JPS56141683A - Color demodulation equipmemt - Google Patents

Color demodulation equipmemt

Info

Publication number
JPS56141683A
JPS56141683A JP4489180A JP4489180A JPS56141683A JP S56141683 A JPS56141683 A JP S56141683A JP 4489180 A JP4489180 A JP 4489180A JP 4489180 A JP4489180 A JP 4489180A JP S56141683 A JPS56141683 A JP S56141683A
Authority
JP
Japan
Prior art keywords
switch
chrominance
signal
demodulator
polarity
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
JP4489180A
Other languages
Japanese (ja)
Other versions
JPS6132872B2 (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 JP4489180A priority Critical patent/JPS56141683A/en
Publication of JPS56141683A publication Critical patent/JPS56141683A/en
Publication of JPS6132872B2 publication Critical patent/JPS6132872B2/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 exactly obtain an R-Y 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 inverting the static switch only in case of inconformity of the polarities. CONSTITUTION:This equipment is provided with the first switch 12 which is inverted at every 1 horizontal scanning of a chrominance signal of PAL system, and the second static switch 16 which is switched when matching the R-Y demodulation polarity of the polarity relating to its R-Y axis, and the output of this switch 16 is provided to the R-Y demodulator 6. Also, a chrominance subcarrier of the R-Y axis from the subcarrier oscillator 26 is provided to the demodulator 6 by synchronizing with a burst signal which has been added to the chrominance signal, and the polarity of the chrominance subcarrier provided to this demodulator 6, and that of the chrominance signal are decided by the phase discriminator 23. The switch 16 is inverted by the FF17 at the time of inconformity of the polarities, so that the R-Y color difference signal can be obtained exactly without controlling the phase of the line switch of fH/2.
JP4489180A 1980-04-04 1980-04-04 Color demodulation equipmemt Granted JPS56141683A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4489180A JPS56141683A (en) 1980-04-04 1980-04-04 Color demodulation equipmemt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4489180A JPS56141683A (en) 1980-04-04 1980-04-04 Color demodulation equipmemt

Publications (2)

Publication Number Publication Date
JPS56141683A true JPS56141683A (en) 1981-11-05
JPS6132872B2 JPS6132872B2 (en) 1986-07-30

Family

ID=12704097

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4489180A Granted JPS56141683A (en) 1980-04-04 1980-04-04 Color demodulation equipmemt

Country Status (1)

Country Link
JP (1) JPS56141683A (en)

Also Published As

Publication number Publication date
JPS6132872B2 (en) 1986-07-30

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