Signal processing unit for correcting shading of image...

Details Signal processing unit for correcting shading of image... Signal processing unit for correcting shading of image...

2004-05-12

2008-12-09

Ye, Lin (Department: 2622)

Television

Camera, system and detail

Combined image signal generator and general image signal...

C348S241000, C348S243000, C348S246000

Reexamination Certificate

active

07463294

ABSTRACT:
A signal processing unit or an electronic camera according to the present invention performs signal processing on an output signal from an image pickup part in the order of horizontal shading correction and OB clamp. In the horizontal shading correction, shading correction is also pre-performed on a lateral OB signal serving as a standard of the OB clamp. The OB clamp is performed using the shading-corrected lateral OB signal as a standard, whereby a noise generated due to shading correction can be effectively reduced.

REFERENCES:
patent: 2001/0028392 (2001-10-01), Yamamoto et al.
patent: 2002/0140830 (2002-10-01), Shirakawa et al.
patent: A 11-032218 (1999-02-01), None
patent: A 2002-072378 (2002-03-01), None
patent: A 2002-335454 (2002-11-01), None

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