SEMICONDUCTOR DEVICE
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United States of America Patent
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Issued Date -
Oct 27, 2016
app pub date -
Apr 15, 2016
filing date -
Apr 24, 2015
priority date (Note) -
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Abstract
A semiconductor device includes light receiving elements, selection switches, a light receiving circuit and a control circuit. Each light receiving element receives a light and outputs a detection signal according to an intensity of the light. The selection switches are correspondingly provided for the light receiving elements. Each selection switch selectively allows the detection signal to be outputted. The light receiving circuit includes a capacitive coupling element and an amplifying circuit. The light receiving circuit is provided for a prescribed number of the light receiving elements and connected to the light receiving elements through the selection switches. The control circuit switches the selection switches sequentially so that the detection signals of the light receiving elements are received in the light receiving circuit through the capacitive coupling element. The control circuit controls the light receiving circuit to process the detection signals by amplifying the detection signals by the amplifying circuit.
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