JPS56141684A - Color demodulation equipment - Google Patents

Color demodulation equipment

Info

Publication number
JPS56141684A
JPS56141684A JP4489280A JP4489280A JPS56141684A JP S56141684 A JPS56141684 A JP S56141684A JP 4489280 A JP4489280 A JP 4489280A JP 4489280 A JP4489280 A JP 4489280A JP S56141684 A JPS56141684 A JP S56141684A
Authority
JP
Japan
Prior art keywords
polarity
switch
chrominance subcarrier
chrominance
demodulator
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
JP4489280A
Other languages
Japanese (ja)
Other versions
JPS6132873B2 (en
Inventor
Noriyuki Sagishima
Teruo Kitani
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4489280A priority Critical patent/JPS56141684A/en
Publication of JPS56141684A publication Critical patent/JPS56141684A/en
Publication of JPS6132873B2 publication Critical patent/JPS6132873B2/ja
Granted 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
    • H04N9/465—Synchronisation of the PAL-switch

Landscapes

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

Abstract

PURPOSE:To obtain an exact color difference signal without controlling the phase of the line switch of fH/2, by deciding the polarity of an R-Y axis component of a burst signal, and that of a chrominance subcarrier provided to the R-Y demodulator, by means of the phase discriminator, and switching and inverting the static switch at the time of inconformity of the polarities. CONSTITUTION:A chrominance signal whose polarity is inverted to the R-Y axis at every 1 horizontal scanning line is provided to the R-Y demodulator 6, and the first switch 13 for inverting at every scanning line the polarity of a chrominance subcarrier for R-Y demodulation provided to the demodulator 6 is installed. Also, the second switch of static type 17 is provided by cascading it to the switch 13, and it is switched when matching the polarity of the chrominance subcarrier from the chrominance subcarrier 22 for demodulation and the demodulation polarity. The polarity of a burst signal which has been added to the chrominance signal, and that of the chrominance subcarrier for demodulation are decided by the phase discriminator 19, and when the polarity of an R-Y axis component of the burst signal does not coincide with that of the chrominance subcarrier provided to the demodulator 6, the switch 17 is swithced so as to be inverted by the FF18, and an exact R-Y color difference signal is output.
JP4489280A 1980-04-04 1980-04-04 Color demodulation equipment Granted JPS56141684A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4489280A JPS56141684A (en) 1980-04-04 1980-04-04 Color demodulation equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4489280A JPS56141684A (en) 1980-04-04 1980-04-04 Color demodulation equipment

Publications (2)

Publication Number Publication Date
JPS56141684A true JPS56141684A (en) 1981-11-05
JPS6132873B2 JPS6132873B2 (en) 1986-07-30

Family

ID=12704124

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4489280A Granted JPS56141684A (en) 1980-04-04 1980-04-04 Color demodulation equipment

Country Status (1)

Country Link
JP (1) JPS56141684A (en)

Also Published As

Publication number Publication date
JPS6132873B2 (en) 1986-07-30

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