Apparatus and method for converting optical signal into electrical signal
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United States of America Patent
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app pub date -
Sep 5, 2006
filing date -
Jul 6, 2005
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Abandoned
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Abstract
An apparatus and a method for converting optical signal into electrical signal are disclosed. The apparatus includes a photo diode (PD) and a charge pump circuit. The PD receives an optical signal. The optical signal is then converted into a current signal. The charge pump circuit is electrically connected to the PD and performs a charge-discharge to generate a pulse signal based on the current signal. The characteristic of the pulse signal relates to the intensity of the optical signal.
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