Television – Camera – system and detail – Combined image signal generator and general image signal...
Reexamination Certificate
2011-05-17
2011-05-17
Aggarwal, Yogesh K (Department: 2622)
Television
Camera, system and detail
Combined image signal generator and general image signal...
C348S241000, C348S243000, C348S245000, C348S247000
Reexamination Certificate
active
07944488
ABSTRACT:
A defective pixel detection and correction mechanism for use in an image sensor integrated circuit determines whether a current pixel is a defective pixel in a consistent manner from frame to frame. The defective pixel detection and correction mechanism also replaces defective pixels with stable replacement values. The defective pixel detection and correction mechanism has a defective pixel detection mechanism that employs a look-up table with defective pixel locations for providing a non-varying determination of whether a pixel is defective or non-defective. The defective pixel detection and correction mechanism also has a defective pixel correction mechanism that employs a consistent replacement choice facility to provide a previous pixel value in the same frame, on the same row, and a predetermined number of pixels from the current pixel location as a replacement value and a replacement unit (e.g., multiplexer) for replacing the defective pixel value with the replacement value.
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Aggarwal Yogesh K
Aptina Imaging Corporation, Inc.
RatnerPrestia
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