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    SYSTEM AND METHOD FOR DERIVING SPATIAL SEQUENCE OF MULTIPLE OBJECTS ON AN INTERACTIVE SURFACE
    2.
    发明申请
    SYSTEM AND METHOD FOR DERIVING SPATIAL SEQUENCE OF MULTIPLE OBJECTS ON AN INTERACTIVE SURFACE 审中-公开

    公开(公告)号：US20180275266A1

    公开(公告)日：2018-09-27

    申请号：US15992158

    申请日：2018-05-29

    申请人： Zheng Shi ,  Zhengzheng Pan ,  Hanyin Ye

    发明人： Zheng Shi ,  Zhengzheng Pan ,  Hanyin Ye

    IPC分类号： G01S13/75 ,  G06K7/10 ,  A63F9/00

    CPC分类号： G01S13/75 ,  A63F9/0073 ,  A63F2009/0075 ,  G06K7/10069 ,  G06K7/10079 ,  G06K7/10099 ,  G06K7/10118 ,  G06K7/10198 ,  G06K7/10366

    摘要： The present invention provides a system and accompanying method for deriving spatial sequence of multiple objects on an interactive surface. The system includes an interactive surface and multiple physical objects. Each object is placed within a finite three-dimensional space on the interactive surface, and embedded with an RFID tag. The interactive surface further includes an RF module, an antenna, a host, an adjustable matching network, a channel switch, and an output module. The host instructs the channel switch to change the parameters of the components of the adjustable matching network to generate a series of resonance frequencies. And the host instructs the antenna to read the RFID tags at the series of resonance frequencies, with an effective reading range of the antenna changing as the resonance frequency changes. The host receives information of multiple sets of RFID tags in multiple readings, derives a spatial sequence of the objects placed on the interactive surface, and provides the output signal or action through the output module. The invention could be applied to the Tower of Hanoi game.

    Systems and methods for tracking subjects
    5.
    发明授权
    Systems and methods for tracking subjects 有权
    追踪科目的系统和方法

    公开(公告)号：US09411997B1

    公开(公告)日：2016-08-09

    申请号：US14923089

    申请日：2015-10-26

    申请人： Parachute Systems, Inc.

    发明人： Robert R. Mehranfar ,  Darrell C. Chow

    IPC分类号： H04Q5/22 ,  G06K7/10 ,  H04W4/02 ,  G06Q10/06 ,  G06K7/00

    CPC分类号： G06K7/10366 ,  G06K7/0008 ,  G06K7/10009 ,  G06K7/10118 ,  G06K7/10425 ,  G06K7/10475 ,  G06Q10/06 ,  G08B7/066 ,  G08B27/001 ,  G08B29/04 ,  H04Q5/22 ,  H04Q9/00 ,  H04Q2209/47 ,  H04W4/02 ,  H04W4/029 ,  H04W4/80

    摘要： A radio frequency identification (RFID) network and methods for tracking subjects in a closed environment includes distributing RFID readers across the environment. Readers have unique reader identifiers and communicate with a computer system. These identifiers and reader locations are stored. The location of subjects bearing passive RFID tags is acquired by reading the unique subject identifiers off the tags and associating these RFID tags with the reader identifiers of the readers making the readings. A subject data store includes the location data of the subjects obtained by the RFID readers and electronic addresses of the subjects. An instruction set data store comprising sets, each set corresponding to one of a plurality of events, is also maintained. In accordance with the instruction set data store, in response to an event, different event messages are sent to different subjects based upon their location in the closed environment and/or their class label.

    摘要翻译： 无线射频识别（RFID）网络和在封闭环境中跟踪被摄体的方法包括在整个环境中分发RFID阅读器。 读者具有唯一的阅读器标识符并与计算机系统通信。 存储这些标识符和读取器位置。 携带无源RFID标签的受试者的位置通过从标签读取独特的主题标识符并将这些RFID标签与读取器的阅读器标识符相关联来获取读取。 主题数据存储包括由RFID读取器获得的对象的位置数据和对象的电子地址。 还保持包括与多个事件之一相对应的集合的集合的指令集数据存储。 根据指令集数据存储，响应于事件，不同的事件消息基于它们在封闭环境和/或其类标签中的位置被发送到不同的主题。

    Positioning guidance for increasing reliability of near-field communications
    6.
    发明授权
    Positioning guidance for increasing reliability of near-field communications 有权
    定位指导，提高近场通信的可靠性

    公开(公告)号：US09152832B2

    公开(公告)日：2015-10-06

    申请号：US13250093

    申请日：2011-09-30

    申请人： Philip Stewart Royston ,  David Cox

    发明人： Philip Stewart Royston ,  David Cox

    IPC分类号： H04B5/00 ,  G06K7/015 ,  G06K7/10

    CPC分类号： H04B5/0031 ,  G06K7/015 ,  G06K7/10118 ,  G06K7/10336 ,  G06K7/10356 ,  H04B5/0043

    摘要： To promote ease of use, as well as a reduction in bit error rates during extended data exchange between a coupled NFC tag/reader pair, signal strength is measured from a plurality of NFC tag antennas each positioned differently with respect to a common reader field, and differences in signal strength are used to determine an optimum positioning of the tag, or tag emulator, with respect to the reader. Alternative embodiments may include signal time of flight for determining orientation of the NFC antennas within the reader field. Information is generated by the tag, or tag emulator, and output by the tag, or tag emulator, such that a user may direct the positioning of the tag, or tag emulator, for improved communication with the reader.

    摘要翻译： 为了促进易用性，以及在耦合的NFC标签/读取器对之间的扩展数据交换期间减少位错误率，从相对于公共读取器字段不同定位的多个NFC标签天线测量信号强度， 并且使用信号强度的差异来确定标签或标签仿真器相对于读取器的最佳定位。 替代实施例可以包括用于确定读取器领域内的NFC天线的定向的信号飞行时间。 信息由标签或标签仿真器生成，并由标签或标签仿真器输出，以便用户可以指示标签或标签仿真器的定位，以改善与读取器的通信。

    RFID CHECKOUT STATION USING VIRTUAL SHIELDING
    7.
    发明申请
    RFID CHECKOUT STATION USING VIRTUAL SHIELDING 审中-公开

    公开(公告)号：US20180247092A1

    公开(公告)日：2018-08-30

    申请号：US15903857

    申请日：2018-02-23

    申请人： NEC Laboratories America, Inc.

    发明人： Mohammad Khojastepour ,  Mustafa Arslan ,  Sampath Rangarajan

    IPC分类号： G06K7/10 ,  G07G1/00 ,  G01S11/06

    CPC分类号： G06K7/10079 ,  G01S11/06 ,  G06K7/10069 ,  G06K7/10118 ,  G07G1/009

    摘要： A method for detecting RFID tags attached to items positioned at a radio frequency identification (RFID) self-service checkout station is presented. The method includes creating one or more virtual shields at the RFID self-service checkout station, the one or more virtual shields defining checkout bins, associating RFID readers to the checkout bins, and enabling an RFID reader associated with the checkout bins to differentiate between RFID tags attached to items positioned inside a checkout bin and RFID tags attached to items positioned outside the checkout bin by at least determining a signal strength of each RFID tag detected by the RFID reader and estimating, based on an outcome of the signal strength of each RFID tag, a distance between each RFID reader and each RFID tag.

    RFID APPARATUS AND METHOD FOR COMMUNICATING WITH AT LEAST ONE RFID TRANSPONDER
    10.
    发明申请
    RFID APPARATUS AND METHOD FOR COMMUNICATING WITH AT LEAST ONE RFID TRANSPONDER 审中-公开

    公开(公告)号：US20180025191A1

    公开(公告)日：2018-01-25

    申请号：US15644337

    申请日：2017-07-07

    申请人： SICK AG

    发明人： Olaf PILZNER

    IPC分类号： G06K7/10 ,  G06K17/00

    CPC分类号： G06K7/10366 ,  G06K7/10029 ,  G06K7/10118 ,  G06K7/10297 ,  G06K17/0022

    摘要： An RFID apparatus for communicating with at least one RFID transponder is provided that has an RFID transceiver for radiating and receiving RFID signals and a control unit that is configured to encode RFID information into the RFID signal in accordance with an RFID protocol or to read it from the RFID signal and in which a singulation process is implemented to give a command to only one respective RFID transponder. The singulation process in this respect checks a communication parameter of the RFID signal itself that is independent of RFID information encoded in the RFID signal.