SOLID PHOTOGRAPHING DEVICE AND AN OPERATING METHOD THEREOF CAPABLE OF IMPLEMENTING OVERFLOW PROCESSING WHILE SUPPRESSING AN INCREASE IN A CIRCUIT SIZE

摘要

PURPOSE: A solid photographing device and an operating method thereof are provided to supply digital data of a predetermined value when a value of a signal outputted by a comparison unit is not chanted during a comparison operation performance period.;CONSTITUTION: A plurality of comparison units(3) compare a pixel signal with a reference signal. A counter circuit(7) starts counter operation according to the output of the reference signal. The counter circuit generates a count signal by counting clock pulses. The counter circuit supplies the count signal to a plurality of memory units(4). A data supply unit supplies digital data of a predetermined value to the memory units.;COPYRIGHT KIPO 2013