Signal processing apparatus signal processing method program...

Details Signal processing apparatus signal processing method program... Signal processing apparatus signal processing method program...

2006-08-08

2006-08-08

Hsia, Sherrie (Department: 2614)

Television

Image signal processing circuitry specific to television

Chrominance-luminance signal separation

C348S624000, C348S630000, C348S666000

Reexamination Certificate

active

07088399

ABSTRACT:
A dot detection section of a dot-interference detection section detects a portion where pixels are arranged as “dark-bright-dark” or “bright-dark-bright” in the horizontal direction, within a Y signal containing dot interference, separated by a YC separation process, and outputs the detection result as dot values to a horizontal array checking section and a vertical array checking section. The horizontal array checking section detects whether or not dot values of a predetermined number of pixels arranged horizontally in such a manner as to contain a subject pixel, have the same value. The vertical array checking section detects whether or not dot values of a predetermined number of pixels arranged vertically in such a manner as to contain a subject pixel, are alternately generated as1and2.An enhancement processing section performs an enhancement process on the Y signal of portions other than the portions where dot interference occurs.

REFERENCES:
patent: 4754322 (1988-06-01), Okuda et al.
patent: 4814863 (1989-03-01), Topper et al.

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