Patent ID: 8102442

Claim:
An image sensor circuit, comprising: a pixel cell array having a plurality of pixel cells arranged along a plurality of column lines; a plurality of readout circuits connected to said column lines, each of said readout circuits comprising an analog-to-digital converter, a plurality of parallel busbars, and a multiplexer for selectively connecting said busbars to said analog-to-digital converter; wherein between two of said column lines which are connected to a first one of said readout circuits located at a first side of said pixel cell array, there is a column line which is connected to a second one of said readout circuits located at a second side of said pixel cell array opposite to said first side, wherein each of said busbars has a subset of said column lines associated to it by switches located at intersections of the busbars and of said associated column lines for selectively opening and closing an electrical connection between one of said column lines and one of said busbars, each of said busbars of a respective readout circuit extending across the same subset of said column lines, and no two adjacent column lines being associated to a same busbar, wherein the column lines and the busbars are arranged at two different layers in the image sensor circuit, and wherein the switches are located in a layer between busbars and column lines at intersections between the column lines and the busbars.