Video signal processing circuit

Television – Image signal processing circuitry specific to television – A/d converters

Reexamination Certificate

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Details

C348S525000

Reexamination Certificate

active

07456903

ABSTRACT:
A video signal processing circuit is supplied with an analog composite video signal formed by combining at least a luminance signal with a sync signal, and processes the analog composite video signal. The video signal processing circuit has an analog filter which removes high-frequency components from the analog composite video signal, a sync separation circuit which separates a sync signal from an output signal from the analog filter, an AD converter which performs AD conversion on the analog composite video signal, and a digital video signal processing circuit which performs predetermined video signal processing on the composite video signal digitized by the AD converter, by using the sync signal obtained by the sync separation circuit.

REFERENCES:
patent: 6704009 (2004-03-01), Tachibana et al.
patent: 2005/0275756 (2005-12-01), Miura
patent: 1331548 (2002-01-01), None
patent: 9-163291 (1997-06-01), None
patent: 10-254422 (1998-09-01), None
patent: 2003-153298 (2003-05-01), None
patent: 0144962 (1998-04-01), None
patent: 0191207 (1999-01-01), None
English Patent Abstract of JP2003153298 from esp@cenet, published May 23, 2003 (1 page).
English Patent Abstract of JP10254422 from esp@cenet, published Sep. 25, 1998 (1 page).
Korean Office Action for Korean Application No. 10-2005-93405, mailed on Nov. 13, 2006 (5 pages).
Korean Patent Abstract for Korean Publication No. 100191207, Publication date Jan. 23, 1999 (1 page).
Korean Patent Abstract for Korean Publication No. 100144962, Publication date Apr. 24, 1998 (1 page).
Chinese Office Action for Chinese Application No. 200510129169.8, mailed on Jun. 8, 2007 (8 pages).
esp@cenet patent abstract for Chinese Publication No. 1331548, Publication date Jan. 16, 2002 (1 page).
esp@cenet patent abstract for Japanese Publication No. 9163291, Publication date Jun. 20, 1997 (1 page).

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