Patent ID: 11947049
Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATION
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A ranging system comprising:
a lighting device that emits emitted light; and
a light receiving element that receives reflected light of the emitted light, wherein
the light receiving element comprises:
a pixel array in which a plurality of pixels each including an SPAD is arranged in a matrix;
a pixel drive unit that controls each pixel in the pixel array to be an active pixel or an inactive pixel;
a leakage current detection unit that detects a leakage current of the inactive pixel; and
a voltage control unit that controls a voltage supplied to a side of an anode or a side of a cathode of the SPAD such that the leakage current has a current value within a predetermined range.