JPS5745793A - Chrominance signal reproducing circuit - Google Patents

Chrominance signal reproducing circuit

Info

Publication number
JPS5745793A
JPS5745793A JP12084480A JP12084480A JPS5745793A JP S5745793 A JPS5745793 A JP S5745793A JP 12084480 A JP12084480 A JP 12084480A JP 12084480 A JP12084480 A JP 12084480A JP S5745793 A JPS5745793 A JP S5745793A
Authority
JP
Japan
Prior art keywords
circuit
carrier chrominance
chrominance signal
switchover
signal
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
JP12084480A
Other languages
Japanese (ja)
Other versions
JPS6359592B2 (en
Inventor
Kazuo Tokuda
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12084480A priority Critical patent/JPS5745793A/en
Publication of JPS5745793A publication Critical patent/JPS5745793A/en
Publication of JPS6359592B2 publication Critical patent/JPS6359592B2/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
    • H04N9/64—Circuits for processing colour signals
    • H04N9/66—Circuits for processing colour signals for synchronous demodulators

Landscapes

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

Abstract

PURPOSE:To reduce the number of terminals and facilitate application of IC by installing a proper carrier chrominance signal switchover circuit in a TV receiver that receives different color TV signals and thereby using one horizontal scanning delay line for carrier chrominance signal processing of both systems in common. CONSTITUTION:Carrier chrominance signals of PAL of SECAM system applied to a carrier chrominance signal terminal 1 are processed by the first and second carrier chrominance signal processing circuits 25, 26 and added to a carrier chrominance signal switchover circuit 27, according to a switchover signal 33 discriminated by a system discriminating circuit 7. Respective carrier chrominance signal from the circuit 27 is directly inputted to an addition-subtraction circuit 29 or a line sequential switchover circuit 30. At the same time, it is added to the circuit 29 or 30 after delaying one horizontal scanning period by a one horizontal scanning period delay line 28, and processed by respective first and second carrier chrominance demodulation circuits 31, 32, and inputted to a matrix circuit 6. A system switchover signal from the circuit 7 is added to the circuit 6, and PAL or SECAM reproducing signal is outputted from the circuit 6.
JP12084480A 1980-09-01 1980-09-01 Chrominance signal reproducing circuit Granted JPS5745793A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12084480A JPS5745793A (en) 1980-09-01 1980-09-01 Chrominance signal reproducing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12084480A JPS5745793A (en) 1980-09-01 1980-09-01 Chrominance signal reproducing circuit

Publications (2)

Publication Number Publication Date
JPS5745793A true JPS5745793A (en) 1982-03-15
JPS6359592B2 JPS6359592B2 (en) 1988-11-21

Family

ID=14796351

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12084480A Granted JPS5745793A (en) 1980-09-01 1980-09-01 Chrominance signal reproducing circuit

Country Status (1)

Country Link
JP (1) JPS5745793A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5481029A (en) * 1977-12-12 1979-06-28 Matsushita Electric Ind Co Ltd Color demodulation unit
JPS54104736A (en) * 1978-02-03 1979-08-17 Sony Corp Processing circuit for chrominance signal

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5481029A (en) * 1977-12-12 1979-06-28 Matsushita Electric Ind Co Ltd Color demodulation unit
JPS54104736A (en) * 1978-02-03 1979-08-17 Sony Corp Processing circuit for chrominance signal

Also Published As

Publication number Publication date
JPS6359592B2 (en) 1988-11-21

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