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    SYSTEMS, METHODS AND APPARATUS FOR DETERMINING DIRECTION OF MOTION OF A RADIO FREQUENCY IDENTIFICATION (RFID) TAG
    3.
    发明申请
    SYSTEMS, METHODS AND APPARATUS FOR DETERMINING DIRECTION OF MOTION OF A RADIO FREQUENCY IDENTIFICATION (RFID) TAG 审中-公开
    用于确定无线电频率识别（RFID）标签的运动方向的系统，方法和装置

    公开(公告)号：US20110050421A1

    公开(公告)日：2011-03-03

    申请号：US12549459

    申请日：2009-08-28

    申请人： Mark Duron ,  Benjamin Bekritsky ,  David Goren ,  Miklos Stern

    发明人： Mark Duron ,  Benjamin Bekritsky ,  David Goren ,  Miklos Stern

    IPC分类号： G08B13/14

    CPC分类号： G06K7/0008 ,  G01S13/589 ,  G01S13/82 ,  G01V15/00 ,  G06K7/10079

    摘要： The present disclosure describes a system, methods and apparatus for determining a direction of motion of an RFID tag. An RFID reader is provided that includes an antenna that is tilted at a tilt angle with respect to a detection path. Response signals from the RFID tag are received at the antenna at different times, and an RSSI sample of each response signal is measured. Based on the RSSI samples, an RSSI/time data point is generated for each of the RSSI samples. Each RSSI/time data point defines a measured RSSI value for a particular RSSI sample versus a time that particular RSSI sample was measured. Based on the plurality of RSSI/time data points, the direction of motion of the RFID tag can be determined.

    摘要翻译： 本公开描述了用于确定RFID标签的运动方向的系统，方法和装置。 提供RFID读取器，其包括相对于检测路径倾斜倾斜的天线。 来自RFID标签的响应信号在不同时间在天线处被接收，并且测量每个响应信号的RSSI样本。 基于RSSI样本，为每个RSSI样本生成RSSI /时间数据点。 每个RSSI /时间数据点定义特定RSSI样本的测量RSSI值与测量特定RSSI样本的时间。 基于多个RSSI /时间数据点，可以确定RFID标签的运动方向。

    Method and system for determining existence of a predetermined wireless network coverage condition in a wireless network
    4.
    发明申请
    Method and system for determining existence of a predetermined wireless network coverage condition in a wireless network 有权
    用于确定无线网络中预定无线网络覆盖状况的存在的方法和系统

    公开(公告)号：US20070025287A1

    公开(公告)日：2007-02-01

    申请号：US11191854

    申请日：2005-07-28

    申请人： David Goren ,  Vinh-Phuong Le ,  Benjamin Bekritsky ,  Guang Zeng

    发明人： David Goren ,  Vinh-Phuong Le ,  Benjamin Bekritsky ,  Guang Zeng

    IPC分类号： H04Q7/00

    CPC分类号： H04W16/18

    摘要： Described is a method for determining an existence of a predetermined wireless network coverage condition. A wireless coverage map of a wireless network is generated as a function of a location of at least one access point and a first signal data collected at a plurality of locations within the network. The first signal data includes a first signal strength of a wireless signal communicated between the at least one access point and a wireless device. A second signal data is received. The second signal data includes a second signal strength of a further wireless signal communicated between one of the at least one access point and a further wireless device. The existence of the predetermined wireless network coverage condition is determined as a function of the second signal data and the wireless coverage map.

    摘要翻译： 描述了一种用于确定预定无线网络覆盖条件的存在的方法。 根据在网络内的多个位置收集的至少一个接入点和第一信号数据的位置来生成无线网络的无线覆盖图。 第一信号数据包括在至少一个接入点和无线设备之间传送的无线信号的第一信号强度。 接收第二信号数据。 第二信号数据包括在至少一个接入点之一和另一无线设备之间传送的另一无线信号的第二信号强度。 根据第二信号数据和无线覆盖图确定预定无线网络覆盖条件的存在。

    System and method for cyclic carrier de-rotation for earliest time of arrival estimation in a wireless communications system
    5.
    发明授权
    System and method for cyclic carrier de-rotation for earliest time of arrival estimation in a wireless communications system 有权
    用于在无线通信系统中的最早到达时间的循环载波去旋转的系统和方法

    公开(公告)号：US06760592B2

    公开(公告)日：2004-07-06

    申请号：US10338621

    申请日：2003-01-07

    申请人： David Hernandez ,  David Goren ,  Benjamin Bekritsky

    发明人： David Hernandez ,  David Goren ,  Benjamin Bekritsky

    IPC分类号： H04Q720

    CPC分类号： G01S11/02 ,  G01S1/026 ,  G01S1/045 ,  G01S5/14

    摘要： The present invention relates generally to a system and method for determining the earliest time of arrival of a received signal in a wireless communications system. In particular, the present invention relates to a system and method for de-rotation of the carrier phase of a received signal to offset the effects of combining a received line-of-sight signal with various received multipath artifacts that may shift the complex phase of the received signal. The system and method of the present invention can improve the accuracy of the estimated time of arrival of a received signal by computing the time of arrival of the received signal at numerous different phase references and identifying the earliest of the computed times of arrival.

    摘要翻译： 本发明一般涉及用于确定接收到的信号在无线通信系统中的最早到达时间的系统和方法。 特别地，本发明涉及一种用于接收信号的载波相位的去旋转的系统和方法，以抵消将接收到的视线信号与各种接收的多路径伪影组合的效果， 接收信号。 本发明的系统和方法可以通过在多个不同的相位参考下计算接收到的信号的到达时间来确定所计算的到达时间的最早时间来提高接收信号的估计到达时间的精度。

    System and method for calculating battery state of charge
    6.
    发明申请
    System and method for calculating battery state of charge 有权
    用于计算电池充电状态的系统和方法

    公开(公告)号：US20080048616A1

    公开(公告)日：2008-02-28

    申请号：US11509466

    申请日：2006-08-24

    申请人： Christopher R. Paul ,  Benjamin Bekritsky ,  Joseph Cabana

    发明人： Christopher R. Paul ,  Benjamin Bekritsky ,  Joseph Cabana

    IPC分类号： H02J7/00

    CPC分类号： G01R31/3648 ,  G01R31/3624

    摘要： Described is a system and method for determining determining a present state of charge of a battery and determining a rate of change of the state of charge of the battery, the rate of change being determined based on a charge current being supplied to the battery. Then, an updated state of charge is determined based on the rate of change.

    摘要翻译： 描述了一种用于确定确定电池的当前充电状态并确定电池的充电状态的变化率的系统和方法，该变化率是基于提供给电池的充电电流确定的。 然后，基于变化率来确定更新的充电状态。

    Backscatter limited tags
    7.
    发明授权
    Backscatter limited tags 有权
    反向散射限制标签

    公开(公告)号：US08237546B2

    公开(公告)日：2012-08-07

    申请号：US11770572

    申请日：2007-06-28

    申请人： Benjamin Bekritsky ,  Randall Allen Drago ,  Ming-Hao Sun

    发明人： Benjamin Bekritsky ,  Randall Allen Drago ,  Ming-Hao Sun

    IPC分类号： H04Q5/22 ,  G08B13/14

    CPC分类号： G06K7/0008 ,  G06K19/0707 ,  G06K19/0712 ,  G06K19/07749 ,  H04Q2213/13095

    摘要： Methods and apparatuses for secure communications of confidential information are provided. In an embodiment, a method of communicating with a population of radio frequency identification tags includes transmitting a first interrogation signal, receiving a response to the first interrogation signal from at least one RFID tag at a first received signal strength including at least a portion of a first identification code, and transmitting a second interrogation signal that includes a request for confidential information, a command to transmit a response to the second interrogation signal at a secure power level, and the first identification code. In another embodiment, a method for communicating with an RFID tag includes receiving an interrogation signal that includes a request for confidential information and transmitting a response to the interrogation signal at a secure power level. The response includes the confidential information.

    摘要翻译： 提供了机密信息的安全通信的方法和装置。 在一个实施例中，与群体的射频识别标签进行通信的方法包括发送第一询问信号，以至少一个RFID标签以至少一部分的第一接收信号强度接收对第一询问信号的响应， 第一识别码，以及发送包括对机密信息的请求的第二询问信号，以安全功率级发送对第二询问信号的响应的命令和第一识别码。 在另一个实施例中，用于与RFID标签通信的方法包括：接收询问信号，该询问信号包括对机密信息的请求，并以安全功率级别发送对询问信号的响应。 答复包括机密信息。

    Method and system for determining existence of a predetermined wireless network coverage condition in a wireless network
    8.
    发明授权
    Method and system for determining existence of a predetermined wireless network coverage condition in a wireless network 有权
    用于确定无线网络中预定无线网络覆盖状况的存在的方法和系统

    公开(公告)号：US07437127B2

    公开(公告)日：2008-10-14

    申请号：US11191854

    申请日：2005-07-28

    申请人： David P. Goren ,  Vinh-Phuong Tra Le ,  Benjamin Bekritsky ,  Guang Zeng

    发明人： David P. Goren ,  Vinh-Phuong Tra Le ,  Benjamin Bekritsky ,  Guang Zeng

    IPC分类号： H04B7/00

    CPC分类号： H04W16/18

    摘要： A wireless coverage map of a wireless network is generated as a function of a location of at least one access point and a first signal data collected at a plurality of locations within the network. The first signal data includes a first signal strength of a wireless signal communicated between the at least one access point and a wireless device. A second signal data is received. The second signal data includes a second signal strength of a further wireless signal communicated between one of the at least one access point and a further wireless device. The existence of the predetermined wireless network coverage condition is determined as a function of the second signal data and the wireless coverage map.

    摘要翻译： 根据在网络内的多个位置收集的至少一个接入点和第一信号数据的位置来生成无线网络的无线覆盖图。 第一信号数据包括在至少一个接入点和无线设备之间传送的无线信号的第一信号强度。 接收第二信号数据。 第二信号数据包括在至少一个接入点之一和另一无线设备之间传送的另一无线信号的第二信号强度。 根据第二信号数据和无线覆盖图确定预定无线网络覆盖条件的存在。

    RFID tag device with temperature sensitive antenna
    9.
    发明授权
    RFID tag device with temperature sensitive antenna 有权
    具有温度敏感天线的RFID标签装置

    公开(公告)号：US08228172B2

    公开(公告)日：2012-07-24

    申请号：US12241469

    申请日：2008-09-30

    申请人： Timothy Collins ,  Andreas Schaller ,  Benjamin Bekritsky ,  Theodore Hockey

    发明人： Timothy Collins ,  Andreas Schaller ,  Benjamin Bekritsky ,  Theodore Hockey

    IPC分类号： G08B21/00

    CPC分类号： G06K19/07749 ,  G01K3/04 ,  G06K19/0717 ,  H01Q1/02 ,  H01Q1/2225

    摘要： An apparatus system, and techniques for detecting temperature change are disclosed. The system includes a temperature sensitive antenna that can be included in an RFID tag device. The antenna is associated with a temperature sensitive material that, upon being exposed to a particular temperature level over a time interval, causes at least one of a change in the resonance frequency of the antenna and change in antenna signal strength (e.g., antenna gain). An RFID reader is also provided that sends commands to the tag device and determines the existence of a temperature change based on a comparison of signal strengths received on different frequencies from the antenna.

    摘要翻译： 公开了一种装置系统和用于检测温度变化的技术。 该系统包括可以包括在RFID标签装置中的温度敏感天线。 该天线与温度敏感材料相关联，其在一段时间间隔内暴露于特定温度水平时，会引起天线谐振频率变化和天线信号强度变化（例如，天线增益）中的至少一个， 。 还提供了一种RFID读取器，其向标签装置发送命令，并且基于在与天线不同的频率上接收的信号强度的比较来确定温度变化的存在。

    Signal detection arrangement
    10.
    发明申请
    Signal detection arrangement 审中-公开
    信号检测装置

    公开(公告)号：US20070026818A1

    公开(公告)日：2007-02-01

    申请号：US11193665

    申请日：2005-07-29

    申请人： Bruce Willins ,  Huayan Wang ,  Benjamin Bekritsky

    发明人： Bruce Willins ,  Huayan Wang ,  Benjamin Bekritsky

    IPC分类号： H04B1/02

    CPC分类号： H04W48/16 ,  H04W88/10

    摘要： Described is an arrangement including a receiver and an enveloped detection arrangement. The receiver receives radio frequency signals generated according to a predetermined wireless communication protocol. The envelope detection arrangement screens the radio frequency signals for a predetermined signal which utilizes the predetermined wireless communication protocol and has a predetermined envelope sequence. Upon detection of the predetermined signal, the arrangement transmits a further signal to a computing device coupled thereto. The further signal is an instruction for the computing device to execute a predetermined action.

    摘要翻译： 描述了包括接收器和包络检测装置的布置。 接收机接收根据预定无线通信协议生成的射频信号。 信封检测装置屏蔽使用预定无线通信协议并具有预定包络序列的预定信号的射频信号。 在检测到预定信号时，该装置向耦合到其的计算装置发送另外的信号。 另外的信号是用于计算设备执行预定动作的指令。