Image pickup circuit

摘要

An image pickup circuit including a plurality of circuit blocks. Each of the plurality of circuit blocks includes a plurality of comparing elements, a single counter, and a plurality of storage units. Each of the comparing elements compares a pixel signal supplied through a vertical signal line connected to vertically aligned pixels in a plurality of pixels arranged in a matrix, and a slope signal whose voltage is changed from an initial voltage at a constant slope. The counter counts an elapsed time since a voltage of the slope signal starts to change from the initial voltage. Each of the storage units stores a count value obtained by the counter in accordance with a comparison result of the comparator, the count value corresponding to an elapsed time until the voltage of the slope signal is changed from the initial voltage to a voltage coinciding with the pixel signal.

主权项

1. An imaging device comprising:
a pixel array comprising a plurality of pixels; a plurality of signal lines, each of which is coupled to at least one pixel in the pixel array; a reference signal generation circuit; a plurality of comparators, each of which is coupled to at least two of the plurality of signal lines and the reference signal generation circuit; and a plurality of counters, wherein each of the plurality of counters is coupled to at least two comparators of the plurality of comparators.