Patent ID: 7728894

Claim:
A complementary metal oxide semiconductor (CMOS) image sensor for high-speed operation comprising: a pixel array comprising a plurality of first pixels, a plurality of second pixels, and a plurality of third pixels; a plurality of correlation double sampling (CDS) circuits coupled to corresponding columns of the pixel array; and a selection circuit comprising: a plurality of input ends coupled to each CDS circuit of the plurality of CDS circuits respectively; a first output end; a second output end; a first switch coupling a 4n−3th CDS circuit to a first analog signal processor (ASP); a second switch coupling the 4n−3th CDS circuit to a second ASP; a third switch coupling a 4n−2th CDS circuit to the first ASP; a fourth switch coupling the 4n−2th CDS circuit to the second ASP; a fifth switch coupling a 4n−1th CDS circuit to the first ASP; a sixth switch coupling the 4n−1th CDS circuit to the second ASP; a seventh switch coupling a 4nth CDS circuit to the first ASP; and a eighth switch coupling the 4nth CDS circuit and to the second ASP; wherein n is a positive integer; wherein the first ASP is coupled to the first output end of the selection circuit for processing data of the plurality of first pixels and the plurality of second pixels; wherein the second ASP is coupled to the second output end of the selection circuit for processing data of the plurality of third pixels.