NOISE REDUCTION UNIT INCLUDED IN SENSOR ARRAY OF MULTI APERTURE CAMERA, AND OPERATION METHOD THEREFOR
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United States of America Patent
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Mar 4, 2015
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Mar 4, 2015
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Abstract
A noise reduction unit included in a sensor array of a multi aperture camera comprises: at least one programmable gain amplifier (PGA) that outputs a difference value between a reset voltage for at least one pixel included in the sensor array and a signal voltage for the at least one pixel, and/or respective values, as an analog signal for the at least one pixel; and at least one AD converter that converts the outputted analog signal for the at least one pixel to a digital signal for the at least one pixel and outputs the digital signal, wherein the at least one AD converter performs an over-sampling operation that samples the output signal of the at least one PGA for the at least one pixel multiple times and/or an averaging operation that calculates an average value for output signal of the at least one PGA which has been sampled multiple times.
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