Comb filter design for separating luminance and chrominance...

Details Comb filter design for separating luminance and chrominance... Comb filter design for separating luminance and chrominance...

2007-01-23

2007-01-23

Lee, Michael H. (Department: 2622)

Television

Image signal processing circuitry specific to television

Chrominance-luminance signal separation

C348S665000

Reexamination Certificate

active

10776121

ABSTRACT:
Provided are decoding methods and decoders for calculating comb filter error and performing comb filter calculation used for decoding video signals. In one aspect, a method of calculating comb filter error used for decoding a video signal comprises storing a plurality of consecutive video lines of the video signal, the plurality of consecutive video lines including a first video line, a second video line appearing immediately before the first video line, and a third video line appearing immediately before the second video line; receiving a current video line of the video signal, wherein the current video line appears immediately after the first video line; obtaining a first difference between the current video line and the second video line; obtaining a second difference between the first video line and the third video line; and filtering the video signal for separating components in the video signal, based on the differences.

REFERENCES:
patent: 4343017 (1982-08-01), Wilkinson
patent: 4639767 (1987-01-01), Suzuki
patent: 4641180 (1987-02-01), Richter
patent: 4851898 (1989-07-01), Asahara
patent: 5206715 (1993-04-01), Jung et al.
patent: 6175389 (2001-01-01), Felts et al.
patent: 6392714 (2002-05-01), Steinberg et al.

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