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    NEAR-FIELD COMMUNICATION CIRCUIT AND OPERATION METHOD OF THE SAME
    1.
    发明申请
    NEAR-FIELD COMMUNICATION CIRCUIT AND OPERATION METHOD OF THE SAME 审中-公开

    公开(公告)号：US20200169300A1

    公开(公告)日：2020-05-28

    申请号：US16654980

    申请日：2019-10-16

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： BYEONG-TAEK MOON ,  JUN-HO KIM ,  YOUNG-JOO LEE

    IPC: H04B5/02 ,  H04B5/00 ,  H03K5/135 ,  H03L7/081 ,  H04W4/80

    Abstract: A near-field communication (NFC) circuit includes a transmitter that generates a transmission signal based on a reference clock signal and transmits the transmission signal through an antenna; a clock recovery circuit that receives a detection signal through the antenna responsive to the transmission signal and recovers a recovered clock signal from the detection signal; a phase detector that detects a phase change of the recovered clock signal; and a controller that determines, based on the phase change of the recovered clock signal, whether an NFC tag external to the NFC circuit is located within a communication range of the NFC circuit.

    DEMODULATOR FOR NEAR FIELD COMMUNICATION, NEAR FIELD COMMUNICATION DEVICE, AND ELECTRONIC DEVICE HAVING THE SAME
    2.
    发明申请
    DEMODULATOR FOR NEAR FIELD COMMUNICATION, NEAR FIELD COMMUNICATION DEVICE, AND ELECTRONIC DEVICE HAVING THE SAME 有权
    用于近场通信的解调器，近场通信设备和具有该通信设备的电子设备

    公开(公告)号：US20170019152A1

    公开(公告)日：2017-01-19

    申请号：US15184314

    申请日：2016-06-16

    Applicant: SAMSUNG ELECTRONICS CO., LTD.

    Inventor： JUN-HO KIM ,  YOUNG-JOO LEE ,  JONG-PIL CHO ,  JIN-WOO KIM

    IPC: H04B5/00 ,  H04B1/16 ,  H04L27/06

    CPC classification number: H04B5/0031 ,  H04B1/16 ,  H04L27/06

    Abstract: A demodulator for a near field communication (NFC) includes a first rectifier, a shifting rectifier, a field monitor and an edge detector. The first rectifier receives an antenna voltage through a first power terminal and a second power terminal, rectifies the antenna voltage and provides a first rectified signal to a first node. The shifting rectifier is enabled in response to an enable signal, receives the antenna voltage through the first power terminal and the second power terminal, increases a direct current (DC) level of the antenna voltage, rectifies the increased DC-level antenna voltage and provides a shifted rectified signal to the first node. The field monitor receives the antenna voltage through the first power terminal and the second power terminal, monitors a magnitude of the antenna voltage and generates the enable signal which is activated when the magnitude is smaller than a reference value.

    Abstract translation: 用于近场通信（NFC）的解调器包括第一整流器，变换整流器，场监视器和边缘检测器。 第一整流器通过第一电源端子和第二电源端子接收天线电压，对天线电压进行整流，并向第一节点提供第一整流信号。 移位整流器响应于使能信号被使能，通过第一电源端子和第二电源端子接收天线电压，增加天线电压的直流（DC）电平，整流增加的直流电平天线电压并提供 移位的整流信号到第一个节点。 现场监视器通过第一电源端子和第二电源端子接收天线电压，监视天线电压的幅度，并产生当幅度小于参考值时被激活的使能信号。

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