JPS5741090A - Line discriminating circuit of secam color signal - Google Patents

Line discriminating circuit of secam color signal

Info

Publication number
JPS5741090A
JPS5741090A JP11752380A JP11752380A JPS5741090A JP S5741090 A JPS5741090 A JP S5741090A JP 11752380 A JP11752380 A JP 11752380A JP 11752380 A JP11752380 A JP 11752380A JP S5741090 A JPS5741090 A JP S5741090A
Authority
JP
Japan
Prior art keywords
output
counter
flop
monostable multivibrator
terminal
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
JP11752380A
Other languages
Japanese (ja)
Inventor
Yoshiichi Nishimura
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 JP11752380A priority Critical patent/JPS5741090A/en
Publication of JPS5741090A publication Critical patent/JPS5741090A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/44—Colour synchronisation
    • H04N9/47—Colour synchronisation for sequential signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To exactly discriminate the frequency of nonmodulation carrier of a back porch part, by using a frequency discriminating circuit which has adopted a digital technique. CONSTITUTION:A horizontal synchronizing signal seprated from a composite color video signal triggers a monostable multivibrator 2 and 3 from an input terminal 1. A toggle flip-flop 7 is triggered at rise if an output the monostable multivibrator 2. An output of the toggle flip-flop 7 is obtained by an output terminla 11 as a line discriminating signal. An output of the monostable multivibrator 3 is provided to a preset terminal of a counter 5. An FM-changed color signal is applied to an input terminal 4 together with a nonmodulation carrier, and is supplied to a clock terminal of the counter 5. An output of the counter 5 is provided to a decoder 6, and its output is provided to an enable terminal of a counter 8. An output of the counter 8 resets the toggle flip-flop 7 through a decoder 9.
JP11752380A 1980-08-26 1980-08-26 Line discriminating circuit of secam color signal Pending JPS5741090A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11752380A JPS5741090A (en) 1980-08-26 1980-08-26 Line discriminating circuit of secam color signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11752380A JPS5741090A (en) 1980-08-26 1980-08-26 Line discriminating circuit of secam color signal

Publications (1)

Publication Number Publication Date
JPS5741090A true JPS5741090A (en) 1982-03-06

Family

ID=14713877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11752380A Pending JPS5741090A (en) 1980-08-26 1980-08-26 Line discriminating circuit of secam color signal

Country Status (1)

Country Link
JP (1) JPS5741090A (en)

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