Video signal processing apparatus and method for the time base c

Details Video signal processing apparatus and method for the time base c Video signal processing apparatus and method for the time base c

1990-12-06

1993-01-12

McElheny, Jr., Donald

Facsimile and static presentation processing

Facsimile

Recording apparatus

358324, 358314, H04N 988, H04N 989

Patent

active

051794500

ABSTRACT:
A video signal processing apparatus and method are provided in which time base errors in the luminance and color signals of a video signal reproduced from a recording medium are compensated. Time base errors in the luminance signal are reduced by storing the luminance signal in a first memory in response to a write clock singal synchronized with the video signal and subsequently reading the luminance signal from the memory in response to a first read clock signal synchronized with a stable clock signal. Time base errors in the color signal are reduced by writing the color signal in a second memory in response to the write clock signal and subsequently reading the color signal from the second memory in response to a second read clock signal synchronized with the stable clock signal such that corresponding portions of the luminance signal and the color signal are read from the first and second memories at different respective times with a predetermined time difference therebetween.

REFERENCES:
patent: 4531149 (1985-07-01), Lewis, Jr.
patent: 4577236 (1986-03-01), Takanashi
patent: 4714965 (1987-12-01), Yoshinaka et al.
patent: 4809084 (1989-02-01), Morimoto et al.
patent: 4916548 (1990-04-01), Moridka et al.

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