METHOD AND CIRCUIT FOR CONFIRMING CORRECTNESS OF SIGNAL AND CHARGING SYSTEM USING SAME

摘要

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.

主权项

1. A method for confirming correctness of a signal, comprising the steps of:
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 different from the first time point, the first voltage and the second voltage being different from each other; determining whether a predetermined relationship between the first voltage and the second voltage exists; and if the predetermined relationship exists, confirming that a signal provided from a node coupled to the time-dependent impedance circuit is correct.