Patent ID: 11871129
Assignee: OMNIVISION TECHNOLOGIES, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 9:
10. The method of claim 3, further comprising determining the weighted sum of the plurality of N multiple-sampling values by:
reading a first reset-sample of the plurality of N reset-samples from an analog-to-digital converter of the image sensor;
storing, in a memory, a cumulative weighted-reset-sample equal to a product of (i) the first reset-sample and (ii) a first sample-weight of the plurality of N sample-weights;
for each reset-sample and sample-weight of the plurality of N reset-samples and N sample-weights other than the first reset-sample and the first sample-weight, (i) reading the reset-sample from the analog-to-digital converter, and (ii) increasing the cumulative weighted-reset-sample by a product of the reset-sample and the sample-weight;
reading a first signal-sample of the plurality of N reset-samples from the analog-to-digital converter;
storing, in a memory, a cumulative weighted-signal-sample equal to a product of (i) the first signal-sample and (ii) the first sample-weight of the plurality of N sample-weights;
for each signal-sample and sample-weight of the plurality of N signal-samples and N sample-weights other than the first signal-sample and first sample-weight, (i) reading the signal-sample from the analog-to-digital converter, and (ii) increasing the cumulative weighted-signal-sample by a product of the signal-sample and the sample-weight; and
determining the weighted sum as a quotient of (i) a difference between the cumulative weighted-reset-sample and the cumulative weighted-signal-sample and (ii) a product of N and a conversion gain of the pixel.