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

Claim 10:
11. A control method of a photoelectric conversion device
having a 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, and a time counter that measures a time until the photon counter reaches a first threshold after starting measurement and calculates a pixel value based on the measured time,
wherein the method comprising,
changing the first threshold for the photoelectric conversion device, according to a predetermined control signal based on object information;
detecting 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 changing the first threshold includes setting the first threshold for the object region detected by the detecting the object as higher than the first threshold for the regions other than the object region.