Patent ID: 6596979
Filing Date: 2003-07-22
Classification: H04N

Abstract:
An image sensor array comprising:a number of arrays of photodetectors and interlaced by two arrays of buffers, wherein the arrays of photodetectors are sequentially exposed to a document moving across the image sensor; wherein signals generated in each of the arrays of photodetectors are sequentially shifted into the two arrays of buffers; wherein buffered signals shifted out from the two arrays of buffers are integrated with the signals generated in each of the arrays of photodetectors to produce accumulated scanning signals of the document; an array of sampling circuits, each coupled to one of the photodetectors in a last array of the arrays of photodetectors, receiving respectively the accumulated signals and converting the accumulated scanning signals into sampled pixel signals; and a multiplexer, coupled to the array of sampling circuits, sequentially outputting the sampled pixel signals.