Invention Grant
US09379784B2 NFC tag emulation mode with constant magnetic field 有权
具有恒定磁场的NFC标签仿真模式

  • Patent Title: NFC tag emulation mode with constant magnetic field
  • Patent Title (中): 具有恒定磁场的NFC标签仿真模式
  • Application No.: US14395249
    Application Date: 2013-04-23
  • Publication No.: US09379784B2
    Publication Date: 2016-06-28
  • Inventor: Achraf Dhayni
  • Applicant: ST-Ericsson SA
  • Applicant Address: CH Plan-les-Ouates
  • Assignee: ST-ERICSSON SA
  • Current Assignee: ST-ERICSSON SA
  • Current Assignee Address: CH Plan-les-Ouates
  • Agency: Patent Portfolio Builders PLLC
  • Priority: EP12305507 20120507
  • International Application: PCT/EP2013/058397 WO 20130423
  • International Announcement: WO2013/167375 WO 20131114
  • Main IPC: H04B5/00
  • IPC: H04B5/00 G06K7/10 G06K7/00
NFC tag emulation mode with constant magnetic field
Abstract:
A method for performing electromagnetic induction communication enables transmitting modulation data between communication devices. The method includes coupling a first antenna of a first communication device and a second antenna of a second communication device, generating a magnetic field by supplying a first current through the first antenna, and modulating the magnetic field according to the modulation data. The first current is regulated so as to be substantially constant, by introducing a regulating current, which is function of the magnetic field. The first communication device determines the modulation data from the regulating current.
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