发明授权
- 专利标题: SYSTEM AND METHOD FOR SELECTIVELY READING RFID DEVICES
- 专利标题(中): 系统和方法选择读出RFID设备
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申请号: EP05725075.5申请日: 2005-03-09
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公开(公告)号: EP1738302B1公开(公告)日: 2007-11-28
- 发明人: FORSTER, Ian, J.
- 申请人: AVERY DENNISON CORPORATION
- 申请人地址: 150 North Orange Grove Boulevard Pasadena, CA 91103 US
- 专利权人: AVERY DENNISON CORPORATION
- 当前专利权人: AVERY DENNISON CORPORATION
- 当前专利权人地址: 150 North Orange Grove Boulevard Pasadena, CA 91103 US
- 代理机构: Müller-Boré & Partner Patentanwälte
- 优先权: US807954 20040324
- 国际公布: WO2005104023 20051103
- 主分类号: G06K19/07
- IPC分类号: G06K19/07 ; G06K7/00
摘要:
A radio frequency identification (RFID) device detection system includes an RFID device reader configured to detect RFID devices within a predetermined designated area, and two or more jamming signal transmitters configured to prevent the RFID device reader from detecting and reading devices outside of the designated area. The jamming signal transmitters may include a pair of low-frequency field generator loops driven out of phase with one another. RFID devices for use with the detection system may have a pair of antennas, one for detection by the RFID reading system, and another antenna for use in receiving signals from the jamming signal transmitters, in order to prevent communication with a wireless communication device such as an RFID chip, to which the antennas are coupled. The two antennas may be coupled to the RFID chip in parallel, with the antennas each coupled to the same contacts of the RFID chip.
公开/授权文献
- EP1738302A1 SYSTEM AND METHOD FOR SELECTIVELY READING RFID DEVICES 公开/授权日:2007-01-03
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