专利名称：NFC card reader, system including NFC card
reader, and a method of operating the same
发明人：Jun Ho Kim,Hyun Jae Kang,Min Woo
Lee,Hyoung Hwan Roh
申请号：US14881797申请日：20151013公开号：US09900053B2公开日：20180220
专利附图：
摘要：A near-field communication (NFC) card reader may include a monitor configuredto 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 themagnetic field and output a gain control signal; a signal restoration unit configured toreceive a carrier signal and a data signal that overlaps with the carrier signal via theantenna, and restore the data signal from the received signals; and a variable-gainamplifier configured to amplify the data signal restored by the signal restoration unitaccording to the gain control signal.
申请人：Jun Ho Kim,Hyun Jae Kang,Min Woo Lee,Hyoung Hwan Roh
地址：Yongin-si KR,Seoul KR,Seoul KR,Seoul KR
国籍：KR,KR,KR,KR
代理机构：Harness, Dickey & Pierce, P.L.C.
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