JPS5696590A - Playback device for color video signal - Google Patents

Playback device for color video signal

Info

Publication number
JPS5696590A
JPS5696590A JP17079379A JP17079379A JPS5696590A JP S5696590 A JPS5696590 A JP S5696590A JP 17079379 A JP17079379 A JP 17079379A JP 17079379 A JP17079379 A JP 17079379A JP S5696590 A JPS5696590 A JP S5696590A
Authority
JP
Japan
Prior art keywords
frequency
fed
subtractor
signal
playback
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
JP17079379A
Other languages
Japanese (ja)
Other versions
JPS6340396B2 (en
Inventor
Yoshitaka Kanemoto
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.)
Sony Corp
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Priority to JP17079379A priority Critical patent/JPS5696590A/en
Publication of JPS5696590A publication Critical patent/JPS5696590A/en
Publication of JPS6340396B2 publication Critical patent/JPS6340396B2/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
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/87—Regeneration of colour television signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To playback color video signal in excellent manner, by preventing the deterioration of video quality, by changing the cancellation of components 2 times the carrier frequency in response to the level of playback carrier chrominance signal. CONSTITUTION:Luminance signal is in angular velocity modulation, and charrier chrominance signal is in frequency-conversion to low band, and the subcarrier frequency is selected to be 1/4 line offset and reproduced for the recorded color video signal. The output of a frequency demodulator 5 is fed to a subtractor 16 as it is, and the demodulated output delayed by 1 horizontal period is fed to the subtractor 16 through the delay circuit 15 for one horizontal period. Further, the luminance signal which has no vertical correlation with the components 2 times the frequency of the carrier frequency is fed to a limiter 18 through an amplifier 17 to suppress the luminance signal without vertical correlation and to pick up 2 times frequency components to be fed to a subtractor 19. The luminance signal cancelling double frequency component from the subtractor 19 is fed to a synthesizer 20, it is mixed with the playback charrier chrominance signal from BPF8, and the deterioration of playback video quality can be avoided.
JP17079379A 1979-12-29 1979-12-29 Playback device for color video signal Granted JPS5696590A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17079379A JPS5696590A (en) 1979-12-29 1979-12-29 Playback device for color video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17079379A JPS5696590A (en) 1979-12-29 1979-12-29 Playback device for color video signal

Publications (2)

Publication Number Publication Date
JPS5696590A true JPS5696590A (en) 1981-08-04
JPS6340396B2 JPS6340396B2 (en) 1988-08-10

Family

ID=15911455

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17079379A Granted JPS5696590A (en) 1979-12-29 1979-12-29 Playback device for color video signal

Country Status (1)

Country Link
JP (1) JPS5696590A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4998172A (en) * 1983-08-31 1991-03-05 Sony Corporation Secondary beat signal cancel circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4998172A (en) * 1983-08-31 1991-03-05 Sony Corporation Secondary beat signal cancel circuit

Also Published As

Publication number Publication date
JPS6340396B2 (en) 1988-08-10

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