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US 10,542,220 B2Granted
Image sensor device and method capable of detecting actual temperature range in which the image sensor device is being operated without using accurate temperature sensor
AssigneePixart Imaging Inc.
InventorsKei Tee Tiew, Shan Chong Tan
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Abstract
A method of an image sensor device includes: using a pixel array of the image sensor device to sense and generate at least one dark image; computing pixel statistics according to the at least one dark image; and, determining which one of a plurality of temperature ranges a temperature of the image sensor device falls within according to the pixel statistics.
Claims16
A method of an image sensor device, comprising:
- using a pixel array of the image sensor device to sense and generate at least one dark frame;
- and
- determining which one of a plurality of temperature ranges a temperature of the image sensor device falls within according to pixel statistics of the at least one dark frame;
- wherein the at least one dark frame is sensed and generated when a light emitting circuit associated with the image sensor device is being disabled and a shutter of the image sensor device is turned on with a predetermined shutter time.
1 more element
An image sensor device, comprising:
- a pixel array, configured to sense and generate at least one dark frame;
- a processing circuit, coupled to the pixel array, configured for determining which one of a plurality of temperature ranges a temperature of the image sensor device falls within according to pixel statistics of the at least one dark frame;
- wherein the at least one dark frame is sensed and generated when a light emitting circuit associated with the image sensor device is being disabled and a shutter of the image sensor device is turned on with a predetermined shutter time.
Dependencies are inferred from the claim text.