Patent ID: 9191555
Filing Date: 2015-11-17
Classification: H04N

Abstract:
1. A signal compensating method of an image capture device, comprising: receiving sensing signals from an image sensor pixel array; converting the sensing signals into digital signals using a plurality of analog-to-digital converters, respectively; and compensating the digital signals using offset values corresponding to the plurality of analog-to-digital converters, respectively, the offset values having resolutions higher than resolutions of the digital signals, the digital signals after the compensating having resolutions higher than resolutions of the digital signals before the compensating, wherein the signal compensating method further comprises: receiving reference signals from the image sensor pixel array when image sensor pixels of the image sensor pixel array that are not exposed to light are read; converting the reference signals into reference digital signals using the plurality of analog-to-digital converters; generating a plurality of difference values by comparing the reference digital signals to previously stored digital signals; generating a plurality of difference averages, the difference averages being averages of values from among the generated difference values; and before compensating the digital signals using the offset values, generating the offset values with respect to each of the plurality of analog-to-digital converters based on the difference averages.