COMPENSATION CIRCUIT AND METHOD FOR CONTROLLING BIAS VOLTAGE SUPPLIED PHOTODIODE

摘要

A compensation circuit to control bias voltage supplied from a plurality of photodiodes contained in a pixel comprises: a controller to monitor a dark count generated from photodiodes, and determining photodiodes requiring the change of bias voltage among the photodiodes based on the dark count; and a bias voltage supplier to supply the bias voltage to the determined photodiodes in accordance to the control of the control part.