JPS56141685A - Color demodulation equipment - Google Patents

Color demodulation equipment

Info

Publication number
JPS56141685A
JPS56141685A JP4489380A JP4489380A JPS56141685A JP S56141685 A JPS56141685 A JP S56141685A JP 4489380 A JP4489380 A JP 4489380A JP 4489380 A JP4489380 A JP 4489380A JP S56141685 A JPS56141685 A JP S56141685A
Authority
JP
Japan
Prior art keywords
signal
demodulator
switch
chrominance
output
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
JP4489380A
Other languages
Japanese (ja)
Other versions
JPS6130470B2 (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 JP4489380A priority Critical patent/JPS56141685A/en
Publication of JPS56141685A publication Critical patent/JPS56141685A/en
Publication of JPS6130470B2 publication Critical patent/JPS6130470B2/ja
Granted legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00Details of colour television systems
    • H04N9/44Colour synchronisation
    • H04N9/465Synchronisation of the PAL-switch

Landscapes

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

Abstract

PURPOSE:To demodulate an exact R-Y color difference signal without controlling the phase of the line switch of fH/2, by generating a switching signal when the polarity of an output burst signal does not coincide with the polarity of a chrominance subcarrier provided to the R-Y demodulator. CONSTITUTION:A chrominance subcarrier is oscillated by the chrominance subcarrier oscillator 13 by synchronizing with a burst signal of the PAL system color TV signal, this carrier is provided to one input terminal of the first switch 17 which can be switched at every 1 horizontal scanning line, and a chrominance carrier of the R-Y axis is provided to the other input terminal. Also, a chrominance signal of the TV signal is provided to the R-Y demodulator 6, and also the output of the switch 17 is provided to the demodulator 6. Moreover, the second and third switches 22,26 which can be interlocked and switched, and the fourth switch 18 are provided, and the output of the demodulator 6 is provided to the input of the switch 22. The outputs of the switches 26, 18 are provided to the phase discriminator 27, whether the polarity of the output burst signal coincides with that of the chrominance subcarrier provided to the demodulator 6 is detected, and in the event of inconformity of the polarities, the switches 22, 26 are switched by generating a signal from the FF23.
JP4489380A 1980-04-04 1980-04-04 Color demodulation equipment Granted JPS56141685A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4489380A JPS56141685A (en) 1980-04-04 1980-04-04 Color demodulation equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4489380A JPS56141685A (en) 1980-04-04 1980-04-04 Color demodulation equipment

Publications (2)

Publication Number Publication Date
JPS56141685A true JPS56141685A (en) 1981-11-05
JPS6130470B2 JPS6130470B2 (en) 1986-07-14

Family

ID=12704155

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4489380A Granted JPS56141685A (en) 1980-04-04 1980-04-04 Color demodulation equipment

Country Status (1)

Country Link
JP (1) JPS56141685A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63132675U (en) * 1987-02-23 1988-08-30
JPH0518468U (en) * 1991-08-19 1993-03-09 株式会社ステツプ・アツプ knife

Also Published As

Publication number Publication date
JPS6130470B2 (en) 1986-07-14

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