JPS54107214A - Aperture compensating circuit - Google Patents

Aperture compensating circuit

Info

Publication number
JPS54107214A
JPS54107214A JP1456078A JP1456078A JPS54107214A JP S54107214 A JPS54107214 A JP S54107214A JP 1456078 A JP1456078 A JP 1456078A JP 1456078 A JP1456078 A JP 1456078A JP S54107214 A JPS54107214 A JP S54107214A
Authority
JP
Japan
Prior art keywords
signal
amplifier
pulse
negative
positive
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
JP1456078A
Other languages
Japanese (ja)
Inventor
Katsuhiko Yamamoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP1456078A priority Critical patent/JPS54107214A/en
Publication of JPS54107214A publication Critical patent/JPS54107214A/en
Pending legal-status Critical Current

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  • Picture Signal Circuits (AREA)

Abstract

PURPOSE: To improve S/N deterioration, which is caused inevitably by high-pass boosting, by utilizing the interrelation between scanning lines adjacent to each other.
CONSTITUTION: In the constitution of switching pulse generator circuit 12, video signal a is led to 1H delay line 13 and buffer amplifier 14. Output signals from them are added in adder 15, and the added signal is subjected to primary differentiation by primary differentiator 16. Since this differentiated signal becomes 0, a positive- direction pulse and a negative-direction pulse in the part of no level change of signal a, the rising part of signal a and the breaking part of signal a respectively, only negative-direction or positive-direction pulses can be amplified by selecting properly the bias of negative-direction pulse amplifier 17 or positive-direction pulse amplifier 18 respectively. Consequently, the primary-differentiated signal is amplified by amplifiers 17 and 18 independently, and the polarity of the signal which passed through amplifier 18 is inverted by a polarity inverter, and this signal is added in adder 20 after being converted to the same polarity. This signal is caused to pass through retriggerable monostable multivibrator 21 and is made into a proper pulse width, and after that, this signal is led to analogue switch 11.
COPYRIGHT: (C)1979,JPO&Japio
JP1456078A 1978-02-09 1978-02-09 Aperture compensating circuit Pending JPS54107214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1456078A JPS54107214A (en) 1978-02-09 1978-02-09 Aperture compensating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1456078A JPS54107214A (en) 1978-02-09 1978-02-09 Aperture compensating circuit

Publications (1)

Publication Number Publication Date
JPS54107214A true JPS54107214A (en) 1979-08-22

Family

ID=11864531

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1456078A Pending JPS54107214A (en) 1978-02-09 1978-02-09 Aperture compensating circuit

Country Status (1)

Country Link
JP (1) JPS54107214A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871770A (en) * 1981-10-26 1983-04-28 Teac Co Compensating system of video signal
JPS6395370U (en) * 1986-12-10 1988-06-20

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5871770A (en) * 1981-10-26 1983-04-28 Teac Co Compensating system of video signal
JPH0230630B2 (en) * 1981-10-26 1990-07-09 Teac Corp
JPS6395370U (en) * 1986-12-10 1988-06-20

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