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    • 1. 发明申请
    • METHOD AND APPARATUS FOR READING RADIO FREQUENCY IDENTIFICATION TAGS
    • 用于读取无线电频率识别标签的方法和装置
    • US20080122627A1
    • 2008-05-29
    • US11674677
    • 2007-02-14
    • Yun-Shen ChangYa-Ping ChenJiunn-Tsair ChenZe-Yao Chang
    • Yun-Shen ChangYa-Ping ChenJiunn-Tsair ChenZe-Yao Chang
    • G08B13/14
    • G06K7/0008G06K7/10079G08B13/2485
    • A method and an apparatus for reading radio frequency identification (RFID) tags are provided. First, an omni-directional radio frequency signal is emitted out to omni-directionally scan RFID tags. Then, a radio frequency signal composed of P beams is emitted directed to P specific directions, and a spatial matched filter processing is performed to read the RFID tags in P specific directions, wherein P is an integer larger than or equal to 1. In order to scan all the directions, the method adjusts angles of P specific directions and repeats the steps of emitting beams and filtering, and thereby reading the RFID tags in all the directions. Therefore, the method and apparatus of the present invention can simultaneously read a plurality of RFID tags and enlarge the scan range and effective read rate without increasing the transmit power.
    • 提供了一种用于读取射频识别(RFID)标签的方法和装置。 首先,发射全向射频信号以全方位扫描RFID标签。 然后,将由P个波束组成的射频信号发射到P个特定方向,并且执行空间匹配滤波处理以沿P个特定方向读取RFID标签,其中P是大于或等于1的整数。按顺序 扫描所有方向,该方法调整P特定方向的角度,并重复发射光束和滤波的步骤,从而在所有方向上读取RFID标签。 因此,本发明的方法和装置可以同时读取多个RFID标签,并且在不增加发送功率的情况下扩大扫描范围和有效读取速率。
    • 10. 发明申请
    • RADIO FREQUENCY IDENTIFICATION DEVICES
    • 无线电频率识别装置
    • US20080266103A1
    • 2008-10-30
    • US11742167
    • 2007-04-30
    • Ya-Ping ChenShao-Chang Chang
    • Ya-Ping ChenShao-Chang Chang
    • G08B1/08
    • G06K7/0008
    • A radio frequency identification device comprising a first antenna configured to receive and transmit radio frequency identification signals, the first antenna being configured to transmit and receive the signals at a first frequency, a controller configured to provide data for communication, a first mixer coupled with the controller and the first antenna, the first mixer being configured to modulate the data from the controller with a first signal having the first frequency, and a second mixer coupled with the controller and the first antenna, the second mixer being configured to demodulate received signals from the first antenna with a second signal having the first frequency.
    • 一种射频识别装置,包括被配置为接收和发送射频识别信号的第一天线,所述第一天线被配置为以第一频率发射和接收信号,被配置为提供用于通信的数据的控制器,与所述第一天线 控制器和第一天线,第一混频器被配置为利用具有第一频率的第一信号来调制来自控制器的数据,以及与控制器和第一天线耦合的第二混频器,第二混频器被配置为解调来自 所述第一天线具有具有所述第一频率的第二信号。