Dynamic range extending method and apparatus using subsampling
First Claim
1. A method of subsampling a plurality of signals from one frame of a pixel array within one frame, pixels within the pixel array belonging to one of at least two sets, each set being configured to sense value of same image parameter, the method comprising:
- controlling integration times for first and second signals for each set output from the pixel array, controlling including using a first integration time for the first signal of the set and using a second integration time, different than the first integration time, for the second signal of the set; and
calculating a synthesized value for each set using the first and second signals having different integration times.
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Abstract
A method and apparatus subsampling a plurality of signals from one frame of a pixel array, pixels within the pixel array belonging to one of at least two sets, each set configured to sense values of a same image parameter, includes controlling integration times for first and second signals for each set output from the pixel array, controlling including using a first integration time for the first signal of the set and using a second integration time, different than the first integration time, for the second signal of the set, and calculating a synthesized value for each set using the first and second signals having different integration times.
16 Citations
42 Claims
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1. A method of subsampling a plurality of signals from one frame of a pixel array within one frame, pixels within the pixel array belonging to one of at least two sets, each set being configured to sense value of same image parameter, the method comprising:
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controlling integration times for first and second signals for each set output from the pixel array, controlling including using a first integration time for the first signal of the set and using a second integration time, different than the first integration time, for the second signal of the set; and calculating a synthesized value for each set using the first and second signals having different integration times.
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2-19. -19. (canceled)
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20. An imaging apparatus, comprising:
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an array of pixels configured to output a plurality of signals within one frame, pixels within the pixel array belonging one of at least two sets, each set being configured to sense value of a same image parameter; and a controller configured to generate a synthesized value from first and second signals for each set output from the pixel array, generation of the synthesized value includes using a first integration time for the first signal, using a second integration time, different than the first integration time, for the second signal, and calculating a sub-sampled value for each set from the first and second signals having different integration times for each set. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39-41. -41. (canceled)
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42. A system, comprising:
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a processor; a memory device in communication with the processor; and an image sensor in communication with at least one of the processor and the memory device, the image sensor including, a pixel array configured to output a plurality of signals within one frame, pixels within the pixel array belonging one of at least two sets, each set being configured to sense values of a same image parameter; a controller configured to generate synthesized value from first and second signals for each set output from the pixel array, generation of the synthesized value includes using a first integration time for the first signal, using a second integration time, different than the first integration time, for the second signal, and calculating a sub-sampled value for each set from the first and second signals having different integration times for each set; and an analog to digital converter configured to receive synthesized value from the controller and to output a corresponding digital signal to the one of the processor and memory device.
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Specification