JPS54134925A - Recorder for pal color video signal - Google Patents

Recorder for pal color video signal

Info

Publication number
JPS54134925A
JPS54134925A JP4286978A JP4286978A JPS54134925A JP S54134925 A JPS54134925 A JP S54134925A JP 4286978 A JP4286978 A JP 4286978A JP 4286978 A JP4286978 A JP 4286978A JP S54134925 A JPS54134925 A JP S54134925A
Authority
JP
Japan
Prior art keywords
pilot signal
signal
phase
pulse
recorder
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
JP4286978A
Other languages
Japanese (ja)
Other versions
JPS643116B2 (en
Inventor
Masahiko Machida
Masahiro Kanbara
Yoshimaru Maruno
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 JP4286978A priority Critical patent/JPS54134925A/en
Publication of JPS54134925A publication Critical patent/JPS54134925A/en
Publication of JPS643116B2 publication Critical patent/JPS643116B2/ja
Granted legal-status Critical Current

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  • Color Television Systems (AREA)

Abstract

PURPOSE: To prevent the occurrence of a color noise and variation in chromaticity with the definite operation of an APC circuit, by stabilizing the phase of a chrominance signal by inputting a pilot signal with constant phase at a recording time in a horizontal blanking interval.
CONSTITUTION: A color burst signal is smoothed by a filter circuit to obtain a mean phase within one period. A pulse synchronizing with this phase is inputted to a gate circuit and a gate pulse is formed from a horizontal synchronizing pulse. A pilot signal in a burst shape is therefore formed in each horizontal blanking interval. The pilot signal is added to a chrominance signal and then frequency- converted before being recorded. At the time of regeneration, only the pilot signal can be extracted and on the basis of the pilot signal, APC of the chrominance signal is performed.
COPYRIGHT: (C)1979,JPO&Japio
JP4286978A 1978-04-12 1978-04-12 Recorder for pal color video signal Granted JPS54134925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4286978A JPS54134925A (en) 1978-04-12 1978-04-12 Recorder for pal color video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4286978A JPS54134925A (en) 1978-04-12 1978-04-12 Recorder for pal color video signal

Publications (2)

Publication Number Publication Date
JPS54134925A true JPS54134925A (en) 1979-10-19
JPS643116B2 JPS643116B2 (en) 1989-01-19

Family

ID=12648034

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4286978A Granted JPS54134925A (en) 1978-04-12 1978-04-12 Recorder for pal color video signal

Country Status (1)

Country Link
JP (1) JPS54134925A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809084A (en) * 1985-02-04 1989-02-28 Matsushita Electric Industrial Co., Ltd. Apparatus for processing video signal
EP0311117A2 (en) * 1987-10-08 1989-04-12 Victor Company Of Japan, Limited VTR having pilot signal control function for selecting playback luminance signal filter characteristics

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4809084A (en) * 1985-02-04 1989-02-28 Matsushita Electric Industrial Co., Ltd. Apparatus for processing video signal
EP0311117A2 (en) * 1987-10-08 1989-04-12 Victor Company Of Japan, Limited VTR having pilot signal control function for selecting playback luminance signal filter characteristics
EP0669770A2 (en) * 1987-10-08 1995-08-30 Victor Company Of Japan, Limited VTR having a chrominance sub-carrier phase shifting circuit
EP0669770A3 (en) * 1987-10-08 1996-01-03 Victor Company Of Japan VTR having a chrominance sub-carrier phase shifting circuit.

Also Published As

Publication number Publication date
JPS643116B2 (en) 1989-01-19

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