Patent ID: 11917290
Assignee: CANON KABUSHIKI KAISHA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A photoelectric conversion device comprising:
at least one pixel including a photoelectric conversion element that outputs a signal according to an incident photon;
a photon counter that measures the number of photons incident to the pixel;
a time counter that measures a time until the photon counter reaches a first threshold after starting measurement and outputs the measured time as a pixel value; and
at least one processor or circuit configured to function as:
a first threshold changing unit configured to change the first threshold according to a predetermined control signal based on object information; and
an object detection unit configured to detect an object region based on an image signal that has been read out from a pixel region, wherein the pixel region includes two-dimensionally arranged pixels;
wherein the first threshold changing unit sets the first threshold for the object region detected by the object detection unit as higher than the first threshold for the regions other than the object region.