Patent ID: 9684416
Date: 2017-06-20
CPC Classifications: G06F

Claim:
1. An image sensor, comprising: an image sensing unit array, for sensing an object and comprising a plurality of image sensing units arranged in a sensing matrix with M rows and N columns; an image data reading circuit, for reading and outputting image data caught by at least part of the image sensing units; a control unit, a buffer comprising a plurality of buffer rows having a first buffer row and a second buffer row, each of the first buffer row and the second buffer row comprising N buffer regions corresponding to the N columns of the image sensing unit array, wherein image data from the image sensing units meeting a first condition in a k-th column of the image sensing unit array is summed in the k-th buffer region of the first buffer row; and wherein image data from image sensing units meeting as second condition in the k-th column of the image sensing unit array is summed in the k-th buffer region of the second buffer row, wherein a number of the buffer rows of the buffer is smaller than M.