System and method for indoor location tracking using pseudo GPS signal transmitter
    1.
    发明授权
    System and method for indoor location tracking using pseudo GPS signal transmitter 有权
    使用伪GPS信号发射机进行室内定位跟踪的系统和方法

    公开(公告)号:US08791857B2

    公开(公告)日:2014-07-29

    申请号:US13253580

    申请日:2011-10-05

    IPC分类号: G01S19/11

    CPC分类号: G01S19/11

    摘要: To track the location of a terminal in an indoor space by using a pseudo GPS signal transmitter, a GPS signal sent from an artificial satellite is received, and a clock signal of the artificial satellite is extracted from the received GPS signal to perform synchronization with the artificial satellite. Once synchronization with the artificial satellite is performed, a pseudo GPS signal is generated, and the transmission time of the pseudo GPS signal is controlled. The GPS signal is sent to the terminal located in the indoor space by a plurality of transmitting antennas based on the controlled transmission time, thereby enabling the terminal located in the indoor space to track its location.

    摘要翻译: 为了通过使用伪GPS信号发送器在室内追踪终端的位置,接收从人造卫星发送的GPS信号,并从接收到的GPS信号中提取人造卫星的时钟信号,以与 卫星。 一旦执行与人造卫星的同步,就产生伪GPS信号,并且控制伪GPS信号的发送时间。 基于受控的发送时间,通过多个发送天线将GPS信号发送到位于室内空间的终端,由此能够使位于室内空间的终端跟踪其位置。

    Passive RFID reader and operation control method therefor
    2.
    发明授权
    Passive RFID reader and operation control method therefor 失效
    被动RFID阅读器及其操作控制方法

    公开(公告)号:US08653946B2

    公开(公告)日:2014-02-18

    申请号:US11746306

    申请日:2007-05-09

    IPC分类号: H04Q5/22

    摘要: Provided is a Radio Frequency Identification (RFID) reader that can minimize collision among RFID readers in an environment where there are a plurality of RFID readers within a limited operating environment by making each RFID reader select a channel at different delay time based on a random value, and a method for controlling operation of the RFID reader. The RFID reader includes a random value generating unit; a reader control unit for adaptively deciding a counter value for generating the random value; an anti-collision unit for preventing collision among a plurality of tags; a reader transmitting unit for generating a reader command message determined by the anti-collision unit, encoding the reader command message, and modulating the reader command message; a reader receiving unit for demodulating and decoding a tag signal; and a channel operation control unit for selecting a channel to be used for the communication with the tag.

    摘要翻译: 提供了一种射频识别(RFID)读取器,其可以在有限操作环境中存在多个RFID读取器的环境中最小化RFID读取器之间的冲突,使得每个RFID读取器基于随机值在不同的延迟时间选择信道 以及用于控制RFID读取器的操作的方法。 RFID读取器包括随机值生成单元; 读取器控制单元,用于自适应地确定用于生成随机值的计数器值; 用于防止多个标签之间的碰撞的防碰撞单元; 读取器发送单元,用于生成由反冲突单元确定的读取器命令消息,对读取器命令消息进行编码,以及调制读取器命令消息; 读取器接收单元,用于解调和解码标签信号; 以及频道操作控制单元,用于选择要用于与标签进行通信的频道。

    Apparatus and method for integrated reader and tag
    7.
    发明授权
    Apparatus and method for integrated reader and tag 有权
    集成阅读器和标签的装置和方法

    公开(公告)号:US08362879B2

    公开(公告)日:2013-01-29

    申请号:US12375137

    申请日:2007-07-26

    IPC分类号: H04Q5/22 H04L12/413 G08B13/14

    摘要: Provided are a reader-tag integrated RFID apparatus and a method for controlling the same. The apparatus includes a tag unit for communicating with an external reader, and transmitting a response signal and data corresponding to a signal transmitted from the external reader to the external reader, a reader unit for selecting a channel between other reader and the reader-tag integrated RFID apparatus with a different delay time, and communicating with an external tag using a random value to minimize collision; and a controller for selectively activating one of the tag unit and the reader unit if it necessary.

    摘要翻译: 提供了一种读写器集成RFID装置及其控制方法。 该装置包括用于与外部读取器进行通信的标签单元,并将响应信号和对应于从外部读取器发送的信号的数据发送到外部读取器;读取单元,用于选择其他读取器与读取器标签之间的通道集成 具有不同延迟时间的RFID装置,并且使用随机值与外部标签通信以最小化碰撞; 以及如果需要,选择性地激活标签单元和读取器单元中的一个的控制器。

    Method for recognizing radio frequency identification tag reader and apparatus thereof
    8.
    发明授权
    Method for recognizing radio frequency identification tag reader and apparatus thereof 有权
    用于识别射频识别标签读取器的方法及其装置

    公开(公告)号:US08334755B2

    公开(公告)日:2012-12-18

    申请号:US12625228

    申请日:2009-11-24

    IPC分类号: H04Q3/00

    摘要: Provided is a method and apparatus for recognizing a radio frequency identification tag reader. In order to obtain protocol addresses of a plurality of radio frequency identification (hereinafter referred to as RFID) tag readers, a request message including a timestamp indicating a generation time is generated and transmitted, and a response message for the request message from one of the plurality of RFID readers is received. When the timestamp included in the response message satisfies a set condition, a hardware address and a protocol address of the RFID reader are extracted from the response message.

    摘要翻译: 提供了一种用于识别射频识别标签读取器的方法和装置。 为了获得多个射频识别(以下称为RFID)标签读取器的协议地址,生成并发送包括指示生成时间的时间戳的请求消息,并且从所述请求消息中的一个 接收多个RFID阅读器。 当包括在响应消息中的时间戳满足设置条件时,从响应消息中提取RFID读取器的硬件地址和协议地址。