JPS5546640A - Video amplifier circuit - Google Patents

Video amplifier circuit

Info

Publication number
JPS5546640A
JPS5546640A JP11976578A JP11976578A JPS5546640A JP S5546640 A JPS5546640 A JP S5546640A JP 11976578 A JP11976578 A JP 11976578A JP 11976578 A JP11976578 A JP 11976578A JP S5546640 A JPS5546640 A JP S5546640A
Authority
JP
Japan
Prior art keywords
crt
circuit
signal
video amplifier
amplifier 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
JP11976578A
Other languages
Japanese (ja)
Inventor
Jiyouji Yoshioka
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.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric Co 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 NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP11976578A priority Critical patent/JPS5546640A/en
Publication of JPS5546640A publication Critical patent/JPS5546640A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain excellent picture quality by compensating the lowering of a high-band component of a video amplifier circuit, by adding an adder circuit, differentiating circuit and complementary symmetrical switching circuit.
CONSTITUTION: The 1st control electrode of each electron gun of color CRT is applied with three primary color signals R, G and B, and the 2nd control electrode of each electron gun is connected in common and then applied with signal Y' obtained by differentiating C and R luminance signal and then by amplifying it by complementary symmetrical switching circuits Q1 and Q2. As a result, high-band component, attenuated by signal Y', of signals R, G and B inputted to the cathode of CRT are compensated and a current through CRT approximates nearly to a rectangular wave, so that color picture quality can be defined.
COPYRIGHT: (C)1980,JPO&Japio
JP11976578A 1978-09-28 1978-09-28 Video amplifier circuit Pending JPS5546640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11976578A JPS5546640A (en) 1978-09-28 1978-09-28 Video amplifier circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11976578A JPS5546640A (en) 1978-09-28 1978-09-28 Video amplifier circuit

Publications (1)

Publication Number Publication Date
JPS5546640A true JPS5546640A (en) 1980-04-01

Family

ID=14769622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11976578A Pending JPS5546640A (en) 1978-09-28 1978-09-28 Video amplifier circuit

Country Status (1)

Country Link
JP (1) JPS5546640A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5959018U (en) * 1981-04-14 1984-04-17 松下電器産業株式会社 Amplifier for audio system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5959018U (en) * 1981-04-14 1984-04-17 松下電器産業株式会社 Amplifier for audio system

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