JPS55123282A - Color signal processing circuit - Google Patents

Color signal processing circuit

Info

Publication number
JPS55123282A
JPS55123282A JP2998479A JP2998479A JPS55123282A JP S55123282 A JPS55123282 A JP S55123282A JP 2998479 A JP2998479 A JP 2998479A JP 2998479 A JP2998479 A JP 2998479A JP S55123282 A JPS55123282 A JP S55123282A
Authority
JP
Japan
Prior art keywords
burst
signal
reproduction
emphasis
mode
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
JP2998479A
Other languages
Japanese (ja)
Other versions
JPS6159594B2 (en
Inventor
Noboru Kojima
Akira Shibata
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2998479A priority Critical patent/JPS55123282A/en
Publication of JPS55123282A publication Critical patent/JPS55123282A/en
Publication of JPS6159594B2 publication Critical patent/JPS6159594B2/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

Abstract

PURPOSE:To simplify IC-implementation by giving the function of burst emphasis in recording and burst de-emphasis in reproduction in two-hour mode while neither recording nor reproduction is carried out in four-hour mode. CONSTITUTION:Switch circuit 3 puts recording/reproduction mode switching into effect and respective color or reproduced color signals are led to AGC circuit 4 from input terminals 1 and 2. Circuit 4 exercises control so that a burst signal of the best level will be outputted at any time. Burst emphasis circuit 7 emphasizes the burst signal to a chroma signal in two-hour mode but does not lay the emphasis in four- hour mode. Burst de-emphasis circuit 12, on the other hand, suppresses the burst signal in reproduction two-hour mode and never does it in reproduction four-hour mode. Switch circuit 16 selects a signal to burst gate amplifier 17 according to the mode and amplifier 17 extracts only the burst signal from the color signal. Then, 1H-delay line 11 allows only the color signal to pass through and functions to remove a cross-talk component from an adjacent track.
JP2998479A 1979-03-16 1979-03-16 Color signal processing circuit Granted JPS55123282A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2998479A JPS55123282A (en) 1979-03-16 1979-03-16 Color signal processing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2998479A JPS55123282A (en) 1979-03-16 1979-03-16 Color signal processing circuit

Publications (2)

Publication Number Publication Date
JPS55123282A true JPS55123282A (en) 1980-09-22
JPS6159594B2 JPS6159594B2 (en) 1986-12-17

Family

ID=12291216

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2998479A Granted JPS55123282A (en) 1979-03-16 1979-03-16 Color signal processing circuit

Country Status (1)

Country Link
JP (1) JPS55123282A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59138185A (en) * 1983-01-28 1984-08-08 Hitachi Ltd Recording circuit of video tape recorder

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59138185A (en) * 1983-01-28 1984-08-08 Hitachi Ltd Recording circuit of video tape recorder
JPH0134515B2 (en) * 1983-01-28 1989-07-19 Hitachi Ltd

Also Published As

Publication number Publication date
JPS6159594B2 (en) 1986-12-17

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