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181 条记录 (耗时 0.054 秒)

    Radio frequency identification architecture
    41.
    发明授权
    Radio frequency identification architecture 有权
    射频识别架构

    公开(公告)号：US07965189B2

    公开(公告)日：2011-06-21

    申请号：US11785215

    申请日：2007-04-16

    申请人： Wayne E. Shanks ,  William R. Bandy ,  Michael R. Arneson ,  Kevin J. Powell

    发明人： Wayne E. Shanks ,  William R. Bandy ,  Michael R. Arneson ,  Kevin J. Powell

    IPC分类号： G08B13/14

    CPC分类号： G06K19/07749 ,  G06K7/0008 ,  G06K7/10039 ,  G06K7/10069 ,  G06K7/10108 ,  G06K7/10356 ,  G06K17/00 ,  G06K19/0713 ,  G06K19/0723 ,  G06K19/07767 ,  G08B13/2485 ,  G11C5/142 ,  H04L7/0331

    摘要： A radio frequency identification (RFID) architecture is described. RFID tags are interrogated by a reader, which may be located in a network of readers. The reader transmits symbols to the tags. Tags respond to the interrogations with symbols that each represent one or more bits of data. An RFID tag includes an antenna pad, a receiver, a state machine, and a modulator. The receiver is coupled to the antenna pad. The receiver receives a symbol from the antenna pad and outputs a received signal. The state machine is configured to determine a response symbol from the received signal and an operating state of the tag. The modulator is coupled to the antenna pad. The modulator is configured to backscatter modulate the received symbol with the response symbol. The modulator is configured to output the backscatter modulated symbol to the antenna pad.

    摘要翻译： 描述射频识别（RFID）架构。 RFID标签被读取器询问，读取器可以位于读取器网络中。 读卡器将符号发送到标签。 标签响应具有每个表示一个或多个数据位的符号的询问。 RFID标签包括天线垫，接收器，状态机和调制器。 接收器耦合到天线焊盘。 接收机从天线焊盘接收符号并输出接收信号。 状态机被配置为从接收到的信号和标签的操作状态确定响应符号。 调制器耦合到天线垫。 调制器被配置为使用响应符号对所接收的符号进行后向散射调制。 调制器被配置为将后向散射调制符号输出到天线焊盘。

    Tracking system and methods thereof
    42.
    发明授权
    Tracking system and methods thereof 有权
    跟踪系统及其方法

    公开(公告)号：US07626499B2

    公开(公告)日：2009-12-01

    申请号：US11519245

    申请日：2006-09-12

    申请人： Gregory W. Burneske ,  Fred F. Schleifer

    发明人： Gregory W. Burneske ,  Fred F. Schleifer

    IPC分类号： G08B1/08

    CPC分类号： G01C21/005 ,  G08B13/2462 ,  G08B13/2485

    摘要： The present invention relates generally to tracking systems and methods for monitoring the location of an asset or group of assets. In particular, the present invention provides systems for monitoring the location of a large group of assets. Furthermore, the present invention provides systems and methods for identifying an asset within a group of assets.

    摘要翻译： 本发明一般涉及用于监视资产或资产组的位置的跟踪系统和方法。 特别地，本发明提供了用于监视大量资产的位置的系统。 此外，本发明提供用于识别一组资产内的资产的系统和方法。

    System for detecting radio-frequency identification tags
    44.
    发明授权
    System for detecting radio-frequency identification tags 失效
    用于检测射频识别标签的系统

    公开(公告)号：US07405663B2

    公开(公告)日：2008-07-29

    申请号：US11539716

    申请日：2006-10-09

    申请人： Seth A. Lieffort ,  Edward D. Goff ,  Ronald D. Jesme ,  Thomas C. Mercer

    发明人： Seth A. Lieffort ,  Edward D. Goff ,  Ronald D. Jesme ,  Thomas C. Mercer

    IPC分类号： G08B13/14 ,  H04Q17/62

    CPC分类号： G06K17/00 ,  G06K7/10039 ,  G06K2017/0045 ,  G08B13/2462 ,  G08B13/2474 ,  G08B13/248 ,  G08B13/2485 ,  G08B13/2488

    摘要： Techniques for detecting radio-frequency identification (RFID) tags are disclosed. For example, an exit control system is described that detects unauthorized removal of articles from a protected facility. A series of antennas are setup to produce interrogation corridors located near the exit of the protected area. RFID tags are attached to the articles to be protected. Each tag includes information that uniquely identifies the article to which it is affixed and status information as to whether the articles removal from the facility is authorized. The RF reader outputs RF signals through the antennas to create electromagnetic fields within the interrogation corridors. The reader outputs RF power from a single port to the multiple antennas via a splitter/combiner. In this way, a single RF reader with only one transmitter/receiver port simultaneously interrogates multiple antennas. A variety of techniques are described by which the reader can detect the removal of an unauthorized article.

    摘要翻译： 公开了用于检测射频识别（RFID）标签的技术。 例如，描述了一种检测来自受保护设施的未经授权的物品移除的出口控制系统。 设置一系列天线以产生位于保护区出口附近的询问走廊。 RFID标签附着在要保护的物品上。 每个标签包括唯一标识其所附文章的信息以及关于从该设施移除的文章是否被授权的状态信息。 RF读取器通过天线输出RF信号，以在询问走廊内创建电磁场。 读取器通过分离器/组合器将单个端口的RF功率输出到多个天线。 以这种方式，只有一个发射机/接收机端口的单个RF读取器同时询问多个天线。 描述了各种技术，读者可以通过该技术检测未经授权的文章的移除。

    Rfid Tag Theft Prevention Screening System, Tag And Base Station Therefor
    45.
    发明申请
    Rfid Tag Theft Prevention Screening System, Tag And Base Station Therefor 审中-公开
    Rfid标签防盗屏蔽系统，标签和基站

    公开(公告)号：US20070296580A1

    公开(公告)日：2007-12-27

    申请号：US10567775

    申请日：2004-08-02

    申请人： Pierre Raimbault

    发明人： Pierre Raimbault

    IPC分类号： G06K7/00 ,  G06K19/077 ,  G07G1/00

    CPC分类号： G08B13/2485 ,  G06K7/10356 ,  G07G1/0054 ,  G07G3/003 ,  G08B13/2482

    摘要： A method is provided for communicating between an electronic tag and at least two base stations, the electronic tag including a memory for storing a code having a plurality of levels, an apparatus for reading out a series of code values, at least one antenna for communicating with a base station, and a controller for responding to a read query from a base station by causing the read-out apparatus to read out the code values at at least one level, causing an antenna to transmit back a response signal and altering the code in the memory in response to a write query from a base station. In a write step, the electronic tag passes close to the first base station, and a base station proximity value is written into a predetermined code level. A transmission step is carried out when the electronic tag passes close to the second base station.

    摘要翻译： 提供了一种用于在电子标签与至少两个基站之间进行通信的方法，该电子标签包括用于存储具有多个级别的代码的存储器，用于读出一系列代码值的装置，至少一个用于通信的天线 基站，以及控制器，用于通过使读出装置在至少一个级别读取代码值来响应来自基站的读取查询，使得天线发送回应答信号并改变代码 在存储器中响应于来自基站的写查询。 在写入步骤中，电子标签靠近第一基站，并且将基站接近值写入预定的代码级。 当电子标签靠近第二基站时，执行发送步骤。

    Efficient charge pump apparatus and method
    47.
    发明申请
    Efficient charge pump apparatus and method 有权
    高效电荷泵装置及方法

    公开(公告)号：US20060202828A1

    公开(公告)日：2006-09-14

    申请号：US11434894

    申请日：2006-05-17

    申请人： Wayne Shanks ,  William Bandy ,  Michael Arneson ,  Kevin Powell

    发明人： Wayne Shanks ,  William Bandy ,  Michael Arneson ,  Kevin Powell

    IPC分类号： G08B13/14

    CPC分类号： G06K19/07749 ,  G06K7/0008 ,  G06K7/10039 ,  G06K7/10069 ,  G06K7/10108 ,  G06K7/10356 ,  G06K17/00 ,  G06K19/0713 ,  G06K19/0723 ,  G06K19/07767 ,  G08B13/2485 ,  G11C5/142 ,  H04L7/0331

    摘要： An identification (ID) tag includes a substrate having an input capable of receiving a high frequency signal. For instance, the high frequency signal can be a radio frequency (RF) signal that is generated as part of a radio frequency (RF) ID system. A first charge pump is coupled to the input and is configured to convert the high frequency signal to a substantially direct current (DC) voltage. A data recovery circuit is coupled to the input and is capable of recovering data from the high frequency signal. A back scatter switch is coupled to the input and is capable of modifying an impedance of the input, responsive to a control signal. A state machine is disposed on the substrate and is responsive to the data recovered by the second charge pump, where the state machine is capable of generating the control signal for the back scatter switch in response to the data. The DC voltage from the first charge pump is capable of providing a voltage supply for at least one of the data recovery circuit, the back scatter switch, and the state machine. The data recovery circuit includes a second charge pump that is capable of operating on the high frequency signal simultaneously with the first charge pump. In other words, the first charge pump can generate the supply voltage for the ID tag from the high frequency signal, while the second charge pump simultaneously retrieves the data from the high frequency signal. The first charge pump also includes a means for limiting the amplitude of the DC voltage by reducing the charge pump efficiency, once a threshold voltage is reached.

    摘要翻译： 识别（ID）标签包括具有能够接收高频信号的输入的基板。 例如，高频信号可以是作为射频（RF）ID系统的一部分而生成的射频（RF）信号。 第一电荷泵耦合到输入端并被配置为将高频信号转换成基本上直流（DC）的电压。 数据恢复电路耦合到输入端并且能够从高频信号中恢复数据。 背散射开关耦合到输入端，并且能够响应于控制信号来修改输入的阻抗。 状态机设置在基板上并且响应于由第二电荷泵恢复的数据，其中状态机能够响应于数据而产生用于背散射开关的控制信号。 来自第一电荷泵的DC电压能够为数据恢复电路，后向散射开关和状态机中的至少一个提供电压源。 数据恢复电路包括能够与第一电荷泵同时对高频信号进行操作的第二电荷泵。 换句话说，第一电荷泵可以从高频信号产生ID标签的电源电压，而第二电荷泵同时从高频信号中检索数据。 第一电荷泵还包括一旦达到阈值电压，则通过降低电荷泵效率来限制直流电压的振幅的装置。