METHOD AND CIRCUIT FOR CONFIRMING CORRECTNESS OF SIGNAL AND CHARGING SYSTEM USING SAME
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United States of America Patent
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Jan 28, 2016
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Jul 7, 2015
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Jul 22, 2014
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Abstract
A method for confirming correctness of a signal includes: providing a current to flow through a time-dependent impedance circuit, wherein the time-dependent impedance circuit provides at least two resistances at two different time points, the current flowing through the time-dependent impedance circuit to generate a first voltage at a first time point, and the current flowing through the time-dependent impedance circuit to generate a second voltage at a second time point, the first voltage and the second voltage being different from each other. When a predetermined relationship exists between the first voltage and the second voltage, it is confirmed that a signal provided from a node coupled to the time-dependent impedance circuit is correct.
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