Jitter correction circuit for reducing jitter components of a lu

Details Jitter correction circuit for reducing jitter components of a lu Jitter correction circuit for reducing jitter components of a lu

1992-04-03

1994-01-18

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358166, 358158, 358148, 358149, H04N 964, H04N 504

Patent

active

052803457

ABSTRACT:
A jitter correction circuit includes a first device for detecting a phase difference between a horizontal sync signal in a video signal and a system clock signal locked to burst components of the video signal. A second device serves to subject a first luminance signal in the video signal to phase interpolation to convert the first luminance signal to a second luminance signal. The second luminance signal is selectively stored into a memory to compress the second luminance signal. A third device serves to shift a compressed luminance signal outputted from the memory by a period which is responsive to the phase difference detected by the first device and which is equal to or shorter than one fourth of a 1-clock period of the system clock signal.

REFERENCES:
patent: 4870661 (1989-09-01), Yamada et al.
patent: 4908697 (1990-03-01), Tsinberg et al.
patent: 4959718 (1990-09-01), Bennett
patent: 5070395 (1991-12-01), Kitaura et al.
patent: 5150201 (1992-09-01), Mehrgardt et al.

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