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JPS6489793A - Chrominance signal processor - Google Patents

Chrominance signal processor

Info

Publication number
JPS6489793A
JPS6489793A JP62246017A JP24601787A JPS6489793A JP S6489793 A JPS6489793 A JP S6489793A JP 62246017 A JP62246017 A JP 62246017A JP 24601787 A JP24601787 A JP 24601787A JP S6489793 A JPS6489793 A JP S6489793A
Authority
JP
Japan
Prior art keywords
color
signal
color difference
circuit
difference 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
JP62246017A
Other languages
Japanese (ja)
Inventor
Motohiko Takeuchi
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
Original Assignee
Toshiba 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 filed Critical Toshiba Corp
Priority to JP62246017A priority Critical patent/JPS6489793A/en
Publication of JPS6489793A publication Critical patent/JPS6489793A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To prevent color bleeding in the direction of a height from generating by detecting the fluctuation quantity of the time base of a color difference signal by means of a part of the color difference signal obtained with the demodulation of a carrier chrominance signal corresponding to the color burst signal, and rotation-controlling the demodulation axis of the carrier chrominance signal according to a detected output. CONSTITUTION:Phase shifting circuits 3 and 4 between a color demodulating circuit 1 and a carrier generating circuit 2 phase-shift carriers fI and fQ generated by the carrier generating circuit 2 by a prescribed quantity according to the control signal form color bleeding decreasing circuits 5 and 6, and supply them to the color demodulating circuit 1 as demodulated carriers fII and fQQ. Color difference signals FI and FQ from the color demodulating circuit 1 are supplied to the respective color bleeding decreasing circuits 5 and 6. The color difference signal FI is supplied to a burst gate circuit 51, and the color difference signal corresponding to the color burst signal is detected. The detected color difference signal is integrated by a integrating circuit 52 to have a prescribed time constant, and the time base fluctuation accompanying to the amplitude fluctuation of the carrier chrominance signal is decreased.
JP62246017A 1987-09-30 1987-09-30 Chrominance signal processor Pending JPS6489793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62246017A JPS6489793A (en) 1987-09-30 1987-09-30 Chrominance signal processor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62246017A JPS6489793A (en) 1987-09-30 1987-09-30 Chrominance signal processor

Publications (1)

Publication Number Publication Date
JPS6489793A true JPS6489793A (en) 1989-04-04

Family

ID=17142218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62246017A Pending JPS6489793A (en) 1987-09-30 1987-09-30 Chrominance signal processor

Country Status (1)

Country Link
JP (1) JPS6489793A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6218610B1 (en) 1997-06-25 2001-04-17 Nec Corporation Structure for shielding an electronic circuit from radio waves

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6218610B1 (en) 1997-06-25 2001-04-17 Nec Corporation Structure for shielding an electronic circuit from radio waves

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