JPS5549089A - Color signal reproduction system of video player - Google Patents

Color signal reproduction system of video player

Info

Publication number
JPS5549089A
JPS5549089A JP12405278A JP12405278A JPS5549089A JP S5549089 A JPS5549089 A JP S5549089A JP 12405278 A JP12405278 A JP 12405278A JP 12405278 A JP12405278 A JP 12405278A JP S5549089 A JPS5549089 A JP S5549089A
Authority
JP
Japan
Prior art keywords
carrier
signal
phase
output
modulation
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
JP12405278A
Other languages
Japanese (ja)
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 JP12405278A priority Critical patent/JPS5549089A/en
Publication of JPS5549089A publication Critical patent/JPS5549089A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To eliminate color phase irregularity by canceling variation in time axis of a recording and reproducing system by performing carrier suppressing AM modulation and recording of a sub-carrier phase-inverted by a color difference signal in each line period and than obtaining the mean phase of adjacent scanning line outputs of a reproduction output of a picture signal.
CONSTITUTION: First color difference signal B-Y is applied to AM modulator 5 and an output from sub-carrier wave generator 3 which generates frequency fS= (n+1/4)fH (fH; line frequency) is passed through 90°-phase shifter 4 to obtain a signal, by which carrier suppressing AM modulation is performed. Further, 2nd phase difference signal R-Y is applied to AM modulator 10 and carrier suppressing AM modulation is performed by a signal leading or lagging a sub-carrier from generator 3 by 90° by turns. Further, outputs from modulators 5 and 10 are added by adder 11, whose output and luminance signal Y is added by adder 12, an output from which is recorded on a recording medium where chroma signals have been recorded. In reproduction, chroma signals are reproduced and signals, obtained by inverting sum and difference components of chroma signals between adjacent scanning lines, are added, thereby canceling variation in time axis.
COPYRIGHT: (C)1980,JPO&Japio
JP12405278A 1978-10-04 1978-10-04 Color signal reproduction system of video player Pending JPS5549089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12405278A JPS5549089A (en) 1978-10-04 1978-10-04 Color signal reproduction system of video player

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12405278A JPS5549089A (en) 1978-10-04 1978-10-04 Color signal reproduction system of video player

Publications (1)

Publication Number Publication Date
JPS5549089A true JPS5549089A (en) 1980-04-08

Family

ID=14875777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12405278A Pending JPS5549089A (en) 1978-10-04 1978-10-04 Color signal reproduction system of video player

Country Status (1)

Country Link
JP (1) JPS5549089A (en)

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