JPS55151884A - Recording/reproducing system for color video signal - Google Patents

Recording/reproducing system for color video signal

Info

Publication number
JPS55151884A
JPS55151884A JP6087379A JP6087379A JPS55151884A JP S55151884 A JPS55151884 A JP S55151884A JP 6087379 A JP6087379 A JP 6087379A JP 6087379 A JP6087379 A JP 6087379A JP S55151884 A JPS55151884 A JP S55151884A
Authority
JP
Japan
Prior art keywords
signal
output
switch
signals
secondary carrier
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
JP6087379A
Other languages
Japanese (ja)
Other versions
JPS6129597B2 (en
Inventor
Yuzo Yamamoto
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.)
Sanyo Electric Co Ltd
Original Assignee
Sanyo 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 Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Priority to JP6087379A priority Critical patent/JPS55151884A/en
Publication of JPS55151884A publication Critical patent/JPS55151884A/en
Publication of JPS6129597B2 publication Critical patent/JPS6129597B2/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
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/86—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded sequentially and simultaneously, e.g. corresponding to SECAM-system

Landscapes

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

Abstract

PURPOSE:To avoid occurrence of the uneven color even in the system featuring the low stability of the time axis, by turning the signal of the secondary carrier to be modulated into the line sequential signal and then modulating only the amplitude of the secondary carrier with the chrominance signal. CONSTITUTION:Video source 1 produces luminance signal Y and color difference signals R-Y and B-Y based on each of the R, G and B signals. Signals R-Y and B-Y turned into the line sequential signals through switch 7 which opens and closes with the 1/2 repetitive frequency of horizontal frequency fH. This output is then divided into two parts, and one of these two parts is inverted at inverter circuit 8. The output and the inverse output of switch 7 are supplied to switch 9 which is opened and closed with the repetitive frequency of 1/4 fH, and thus the time-series signal is led out to the output of switch 9. This signal receives the AM modulation at carrier suppression modulator 10 to be limited to the band of BPF11, and is then added with signal Y which is the output of adder 6 through adder 12 to receive the FM modulation in the form of the composite color video signal for recording. Thus no color shading is caused by fluctuation of the time axis since no hue is transmitted with the phase modulation of the secondary carrier.
JP6087379A 1979-05-16 1979-05-16 Recording/reproducing system for color video signal Granted JPS55151884A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6087379A JPS55151884A (en) 1979-05-16 1979-05-16 Recording/reproducing system for color video signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6087379A JPS55151884A (en) 1979-05-16 1979-05-16 Recording/reproducing system for color video signal

Publications (2)

Publication Number Publication Date
JPS55151884A true JPS55151884A (en) 1980-11-26
JPS6129597B2 JPS6129597B2 (en) 1986-07-08

Family

ID=13154924

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6087379A Granted JPS55151884A (en) 1979-05-16 1979-05-16 Recording/reproducing system for color video signal

Country Status (1)

Country Link
JP (1) JPS55151884A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6080390A (en) * 1983-10-11 1985-05-08 Victor Co Of Japan Ltd Recording and reproducing device of color video signal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6080390A (en) * 1983-10-11 1985-05-08 Victor Co Of Japan Ltd Recording and reproducing device of color video signal
JPH03955B2 (en) * 1983-10-11 1991-01-09 Victor Company Of Japan

Also Published As

Publication number Publication date
JPS6129597B2 (en) 1986-07-08

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