SEAMLESS RFID TAG SECURITY SYSTEM
    11.
    发明申请
    SEAMLESS RFID TAG SECURITY SYSTEM 审中-公开
    无缝RFID标签安全系统

    公开(公告)号:US20070206797A1

    公开(公告)日:2007-09-06

    申请号:US11307976

    申请日:2006-03-01

    IPC分类号: H04K1/00

    摘要: A Radio Frequency Identification (RFID) security system having a client, that includes a computerized system, at least one RFID tag, and a RFID reader. The computerized system and RFID reader employ a first security protocol and the RFID reader and RFID tags employ a second security protocol for communications. The security protocols permit encryption and/or authentication, and use either the same key exchange algorithms, the same encryption algorithms, and/or related keys to provide seamless communications within the RFID security system.

    摘要翻译: 具有客户端的射频识别(RFID)安全系统,其包括计算机化系统,至少一个RFID标签和RFID读取器。 计算机化系统和RFID读取器采用第一安全协议,并且RFID读取器和RFID标签采用用于通信的第二安全协议。 安全协议允许加密和/或认证,并且使用相同的密钥交换算法,相同的加密算法和/或相关密钥来提供RFID安全系统内的无缝通信。

    Quarter wave phase shifted diode detector circuit
    12.
    发明申请
    Quarter wave phase shifted diode detector circuit 有权
    四分之一波相位二极管检测电路

    公开(公告)号:US20070182558A1

    公开(公告)日:2007-08-09

    申请号:US11513667

    申请日:2006-08-31

    IPC分类号: G08B13/14 H04B1/38

    摘要: A phase shifting diode detector system for an RFID reader. Quarter-wave delay circuitry is coupled between a forward transmitted signal of the RFID reader applied at a first end of the delay circuitry, and a reflected signal returning from an RFID tag applied at a second end of the delay circuitry. The system includes a pair of diode detector bridges, each comprising a series-coupled diode pair configured such that diode polarities in each bridge are reversed relative to the output thereof, to produce opposite rectified signal output polarities. An input to each of the bridges is capacitively coupled, from the junction between each said diode pair, to a respective opposite end of the delay circuitry.

    摘要翻译: 一种用于RFID读取器的相移二极管检测器系统。 四分之一波延迟电路耦合在延迟电路的第一端处应用的RFID读取器的前向发射信号和从在延迟电路的第二端施加的RFID标签返回的反射信号。 该系统包括一对二极管检测器桥,每个二极管检测器桥包括串联耦合二极管对,其配置为使得每个桥中的二极管极性相对于其输出反转,以产生相反的整流信号输出极性。 每个桥接器的输入端从每个所述二极管对之间的接点电容耦合到延迟电路的相应的相对端。

    Configurable RFID reader
    13.
    发明申请
    Configurable RFID reader 审中-公开
    可配置RFID读写器

    公开(公告)号:US20060238305A1

    公开(公告)日:2006-10-26

    申请号:US11301770

    申请日:2005-12-13

    IPC分类号: H04Q5/22

    CPC分类号: G06K7/0008

    摘要: Systems and methods for configuring a RFID tag reader based upon one or more aspects of an environment of the RFID tag reader are disclosed. In one embodiment, a tag reader is deployed into an environment that includes readable RFID tags capable of storing dynamic data, and a characteristic of the environment of the tag reader is identified. Based upon the identified characteristic, the configuration of the tag reader is adjusted. In variations, the tag reader is configurable based upon information received from RFID tags. In another embodiment, a configurable RFID tag reader includes a processing portion that sends a first signal to each of a plurality of RFID tags. The processing portion receives information from at least one of the plurality of RFID tags, and adjusts a configuration of the RFID tag reader based upon at least a portion of the information.

    摘要翻译: 公开了基于RFID标签读取器的环境的一个或多个方面来配置RFID标签读取器的系统和方法。 在一个实施例中,标签读取器被部署到包括能够存储动态数据的可读RFID标签的环境中,并且识别标签读取器的环境的特性。 基于所识别的特征,调整标签读取器的配置。 在变型中,标签读取器可基于从RFID标签接收的信息来配置。 在另一实施例中,可配置RFID标签读取器包括向第一RFID标签中的每一个发送第一信号的处理部分。 所述处理部分从所述多个RFID标签中的至少一个接收信息,并且基于所述信息的至少一部分来调整所述RFID标签读取器的配置。