Harness, Dickey & Pierce, P.L.C.
NFC card reader, system including NFC card reader, and a method of operating the same
A near-field communication (NFC) card reader may include a monitor configured to measure an amplitude of a magnetic field induced by an antenna; a gain controller configured to determine an amplification gain based on the measured amplitude of the magnetic field and output a gain control signal; a signal restoration unit configured to receive a carrier signal and a data signal that overlaps with the carrier signal via the antenna, and restore the data signal from the received signals; and a variable-gain amplifier configured to amplify the data signal restored by the signal restoration unit according to the gain control signal.
Samsung Electronics Co., Ltd.
H H
H04B H04B
inventional inventional
Min Woo Hyoung Hwan Hyun Jae Jun Ho
Lee Roh Kang Kim