Preventing picture jitter in a digitized video signal

Details Preventing picture jitter in a digitized video signal Preventing picture jitter in a digitized video signal

2005-07-13

2009-02-24

Lee, M. (Department: 2622)

Television

Image signal processing circuitry specific to television

A/d converters

C348S616000

Reexamination Certificate

active

07495708

ABSTRACT:
The present invention proposes a method for generating a digital video signal from an analog input video signal, which prevents picture jitter in the digitized video signal when the analog input video signal is not in complete conformity with a standard. According to the invention, the method includes the steps of:detecting the type of signal source;in case the type of signal source is a non-standard type, detecting the existence of an error state;converting the analog input video signal to a digital video signal;in case an error state exists, replacing an error prone part of the digitized video signal with a substitute signal part; andin case the type of signal source is a standard type or no error state exists, keeping the digitized video signal unchanged.

REFERENCES:
patent: 4287529 (1981-09-01), Tatami et al.
patent: 5132793 (1992-07-01), Hirahata et al.
patent: 5241398 (1993-08-01), Urata et al.
patent: 0 592 932 (1994-04-01), None
patent: 0 705 034 (1996-04-01), None

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