Optical sensor cancelling image flicker
OwnerEn-Feng Hsuinventor
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Abstract
There is provided an optical sensor that acquires a first image frame corresponding to a first flicker period and acquires a second image frame corresponding to a second flicker period. The optical sensor respectively adds pixel data of every two pixels in neighboring rows of the first image frame and the second image frame to generate a low-resolution image frame for the motion detection.
Claims20
An optical sensor, configured to acquire image frames corresponding to a flicker period of ambient light, the optical sensor comprising:
- a pixel array, comprising multiple pixel rows configured to acquire pixel data;
- a readout circuit, configured to respectively read the pixel data of the multiple pixel rows;
- and
- a processor, configured to respectively add the pixel data of an N′th pixel row and an N+1′th pixel row among the multiple pixel rows to generate a first output image, wherein N is a positive number from 1,
- wherein a third exposure start time of a third pixel row of the multiple pixel rows is later than a first exposure start time of a first pixel row of the multiple pixel rows and is prior to a second exposure start time of a second pixel row of the multiple pixel rows.
An optical sensor, configured to acquire image frames corresponding to a flicker period of ambient light, the optical sensor comprising:
- a pixel array, comprising multiple pixel rows configured to acquire pixel data;
- a readout circuit, configured to respectively read the pixel data of the multiple pixel rows;
- and
- a processor, configured to respectively add the pixel data of an N′th pixel row and an N+1′th pixel row among the multiple pixel rows to generate a first output image, wherein N is a positive number from 1,
- wherein a time difference between exposure start times of the N+1′th pixel row and the N′th pixel row among the multiple pixel rows is between ½ to ¾ of the flicker period.
An optical sensor, configured to acquire image frames corresponding to a flicker period of ambient light, the optical sensor comprising:
- a pixel array, comprising multiple pixel rows configured to acquire pixel data;
- a readout circuit, configured to respectively read the pixel data of the multiple pixel rows;
- and
- a processor, configured to respectively add the pixel data of an N′th pixel row and an N+1′th pixel row among the multiple pixel rows to generate a first output image, wherein N is a positive number from 1,
- wherein a time difference between exposure start times of the pixel rows among the multiple pixel rows is separated by one readout interval.
Dependencies are inferred from the claim text.