JPS56141686A - Color demodulation equipment - Google Patents

Color demodulation equipment

Info

Publication number
JPS56141686A
JPS56141686A JP4489480A JP4489480A JPS56141686A JP S56141686 A JPS56141686 A JP S56141686A JP 4489480 A JP4489480 A JP 4489480A JP 4489480 A JP4489480 A JP 4489480A JP S56141686 A JPS56141686 A JP S56141686A
Authority
JP
Japan
Prior art keywords
output
switch
chrominance
signal
switches
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
JP4489480A
Other languages
Japanese (ja)
Other versions
JPS6130471B2 (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 JP4489480A priority Critical patent/JPS56141686A/en
Publication of JPS56141686A publication Critical patent/JPS56141686A/en
Publication of JPS6130471B2 publication Critical patent/JPS6130471B2/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 demodulate an exact R-Y color difference signal without controlling the phase of the line change-over switch, by controlling the first and second switches by the output of the phase discriminator, by making the polarity of a chrominance signal of the output of the first switch coincide with that of a chrominance subcarrier of the output of the third switch. CONSTITUTION:The first and second switches 12, 16 which can be interlocked and switched are installed, a chrominance signal of the PAL system color TV signal, and a chrominance signal of inverted polarity are provided to the input of the switch 12, and its output is provided to the R-Y demodulator 6. Also, the third and fourth switches 24, 28 which can be interlocked and switched at every 1 horizontal scanning line are installed, a chrominance subcarrier from the local subcarrier oscillator 20 is provided to the switch 24, and the output of the switch 24 is provided to the demodulator 6. During each horizontal scanning period, the chrominance subcarrier whose polarity has been fixed is provided to the phase discriminator 17, the switches 12, 16 are controlled by the output of the discriminator 17, the polarity of a chrominance signal of an output of the switch 12 is made to coincide with that of an output chrominance subcarrier of the switch 24, and an exact R-Y color difference signal is demodulated.
JP4489480A 1980-04-04 1980-04-04 Color demodulation equipment Granted JPS56141686A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4489480A JPS56141686A (en) 1980-04-04 1980-04-04 Color demodulation equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4489480A JPS56141686A (en) 1980-04-04 1980-04-04 Color demodulation equipment

Publications (2)

Publication Number Publication Date
JPS56141686A true JPS56141686A (en) 1981-11-05
JPS6130471B2 JPS6130471B2 (en) 1986-07-14

Family

ID=12704181

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4489480A Granted JPS56141686A (en) 1980-04-04 1980-04-04 Color demodulation equipment

Country Status (1)

Country Link
JP (1) JPS56141686A (en)

Also Published As

Publication number Publication date
JPS6130471B2 (en) 1986-07-14

Similar Documents

Publication Publication Date Title
SE8002930L (en) DEMODULATION CIRCUIT FOR REMOTE TELEVISION SIGNALS
JPS56141686A (en) Color demodulation equipment
FR2319263A1 (en) SECAM colour TV demodulator - has phase correcting circuit using demodulated colour identifiiiication signal to provide correct chrominance signals
JPS56141685A (en) Color demodulation equipment
GB1239052A (en)
JPS56141683A (en) Color demodulation equipmemt
JPS56141681A (en) Color demodulation equipment
JPS56141687A (en) Color demodulation equipment
JPS56141684A (en) Color demodulation equipment
JPS56141688A (en) Color demodulation equipment
JPS56141682A (en) Color demodulation equipment
JPS5730486A (en) Chrominance demodulator
JPS55140384A (en) Color demodulating circuit
JPS5710589A (en) Signal processing circuit of multisystem color television picture receiver
JPS5665590A (en) Color demodulation circuit
JPS5673991A (en) Color demodulation device
JPS5748887A (en) Chroma demodulator
JPS5748889A (en) Chroma demodulator
GB1514411A (en) Colour television signal demodulator circuit
JPS547823A (en) Color television receiver
JPS5542484A (en) Color signal circuit of pal color television receiver
JPS5689186A (en) Secam system color television receiver
GB1508402A (en) Colour television systems
JPS5377424A (en) Chrominance components processing unit of color television receiver
JPS6014557B2 (en) color demodulator