JPS5511649A - Color decision circuit for secam-system color television receiver - Google Patents

Color decision circuit for secam-system color television receiver

Info

Publication number
JPS5511649A
JPS5511649A JP8440278A JP8440278A JPS5511649A JP S5511649 A JPS5511649 A JP S5511649A JP 8440278 A JP8440278 A JP 8440278A JP 8440278 A JP8440278 A JP 8440278A JP S5511649 A JPS5511649 A JP S5511649A
Authority
JP
Japan
Prior art keywords
circuit
signal
color
secam
color decision
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
JP8440278A
Other languages
Japanese (ja)
Inventor
Takayuki Sugimoto
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP8440278A priority Critical patent/JPS5511649A/en
Publication of JPS5511649A publication Critical patent/JPS5511649A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To secure an assured operation of the circuit with reduction of the lowering of the detection sensitivity as well as the noise effect through a simple constitution by extracting furthermore the color decision signal via the signal which is obtained by extracting the color decision signal with the vertical pulse along with detection of amplitude.
CONSTITUTION: In the circuit which supplies the SECAM chrominance subcarrier signals through terminal 1 and delivers color difference signals R-Y, G-Y and B-Y through terminals 11, 12 and 13 respectively, the phase decision is given to chrominance signal switch circuit 5 via the color decision signal sent from color decision circuit 16. Circuit 16 extracts the chrominance subcarrier signal through 1st gate circuit 18 and via vertical pulse (b), and only B-Y color decision signal (e) is drawn out from B-Y color difference signal (a) through 2nd gate circuit 22 and via signal (d) underwent the amplitude detection to be delivered. In this case, switch circuit 25 does not operate, and the circuit continues the normal state. In case the circuit receives the signals excepting those of the SECAM-system and circuit 5 has a malfunction, circuit 22 delivers no output. And circuit 25 operates to generate the voltage to reset circuit 5 to the normal operation.
COPYRIGHT: (C)1980,JPO&Japio
JP8440278A 1978-07-10 1978-07-10 Color decision circuit for secam-system color television receiver Pending JPS5511649A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8440278A JPS5511649A (en) 1978-07-10 1978-07-10 Color decision circuit for secam-system color television receiver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8440278A JPS5511649A (en) 1978-07-10 1978-07-10 Color decision circuit for secam-system color television receiver

Publications (1)

Publication Number Publication Date
JPS5511649A true JPS5511649A (en) 1980-01-26

Family

ID=13829580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8440278A Pending JPS5511649A (en) 1978-07-10 1978-07-10 Color decision circuit for secam-system color television receiver

Country Status (1)

Country Link
JP (1) JPS5511649A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482768A2 (en) * 1990-09-26 1992-04-29 Kabushiki Kaisha Toshiba Multiple systems adaptive television receiver

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0482768A2 (en) * 1990-09-26 1992-04-29 Kabushiki Kaisha Toshiba Multiple systems adaptive television receiver

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