Sughrue Mion, PLLC
Tag detector of near field communication (NFC) device, NFC device and mobile device including the same
A tag detector of a near field communication (NFC) device includes a current monitor configured to monitor a current flowing in a regulator in a preset phase and a detection phase to generate a first sensing current and a second sensing current, respectively, a current to voltage converter configured to convert the first sensing current and the second sensing current to a first sensing voltage and a second sensing voltage, respectively, an analog to digital converter configured to convert the first sensing voltage and the second sensing voltage to a first digital code and a second digital code, respectively, and a decision circuit configured to compare the first digital code and the second digital code, and output a detection signal indicating that another NFC device is within a communication range of the NFC device, based on the comparison.
SAMSUNG ELECTRONICS CO., LTD.
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Jun-Ho Byeong-Taek Jin-Woo
Kim Moon Kim