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Method of operating contactless IC card reader, detection circuit of contactless IC card reader, contactless IC card reader and card system including the same
Method of operating contactless IC card reader, detection circuit of contactless IC card reader, contactless IC card reader and card system including the same
A method of operating a contactless integrated circuit (IC) card reader includes calculating a first transition time of at least one first magnetic pulse during a first transition interval and calculating a second transition time of a second magnetic pulse during a second transition interval. The first transition time is calculated in a calibration phase, and the second transition time is calculated in a detection phase. A contactless IC card is determined to be within a communication rage of the reader based on a comparison of the first and second transition times.
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