JPS5556793A - Line decision circuit for secam color video signal - Google Patents

Line decision circuit for secam color video signal

Info

Publication number
JPS5556793A
JPS5556793A JP13016078A JP13016078A JPS5556793A JP S5556793 A JPS5556793 A JP S5556793A JP 13016078 A JP13016078 A JP 13016078A JP 13016078 A JP13016078 A JP 13016078A JP S5556793 A JPS5556793 A JP S5556793A
Authority
JP
Japan
Prior art keywords
line
modulation carrier
supplied
line decision
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.)
Granted
Application number
JP13016078A
Other languages
Japanese (ja)
Other versions
JPS6150437B2 (en
Inventor
Tetsuo Kato
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 JP13016078A priority Critical patent/JPS5556793A/en
Publication of JPS5556793A publication Critical patent/JPS5556793A/en
Publication of JPS6150437B2 publication Critical patent/JPS6150437B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE: To secure a correct line decision by giving the feedback-type control to the reference voltage of the level comparator even in case the input level of the non- modulation carrier may vary, by carrying out the line decision by means of the non- modulation carrier.
CONSTITUTION: The carrier signal of the SECAM color video signal given from input terminal 4 is supplied to gate circuit 5, and pulse PH sent from terminal 1 is supplied to gate pulse generator circuit 6 to sample the area of the non-modulation carrier. This sampled pulse is supplied to circuit 5 to deliver the non-modulation carrier SO. Furthermore, non-modulation carrier SF featuring the level difference every line is obtained through filter 7 and then applied to level comparator 8 with addition of FF3 which functions as a comparison circuit which compares the output of comparator 8 with the reference voltage. After this, pulse PH given from terminal 1 is supplied to FF3 as well as to FF2 to give the line decision of the color signal. And the line decision is carried out by means of the non-modulation carrier, and the feedback-type control is given to the reference voltage of comparator 8. Thus the correct decision is ensured for the line.
COPYRIGHT: (C)1980,JPO&Japio
JP13016078A 1978-10-23 1978-10-23 Line decision circuit for secam color video signal Granted JPS5556793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13016078A JPS5556793A (en) 1978-10-23 1978-10-23 Line decision circuit for secam color video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13016078A JPS5556793A (en) 1978-10-23 1978-10-23 Line decision circuit for secam color video signal

Publications (2)

Publication Number Publication Date
JPS5556793A true JPS5556793A (en) 1980-04-25
JPS6150437B2 JPS6150437B2 (en) 1986-11-04

Family

ID=15027426

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13016078A Granted JPS5556793A (en) 1978-10-23 1978-10-23 Line decision circuit for secam color video signal

Country Status (1)

Country Link
JP (1) JPS5556793A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60103794A (en) * 1983-11-10 1985-06-08 Matsushita Electric Ind Co Ltd Recording and reproducing device
JPS60134590A (en) * 1983-12-22 1985-07-17 Fuji Photo Film Co Ltd Line sequential discriminating circuit

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0278544A (en) * 1988-09-14 1990-03-19 Toray Ind Inc Film for printed laminate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60103794A (en) * 1983-11-10 1985-06-08 Matsushita Electric Ind Co Ltd Recording and reproducing device
JPS60134590A (en) * 1983-12-22 1985-07-17 Fuji Photo Film Co Ltd Line sequential discriminating circuit

Also Published As

Publication number Publication date
JPS6150437B2 (en) 1986-11-04

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