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    • 9. 发明申请
    • RFID tag reader/writer
    • RFID标签读写器
    • US20060220859A1
    • 2006-10-05
    • US11350965
    • 2006-02-10
    • Takuya NagaiKazunari TakiTsuyoshi Ohashi
    • Takuya NagaiKazunari TakiTsuyoshi Ohashi
    • G08B13/14
    • B41J3/50G06K7/0008G06K7/10069G06K17/0025G06K19/0723H04B5/0056H04B5/0062H04B5/02
    • An RFID tag reader/writer having a high degree of stability of communication with only a desired RFID tag. The frequency of a carrier wave to be transmitted from the RFID tag reader/writer is set on the basis of a resonance frequency of an antenna of the RFID tag located within a predetermined nearby communication area, which resonance frequency changes due to mutual coupling between the antenna of the RFID tag and an antenna of the RFID tag reader/writer. According to this setting, the RFID tag located within the nearby communication area has a high degree of sensitivity, and the RFID tag located outside the nearby communication area has a low degree of sensitivity, so that it is possible to effectively prevent an interference between the communication of the RFID tag reader/writer with the selected RFID tag and the communication of the reader/writer with the other or non-selected RFID tag.
    • RFID标签读取器/写入器,其仅具有期望的RFID标签的高度的通信稳定性。 基于位于规定的附近通信区域内的RFID标签的天线的共振频率来设定从RFID标签读写器发送的载波的频率,该谐振频率由于 RFID标签的天线和RFID标签读取器/写入器的天线。 根据该设定,位于附近通信区域内的RFID标签具有高灵敏度,并且位于附近通信区域外的RFID标签具有低灵敏度,因此可以有效地防止 RFID标签读取器/写入器与所选择的RFID标签的通信以及读取器/写入器与另一个或未选择的RFID标签的通信。
    • 10. 发明授权
    • RFID tag reader/writer
    • RFID标签读写器
    • US08111137B2
    • 2012-02-07
    • US11350965
    • 2006-02-10
    • Takuya NagaiKazunari TakiTsuyoshi Ohashi
    • Takuya NagaiKazunari TakiTsuyoshi Ohashi
    • H04Q5/22G08B13/14
    • B41J3/50G06K7/0008G06K7/10069G06K17/0025G06K19/0723H04B5/0056H04B5/0062H04B5/02
    • An RFID tag reader/writer having a high degree of stability of communication with only a desired RFID tag. The frequency of a carrier wave to be transmitted from the RFID tag reader/writer is set on the basis of a resonance frequency of an antenna of the RFID tag located within a predetermined nearby communication area, which resonance frequency changes due to mutual coupling between the antenna of the RFID tag and an antenna of the RFID tag reader/writer. According to this setting, the RFID tag located within the nearby communication area has a high degree of sensitivity, and the RFID tag located outside the nearby communication area has a low degree of sensitivity, so that it is possible to effectively prevent an interference between the communication of the RFID tag reader/writer with the selected RFID tag and the communication of the reader/writer with the other or non-selected RFID tag.
    • RFID标签读取器/写入器,其仅具有期望的RFID标签的高度的通信稳定性。 基于位于规定的附近通信区域内的RFID标签的天线的共振频率来设定从RFID标签读写器发送的载波的频率,该谐振频率由于 RFID标签的天线和RFID标签读取器/写入器的天线。 根据该设定,位于附近通信区域内的RFID标签具有高灵敏度,并且位于附近通信区域外的RFID标签具有低灵敏度,使得可以有效地防止 RFID标签读取器/写入器与所选择的RFID标签的通信以及读取器/写入器与另一个或未选择的RFID标签的通信。