Patent ID: 11956553
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 8:
9. A method of operating an image sensor device, comprising:
sensing a pulsing light emitted by a light-emitting device, wherein the pulsing light has a pulsing frequency, and wherein the sensing is performed at least in part by:
operating a microcontroller to turn on and off a plurality of first light-sensing pixels at a first frequency, wherein each of the first light-sensing pixels has a first quantum efficiency; and
operating the microcontroller to turn on and off a plurality of second light-sensing pixels at a second frequency at least in part by setting the second frequency to be less than 1 of the pulsing frequency, wherein each of the second light-sensing pixels has a second quantum efficiency that is lower than the first quantum efficiency, and wherein the second frequency is less than the first frequency.