JPS56119591A - Recording and reproducing device of color video signal - Google Patents

Recording and reproducing device of color video signal

Info

Publication number
JPS56119591A
JPS56119591A JP2253780A JP2253780A JPS56119591A JP S56119591 A JPS56119591 A JP S56119591A JP 2253780 A JP2253780 A JP 2253780A JP 2253780 A JP2253780 A JP 2253780A JP S56119591 A JPS56119591 A JP S56119591A
Authority
JP
Japan
Prior art keywords
signal
composite
recording
reproduced
reversely
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
JP2253780A
Other languages
Japanese (ja)
Other versions
JPS6313584B2 (en
Inventor
Chojuro Yamamitsu
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2253780A priority Critical patent/JPS56119591A/en
Priority to US06/158,729 priority patent/US4356506A/en
Priority to DE3022781A priority patent/DE3022781C2/en
Publication of JPS56119591A publication Critical patent/JPS56119591A/en
Publication of JPS6313584B2 publication Critical patent/JPS6313584B2/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
    • H04N9/793—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)

Abstract

PURPOSE:To improve the SN ratio of the composite signal, by recording the composite signal more emphasizingly when the chrominance signal is smaller at the recording time and by converting said emphasized signal reversely at the reproduction to obtain a reproduced color picture. CONSTITUTION:At the recording time, the composite signal is emphasized much more while the chrominance signal is smaller, and the composite signal is recorded, and the recorded signal is taken out from the recording medium by video head 10 and is separated into the luminance FM signal and low-band conversion composite signal EC by HPF21 and LPF22. After this signal EC has the burst signal amplitude fixed for the purpose of converting reversely the emphasized and recorded signal by automatic gain control circuit 28, signal EC is converted reversely in frequency converting circuit 29 and BPF30 by the continuous wave from BPF38, and time base fluctuation of the reproduced composite color signal is eliminated, and composite color signal ES of the original frequency is obtained. This signal ES is added to the reproduced luminance signal through C type comb line filter 31 by mixer 27 to output the reproduced color video signal to 40. As a result, the SN ratio of the composite signal is improved.
JP2253780A 1979-06-18 1980-02-25 Recording and reproducing device of color video signal Granted JPS56119591A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2253780A JPS56119591A (en) 1980-02-25 1980-02-25 Recording and reproducing device of color video signal
US06/158,729 US4356506A (en) 1979-06-18 1980-06-12 Automatic chrominance control circuit for a color video tape recorder
DE3022781A DE3022781C2 (en) 1979-06-18 1980-06-18 Device for the automatic control of the amplification of a color signal for a video recording device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2253780A JPS56119591A (en) 1980-02-25 1980-02-25 Recording and reproducing device of color video signal

Publications (2)

Publication Number Publication Date
JPS56119591A true JPS56119591A (en) 1981-09-19
JPS6313584B2 JPS6313584B2 (en) 1988-03-26

Family

ID=12085548

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2253780A Granted JPS56119591A (en) 1979-06-18 1980-02-25 Recording and reproducing device of color video signal

Country Status (1)

Country Link
JP (1) JPS56119591A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897992A (en) * 1981-12-07 1983-06-10 Hitachi Ltd Chroma signal recording and reproducing circuit
JPS61142894A (en) * 1985-10-18 1986-06-30 Hitachi Ltd Chrominance signal recording and reproducing circuit
JPS61196692A (en) * 1985-02-26 1986-08-30 Nec Home Electronics Ltd Video signal comparison and compensation circuit
JPS6343488A (en) * 1986-08-09 1988-02-24 Victor Co Of Japan Ltd Video signal reproducing device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5039829A (en) * 1973-08-11 1975-04-12
JPS5054230A (en) * 1973-09-10 1975-05-13
JPS5247319A (en) * 1975-10-13 1977-04-15 Victor Co Of Japan Ltd Recording/reproducing system of color video signal
JPS5384623A (en) * 1976-12-29 1978-07-26 Victor Co Of Japan Ltd Transient pulse removing system of magnetic recording and reproducing devic e

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5039829A (en) * 1973-08-11 1975-04-12
JPS5054230A (en) * 1973-09-10 1975-05-13
JPS5247319A (en) * 1975-10-13 1977-04-15 Victor Co Of Japan Ltd Recording/reproducing system of color video signal
JPS5384623A (en) * 1976-12-29 1978-07-26 Victor Co Of Japan Ltd Transient pulse removing system of magnetic recording and reproducing devic e

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5897992A (en) * 1981-12-07 1983-06-10 Hitachi Ltd Chroma signal recording and reproducing circuit
JPH0117636B2 (en) * 1981-12-07 1989-03-31 Hitachi Ltd
JPS61196692A (en) * 1985-02-26 1986-08-30 Nec Home Electronics Ltd Video signal comparison and compensation circuit
JPS61142894A (en) * 1985-10-18 1986-06-30 Hitachi Ltd Chrominance signal recording and reproducing circuit
JPH0123993B2 (en) * 1985-10-18 1989-05-09 Hitachi Ltd
JPS6343488A (en) * 1986-08-09 1988-02-24 Victor Co Of Japan Ltd Video signal reproducing device

Also Published As

Publication number Publication date
JPS6313584B2 (en) 1988-03-26

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