JPS5753193A - Color amplitude control system - Google Patents

Color amplitude control system

Info

Publication number
JPS5753193A
JPS5753193A JP55128837A JP12883780A JPS5753193A JP S5753193 A JPS5753193 A JP S5753193A JP 55128837 A JP55128837 A JP 55128837A JP 12883780 A JP12883780 A JP 12883780A JP S5753193 A JPS5753193 A JP S5753193A
Authority
JP
Japan
Prior art keywords
burst
signal
color
output
recording
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.)
Pending
Application number
JP55128837A
Other languages
Japanese (ja)
Inventor
Yasunari Arafune
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55128837A priority Critical patent/JPS5753193A/en
Publication of JPS5753193A publication Critical patent/JPS5753193A/en
Pending 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
    • H04N9/793—Processing of colour television signals in connection with recording for controlling the level of the chrominance signal, e.g. by means of automatic chroma control circuits

Landscapes

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

Abstract

PURPOSE:To prevent a video signal from overmodulation when recording the signal which is subjected to nonlinear distortion, by detecting the peak of the color signal which is stretched only a color burst signal. CONSTITUTION:The composite video signal from an input terminal 21 is applied to an AGC circuit 22 and a BPF30. The output of the AGC circuit 22 is supplied to a head 28 through an LPF23, a pre-emphasis circuit 24, an FM modulator 25, a synthesizer 26, and a recordng amplifier 27. Meanwhile, the output of the BPE30 has the burst stretched by a burst stretching circuit 31 and passes through a color signal amplifier 32 and has the peak detected by a peak detector 33. After frequency conversion, the output of the color signal amplifier 32 is returned to the original burst amplitude by a burst compressor 37 and is applied to the synthesizer 26. Thus, overmodulation for video signal recording which receives nonlinear distortion is prevented even in the recording level where the SN ratio of the color signal is in the best level.
JP55128837A 1980-09-17 1980-09-17 Color amplitude control system Pending JPS5753193A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55128837A JPS5753193A (en) 1980-09-17 1980-09-17 Color amplitude control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55128837A JPS5753193A (en) 1980-09-17 1980-09-17 Color amplitude control system

Publications (1)

Publication Number Publication Date
JPS5753193A true JPS5753193A (en) 1982-03-30

Family

ID=14994617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55128837A Pending JPS5753193A (en) 1980-09-17 1980-09-17 Color amplitude control system

Country Status (1)

Country Link
JP (1) JPS5753193A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59114605U (en) * 1983-01-19 1984-08-02 株式会社村田製作所 Variable number of stages distributed constant type filter
JPS6197286U (en) * 1984-11-30 1986-06-21
JPS6399689A (en) * 1986-10-15 1988-04-30 Sony Corp Chroma signal processing circuit

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59114605U (en) * 1983-01-19 1984-08-02 株式会社村田製作所 Variable number of stages distributed constant type filter
JPS6197286U (en) * 1984-11-30 1986-06-21
JPS6399689A (en) * 1986-10-15 1988-04-30 Sony Corp Chroma signal processing circuit

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