Patent ID: 7432971

Claim:
An image sensor for converting optical images to electric outputs, comprising: a plurality of unit pixels each including a photosensitive pixel for performing a photoelectric conversion of incident light, and a plurality of storage pixels for storing, on a frame-by-frame basis, signal electrons generated in said photosensitive pixel for a plurality of frames photographed at different times, said image sensor outputting the signal electrons from said storage pixels after a photographing operation; wherein said storage pixels within each of said unit pixels are arranged successively, or arranged with said photosensitive pixel disposed between certain of said storage pixels, so that the signal electrons for each said storage pixel are moved independently through said storage pixels; and signal electrons newly generated during a frame in said photosensitive pixel within each of said unit pixels are added to relevant signal electrons which generated during a different frame among the signal electrons moved independently through said storage pixels within said unit pixel.