JPS54124636A - Color demodulation circuit - Google Patents

Color demodulation circuit

Info

Publication number
JPS54124636A
JPS54124636A JP3249578A JP3249578A JPS54124636A JP S54124636 A JPS54124636 A JP S54124636A JP 3249578 A JP3249578 A JP 3249578A JP 3249578 A JP3249578 A JP 3249578A JP S54124636 A JPS54124636 A JP S54124636A
Authority
JP
Japan
Prior art keywords
color
signals
pulse
color difference
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.)
Granted
Application number
JP3249578A
Other languages
Japanese (ja)
Other versions
JPS6142918B2 (en
Inventor
Takafumi Okada
Shoji Omori
Kiyonori Tominaga
Atsushi Matsuzaki
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 JP3249578A priority Critical patent/JPS54124636A/en
Publication of JPS54124636A publication Critical patent/JPS54124636A/en
Publication of JPS6142918B2 publication Critical patent/JPS6142918B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To demodulate signals accurately and simply by utilizing the non-modulation carrier, which is included in chrominance signals, in the demodulation of a SECAM-system color television.
CONSTITUTION: Original chrominance signals DI include blue and red color difference signals and are transmitted to color difference signal demodulator circuit 5 and 6 for blue and red at a prescribed timing by switching circuit 3. Switching is performed by output FO of the flip-flop which uses fly-back pulse EP as trigger pulse TR. Demodulated color difference signals BO and RO are supplied to color blanking circuits 7 and 8. Then, horizontal periodical pulse WH is obtained from fly-back pulse FP and is supplied to a color blanking circuit, and color demodulation signals B-Y and R-Y are outputted. The period of the non-modulation carrier is utilized as a sampling hold voltage of control output circuits 9 and 10.
COPYRIGHT: (C)1979,JPO&Japio
JP3249578A 1978-03-22 1978-03-22 Color demodulation circuit Granted JPS54124636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3249578A JPS54124636A (en) 1978-03-22 1978-03-22 Color demodulation circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3249578A JPS54124636A (en) 1978-03-22 1978-03-22 Color demodulation circuit

Publications (2)

Publication Number Publication Date
JPS54124636A true JPS54124636A (en) 1979-09-27
JPS6142918B2 JPS6142918B2 (en) 1986-09-24

Family

ID=12360568

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3249578A Granted JPS54124636A (en) 1978-03-22 1978-03-22 Color demodulation circuit

Country Status (1)

Country Link
JP (1) JPS54124636A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03111510U (en) * 1990-02-26 1991-11-14

Also Published As

Publication number Publication date
JPS6142918B2 (en) 1986-09-24

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