ASYNCHRONOUS INTEGRATION IN ROLLING SHUTTER IMAGE SENSORS

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ASYNCHRONOUS INTEGRATION IN ROLLING SHUTTER IMAGE SENSORS

This abstract first appeared for US patent application 18494502 titled 'ASYNCHRONOUS INTEGRATION IN ROLLING SHUTTER IMAGE SENSORS

Original Abstract Submitted

According to an embodiment, a method for capturing an image frame using a pixel array of an image sensor is provided. The method includes sequentially resetting each pixel row of the pixel array; sequentially reading out each pixel row of a first subset of pixel rows during a readout phase such that an integration time for each pixel of the first subset of pixel rows is equal to a fixed integration time; and globally resetting pixels of the pixel array in response to detecting that an ambient light level exceeds a threshold level, the globally resetting of the pixels occurring before a reading out of a second subset of pixel rows, each pixel row in the second subset of pixel rows having a variable integration time less than the fixed integration time and starting from the globally resetting of the pixels.