Patent ID: 8723998
Filing Date: 2014-05-13
Classification: H03M,H04N

Abstract:
1. A solid-state image pickup device comprising: a plurality of pixels; a voltage generator that generates a reference voltage; a plurality of comparators that are aligned in one direction, and compare respective voltages output from the pixels with the reference voltage; a counter that counts in tandem with a change in the reference voltage generated by the voltage generator; a plurality of buffer circuits that are connected in series with the counter, and each sequentially receives an output of the counter; a plurality of latch circuits that take in a value input to an input terminal thereof according to respective trigger signals output from the comparators; a common signal line that is commonly connected to respective inputs of the latch circuits; and a plurality of signal lines that are connected to respective outputs of the buffer circuits, and allow the output of the counter to propagate therethrough, wherein each of the signal lines includes a first signal line path that is arranged to extend along the one direction, and propagates the output of the counter, and a second signal line path that is branched from the first signal line path for supplying the output of the counter to the common signal line.