PHOTOELECTRIC CONVERSION DEVICE

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PHOTOELECTRIC CONVERSION DEVICE

This abstract first appeared for US patent application 18917024 titled 'PHOTOELECTRIC CONVERSION DEVICE

Original Abstract Submitted

A photoelectric conversion device includes a timing generation unit periodically generating a first and second timings indicating light emission timings in a first and second modes, respectively, a light receiving unit generating a light reception signal based on incident light incident in an exposure period, and an exposure period control unit. A length of a cycle of the second timing is longer than that of the first timing. In the first mode, the exposure period control unit generates the control signal indicating a timing of the exposure period having a time width corresponding to one of periods into which one cycle of the first timing is divided. The exposure period control unit determines the timing of the exposure period in the second mode based on a frequency distribution in which a count value of the light reception signal is associated with each exposure period in the first mode.