RFID READER CANCELLING LEAKAGE SIGNAL
    1.
    发明申请
    RFID READER CANCELLING LEAKAGE SIGNAL 有权
    RFID读取器取消泄漏信号

    公开(公告)号:US20090015378A1

    公开(公告)日:2009-01-15

    申请号:US12170723

    申请日:2008-07-10

    IPC分类号: H04Q5/22

    摘要: A radio frequency identification (RFID) recorder for cancelling a leakage signal includes a digital unit calculating and storing an amplitude and a phase of the leakage signal, and a leakage cancellation circuit generating a leakage cancellation signal to cancel the leakage signal in response to a control of the digital unit.

    摘要翻译: 用于消除泄漏信号的射频识别(RFID)记录器包括计算和存储泄漏信号的振幅和相位的数字单元,以及产生泄漏消除信号的泄漏消除电路,以响应于控制来抵消泄漏信号 的数字单元。

    RFID reader cancelling leakage signal
    2.
    发明授权
    RFID reader cancelling leakage signal 有权
    RFID读写器取消泄漏信号

    公开(公告)号:US08410905B2

    公开(公告)日:2013-04-02

    申请号:US12170723

    申请日:2008-07-10

    IPC分类号: H04Q5/22

    摘要: A radio frequency identification (RFID) recorder for cancelling a leakage signal includes a digital unit calculating and storing an amplitude and a phase of the leakage signal, and a leakage cancellation circuit generating a leakage cancellation signal to cancel the leakage signal in response to a control of the digital unit.

    摘要翻译: 用于消除泄漏信号的射频识别(RFID)记录器包括计算和存储泄漏信号的振幅和相位的数字单元,以及产生泄漏消除信号的泄漏消除电路,以响应于控制来抵消泄漏信号 的数字单元。

    RFID reader and RF transmission method thereof
    3.
    发明授权
    RFID reader and RF transmission method thereof 有权
    RFID阅读器及其RF传输方法

    公开(公告)号:US08265570B2

    公开(公告)日:2012-09-11

    申请号:US12204985

    申请日:2008-09-05

    IPC分类号: H04B1/44

    摘要: A Radio Frequency (RF) transmission method of a Radio Frequency Identification (RFID) reader using a plurality of channels is provided. The method includes: selecting at least part of the plurality of channels, measuring an RF power of each of the selected channels, determining a transmission environment of the RF according to a measurement determination, and modulating an RF signal according to the determined transmission environment.

    摘要翻译: 提供了使用多个通道的射频识别(RFID)读取器的射频(RF)传输方法。 该方法包括:选择多个信道的至少一部分,测量每个所选信道的RF功率,根据测量确定确定RF的传输环境,以及根据确定的传输环境调制RF信号。

    RFID READER AND RF TRANSMISSION METHOD THEREOF
    4.
    发明申请
    RFID READER AND RF TRANSMISSION METHOD THEREOF 有权
    RFID读写器和射频发射方法

    公开(公告)号:US20090066480A1

    公开(公告)日:2009-03-12

    申请号:US12204985

    申请日:2008-09-05

    IPC分类号: H04Q5/22

    摘要: A Radio Frequency (RF) transmission method of a Radio Frequency Identification (RFID) reader using a plurality of channels is provided. The method includes: selecting at least part of the plurality of channels, measuring an RF power of each of the selected channels, determining a transmission environment of the RF according to a measurement determination, and modulating an RF signal according to the determined transmission environment.

    摘要翻译: 提供了使用多个通道的射频识别(RFID)读取器的射频(RF)传输方法。 该方法包括:选择多个信道的至少一部分,测量每个所选信道的RF功率,根据测量确定确定RF的传输环境,以及根据确定的传输环境调制RF信号。

    RFID READER COMPENSATING LEAKAGE SIGNAL AND COMPENSATING METHOD THEREOF
    7.
    发明申请
    RFID READER COMPENSATING LEAKAGE SIGNAL AND COMPENSATING METHOD THEREOF 审中-公开
    RFID读写器补偿泄漏信号及其补偿方法

    公开(公告)号:US20090068957A1

    公开(公告)日:2009-03-12

    申请号:US12205401

    申请日:2008-09-05

    IPC分类号: H04B17/00

    摘要: A radio frequency identification (RFID) reader includes a transmitter generating a transmission signal for transmission to a tag, a receiver receiving a response signal from the tag, a leakage compensator compensating a leakage signal leaked from the transmitter to the receiver in response to a leakage control signal, and a control unit performing a leakage test operation by applying a test signal to the transmitter, and calculating and storing a leakage parameter for generating the leakage control signal using a level difference of the test signal and a level difference of a test leakage signal leaked to the receiver.

    摘要翻译: 射频识别(RFID)读取器包括:发射器,产生用于传输到标签的传输信号,接收器接收来自标签的响应信号;泄漏补偿器,用于响应于泄漏而补偿从发射器泄漏到接收器的泄漏信号 控制信号,以及通过向发送机施加测试信号来进行泄漏测试操作的控制单元,并且使用测试信号的电平差和测试泄漏的电平差来计算和存储用于产生泄漏控制信号的泄漏参数 信号泄漏到接收器。

    Geographical information sypply system and method using RFID, and traffic information supply system using RFID
    8.
    发明申请
    Geographical information sypply system and method using RFID, and traffic information supply system using RFID 有权
    使用RFID的地理信息系统和方法,以及使用RFID的交通信息供应系统

    公开(公告)号:US20060017587A1

    公开(公告)日:2006-01-26

    申请号:US11185814

    申请日:2005-07-21

    IPC分类号: G08G1/123

    CPC分类号: G08G1/0104

    摘要: A system and method for providing geographical information to a driver of a vehicle using radio frequency identification (RFID). Also provided is a traffic information supply system using RFID. The geographical information supply system includes a reader provided near a road which outputs a first signal and receives a second signal generated in response to the first signal; a tag that senses the first signal, converts information on a destination into the second signal in response to the first signal, and outputs the second signal. Also included is a first control unit which extracts and outputs the destination information from the second signal, receives geographical information to the destination, and supplies the geographical information to a driver. A server generates the geographical information corresponding to the destination information and outputs the generated geographical information to the first control unit.

    摘要翻译: 一种使用射频识别(RFID)向车辆的驾驶员提供地理信息的系统和方法。 还提供了使用RFID的交通信息供应系统。 所述地理信息提供系统包括在道路附近提供的读取器,其输出第一信号并接收响应于所述第一信号而生成的第二信号; 感测第一信号的标签,响应于第一信号将目的地信息转换为第二信号,并输出第二信号。 还包括第一控制单元,其从第二信号中提取并输出目的地信息,将地理信息接收到目的地,并将地理信息提供给驾驶员。 服务器生成对应于目的地信息的地理信息,并将产生的地理信息输出到第一控制单元。