Patent ID: 8009211

Claim:
An image sensing apparatus comprising: a pixel unit which has an array of a plurality of groups each including a plurality of pixels arrayed in a row direction and a column direction; and an adding unit configured to add, of pixel signals output from the plurality of pixels arrayed in the groups, homochromatic pixel signals, wherein the adding unit has, for each group, a common pixel amplifier (a) which is commonly connected to at least two homochromatic pixels and at least one non-homochromatic pixel having a color different from that of the at least two homochromatic pixels and arranged between the at least two homochromatic pixels, and (b) which is configured to add the homochromatic pixel signals of the at least two homochromatic pixels in a gate portion of the common pixel amplifier and not to add the at least one non-homochromatic pixel so that spatial centers of gravity of groups are arranged at equal pitches in at least one of the row direction and the column direction, wherein the spatial center of gravity of each group is a spatial center of gravity of the least two homochromatic pixels, of each group, whose homochromatic pixel signals are added.