Television – Camera – system and detail – Combined image signal generator and general image signal...
Reexamination Certificate
2006-07-11
2006-07-11
Ho, Tuan (Department: 2615)
Television
Camera, system and detail
Combined image signal generator and general image signal...
C348S222100, C348S251000
Reexamination Certificate
active
07075574
ABSTRACT:
A shading correction circuit is disclosed which prevents unevenness and partial dull of an edge caused by noise which remains when noise is sliced using a fixed value as a threshold level to be used for distinction between noise and an edge component. The shading correction circuit includes a level correction circuit for correcting a level of shading, and a noise removal circuit for receiving a level adjusting coefficient used by the level correction circuit and controlling the slice level of level slice to be used to remove an edge component mixed in a noise component with the level adjusting coefficient.
REFERENCES:
patent: 6028957 (2000-02-01), Katori et al.
patent: 2002/0126313 (2002-09-01), Namizuka
patent: 63-3569 (1988-01-01), None
patent: 08-307674 (1996-11-01), None
patent: 09-224156 (1997-08-01), None
Ho Tuan
NEC Corporation
Selby Gevell
Sughrue & Mion, PLLC
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