video 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
JP12839877A
Other languages
Japanese (ja)
Inventor
Kazuo Yamagiwa
Tsutomu Niimura
Takashi Masuda
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.)
Sony Corp
Original Assignee
Sony 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 Sony Corp filed Critical Sony Corp
Priority to JP12839877A priority Critical patent/JPS5461825A/en
Publication of JPS5461825A publication Critical patent/JPS5461825A/en
Pending legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To obtain tolerance of the number of pins by controlling the cutting off of signals, by mixing and applying a color signal and DC control signal to either differential amplifier.
CONSTITUTION: To the base of transistor Tr3 of either one of differential amplifiers 3 and 4, a mixed signal of a color signal and DC control signal is supplied, and a constant potential voltage is to the input of the other Tr4; and this DC control signal when containing a color signal has a fixed voltage and when no color signal has a voltage below a fixed voltage, and constant-potential signals are extracted from differential amplifiers 35 and 36 regardless of the existence of the color signal. Then, a signal relating to signals of differential amplifiers 3 and 4 is supplied to the base of the Tr35 of either differential amplifier 3 or 4, and a constant potential is to the base of the other Tr36, so that amplifiers 35 and 36 will output signals with a constant potential constantly.
COPYRIGHT: (C)1979,JPO&Japio
JP12839877A 1977-10-26 1977-10-26 Color video signal processing circuit Pending JPS5461825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12839877A JPS5461825A (en) 1977-10-26 1977-10-26 Color video signal processing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12839877A JPS5461825A (en) 1977-10-26 1977-10-26 Color video signal processing circuit

Publications (1)

Publication Number Publication Date
JPS5461825A true JPS5461825A (en) 1979-05-18

Family

ID=14983806

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12839877A Pending JPS5461825A (en) 1977-10-26 1977-10-26 Color video signal processing circuit

Country Status (1)

Country Link
JP (1) JPS5461825A (en)

Similar Documents

Publication Publication Date Title
JPS51122745A (en) Dc constant-voltage power source circuit
JPS5461825A (en) Color video signal processing circuit
JPS5417623A (en) Scanning-speed modulator circuit
JPS5675788A (en) Processing circuit for chroma signal
JPS5412539A (en) Integrating circuit
JPS536553A (en) Variable gain amplifier
JPS524160A (en) Electrouic switch
JPS5336450A (en) Gain control circuit
JPS56141689A (en) Color stabilizing equipment
JPS547824A (en) Video amplifying circuit
JPS5233420A (en) Agc circuit
JPS5275251A (en) Differential amplifier circuit
JPS5317249A (en) Gain variable amplifier
JPS5227339A (en) Mixing circuit
JPS548861A (en) Constant voltage circuit
JPS5237685A (en) Servo amplifier
JPS5418658A (en) Gain control unit
JPS52127117A (en) Vided amplifier
JPS5379314A (en) Video signal processing circuit
JPS5395481A (en) Comparative amplifier
JPS54113213A (en) Acc circuit
JPS57118410A (en) Gain control circuit
JPS51111036A (en) Transistor circuit
JPS5746510A (en) Muting amplifier
JPS5398759A (en) Gain control unit