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    Inventory tracking using RFID
    1.
    发明授权
    Inventory tracking using RFID 有权

    公开(公告)号：US10037449B1

    公开(公告)日：2018-07-31

    申请号：US14869876

    申请日：2015-09-29

    申请人： Amazon Technologies, Inc.

    发明人： Camerin Hahn ,  Somasundaram Niranjayan ,  Ronald Eugene Huebner

    IPC分类号： G06K7/10 ,  G06Q10/08 ,  G06K19/07 ,  G06K7/00 ,  G06K19/077

    CPC分类号： G06K7/0008 ,  G06K7/10009 ,  G06K7/10059 ,  G06K19/0707 ,  G06K19/07749 ,  G06K19/07771 ,  G06Q10/087 ,  G07F11/64 ,  G07G1/009

    摘要： A storage unit includes a support bar for hanging items and an RFID antenna provided within a predefined distance of the support bar. When the items hanging from the support bar are adorned with RFID tags, and the RFID antenna emits electromagnetic fields in a direction of the support bar, RFID signals identifying the items are transmitted from the RFID tags to the RFID antenna, thereby enabling a placement or a removal of an item to be automatically registered, or an accounting of the available items to be automatically performed. The RFID antenna may be a portion of a transmission line that uses shields and/or dielectric materials to shape the electromagnetic fields toward a predefined direction, and the locations of items bearing RFID tags on the support bar may be determined by varying the phase of the emitted radiofrequency and determining strengths of RFID signals when the electromagnetic fields are emitted at varying phases.

    Enhanced identification system
    3.
    发明授权
    Enhanced identification system 有权
    增强识别系统

    公开(公告)号：US08872631B2

    公开(公告)日：2014-10-28

    申请号：US13572260

    申请日：2012-08-10

    申请人： Raymond Catherall Atkins ,  Mario Alphonso Marais ,  Hendrik Van Zyl Smit

    发明人： Raymond Catherall Atkins ,  Mario Alphonso Marais ,  Hendrik Van Zyl Smit

    IPC分类号： H04Q5/22 ,  G06K7/10 ,  G06K7/00

    CPC分类号： G06K7/10346 ,  G06K7/0008 ,  G06K7/10039 ,  G06K7/10059 ,  G06K7/10336

    摘要： A method and an identification system used for communicating between a reader and a plurality of transponders are disclosed. The reader has a transmitter for transmitting a signal and each transponder includes a receiver for receiving the reader signal and a transmitter for generating a transponder signal. When the reader recognizes a transponder signal from one of the transponders it immediately issues a mute instruction, muting all other active transponders and passing control to the said transponder, without the need for a specifically timed acknowledgement to the said controlling transponder. The reader may issue a single disable/wakeup instruction which disables the controlling transponder returning control to the reader and reactivated all muted (but not disabled) transponders.

    摘要翻译： 公开了一种用于读取器和多个转发器之间的通信的方法和识别系统。 读取器具有用于发送信号的发射器，并且每个应答器包括用于接收读取器信号的接收器和用于产生应答器信号的发射器。 当读取器识别到来自应答器之一的应答器信号时，它立即发出静音指令，使所有其他有效转发器静音并将控制传递到所述应答器，而不需要对所述控制转发器进行专门的定时确认。 读卡器可以发出一个单独的禁用/唤醒指令，该指令禁止控制转发器将读取器返回控制，并重启所有静音（但未禁用）的转发器。

    Random delay generation for thin-film transistor based circuits
    4.
    发明授权
    Random delay generation for thin-film transistor based circuits 有权
    基于薄膜晶体管的电路的随机延迟生成

    公开(公告)号：US08810298B2

    公开(公告)日：2014-08-19

    申请号：US12625435

    申请日：2009-11-24

    申请人： Vivek Subramanian ,  Mingming Mao ,  Zhigang Wang

    发明人： Vivek Subramanian ,  Mingming Mao ,  Zhigang Wang

    IPC分类号： H03K5/13 ,  H03K3/03 ,  G06K19/07

    CPC分类号： H04B1/04 ,  G06K7/0008 ,  G06K7/10059 ,  G06K19/0723 ,  H01L22/20 ,  H01L2924/0002 ,  H03B5/1203 ,  H03K3/0315 ,  H03K3/033 ,  H03K3/355 ,  H03K5/13 ,  H03K5/133 ,  H04H20/16 ,  H01L2924/00

    摘要： Circuits and circuit elements configured to generate a random delay, a monostable oscillator, circuits configured to broadcasting repetitive messages wireless systems, and methods for forming such circuits, devices, and systems are disclosed. The present invention advantageously provides relatively low cost delay generating circuitry based on TFT technology in wireless electronics applications, particularly in RFID applications. Such novel, technically simplified, low cost TFT-based delay generating circuitry enables novel wireless circuits, devices and systems, and methods for producing such circuits, devices and systems.

    摘要翻译： 被配置为产生随机延迟的电路和电路元件，单稳态振荡器，被配置为广播重复消息无线系统的电路，以及用于形成这种电路，装置和系统的方法。 本发明有利地提供了在无线电子应用中特别是RFID应用中基于TFT技术的相对较低成本的延迟产生电路。 这种新颖的，技术上简化的，低成本的基于TFT的延迟产生电路实现了新颖的无线电路，设备和系统以及用于生产这样的电路，设备和系统的方法。

    Methods and apparatuses to identify devices
    5.
    发明授权
    Methods and apparatuses to identify devices 有权
    识别设备的方法和设备

    公开(公告)号：US08742899B2

    公开(公告)日：2014-06-03

    申请号：US13330384

    申请日：2011-12-19

    申请人： John Stephen Smith

    发明人： John Stephen Smith

    IPC分类号： H04Q5/22 ,  G06K7/08 ,  G08B13/14

    CPC分类号： G06K7/10366 ,  G06K7/0008 ,  G06K7/10039 ,  G06K7/10059 ,  G06K7/10346 ,  G06K19/0723 ,  G08B13/2485

    摘要： An apparatus and method to identify devices including a first set of commands to identify devices in a first state and a second set of commands to identify devices in a second state, wherein devices identified in the first state are placed in the second state and devices identified in the second state are placed in the first state.

    摘要翻译： 一种用于识别包括用于识别处于第一状态的设备的第一组命令的设备和方法，以及用于识别处于第二状态的设备的第二组命令，其中在第一状态下识别的设备被置于第二状态，并且识别出设备 在第二状态处于第一状态。

    Communication set up between wireless devices
    6.
    发明授权
    Communication set up between wireless devices 失效
    无线设备之间建立通信

    公开(公告)号：US08385309B2

    公开(公告)日：2013-02-26

    申请号：US11795500

    申请日：2005-12-09

    申请人： Christophe Aillaud ,  Henri Ohanian

    发明人： Christophe Aillaud ,  Henri Ohanian

    IPC分类号： H04J3/00 ,  H04L12/66

    CPC分类号： G06K7/10059 ,  G06K7/0008 ,  G06K7/10297 ,  G06K19/0723

    摘要： A slave wireless device includes several applications, a wireless communication interface and a processing module. The processing module interprets a presentation request and time-slotted markers received on the communication interface, selects several applications or application groups corresponding to the presentation request, and transmits the wireless slave device identifier distinctive for each application or application group selected in the distinctive time slot in response to the presentation request. The slave device is thus enabled to indicate several application groups in response to a single presentation request.

    摘要翻译： 从无线设备包括若干应用，无线通信接口和处理模块。 处理模块解释在通信接口上接收到的呈现请求和时隙标记，选择对应于呈现请求的多个应用或应用组，并且发送针对在不同时隙中选择的每个应用或应用组分别的无线从设备标识符 响应演示请求。 因此，从设备能够响应于单个呈现请求来指示多个应用组。

    LABEL ANTI-COLLISION METHOD AND SYSTEM
    9.
    发明申请
    LABEL ANTI-COLLISION METHOD AND SYSTEM 审中-公开
    标签防碰撞方法和系统

    公开(公告)号：US20120075075A1

    公开(公告)日：2012-03-29

    申请号：US13375540

    申请日：2009-12-28

    申请人： Jiang Du ,  Li Wang ,  Yongzhi Zhang

    发明人： Jiang Du ,  Li Wang ,  Yongzhi Zhang

    IPC分类号： G06K7/01

    CPC分类号： G06K7/0008 ,  G06K7/10049 ,  G06K7/10059

    摘要： A label anti-collision method is disclosed, which is applied in a radio frequency identification system including a reader and labels. When the labels enter into an arbitration process, the reader sends the predetermined number of labels to the labels; the reader sends start counting instruction; after a label receives the start counting instruction, the label initializes its own information, and according to the predetermined number of the labels, selects a random number as an initial value of a counter and enters into the arbitration process. A label anti-collision system is also disclosed. With the method and the system, all the labels are hashed at the beginning of arbitrating with the Binary Tree method so as to reduce the probability of the collisions and improve the arbitration efficiency.

    摘要翻译： 公开了一种应用于包括读取器和标签的射频识别系统的标签防碰撞方法。 当标签进入仲裁过程时，读者将预定数量的标签发送到标签; 读者发送开始计数指令; 在标签接收到开始计数指令之后，标签初始化其自己的信息，并且根据预定数量的标签，选择随机数作为计数器的初始值并进入仲裁处理。 还公开了一种标签防碰撞系统。 利用方法和系统，所有标签在二进制树法的仲裁开始时被散列，以减少冲突的可能性并提高仲裁效率。

    IDENTIFYING RFID CATEGORIES
    10.
    发明申请
    IDENTIFYING RFID CATEGORIES 有权
    识别RFID类别

    公开(公告)号：US20100295659A1

    公开(公告)日：2010-11-25

    申请号：US12470061

    申请日：2009-05-21

    申请人： Murali Kodialam ,  Thyaga Nandagopal ,  Wing C. Lau

    发明人： Murali Kodialam ,  Thyaga Nandagopal ,  Wing C. Lau

    IPC分类号： H04Q5/22

    CPC分类号： G06K7/0008 ,  G06K7/10059

    摘要： The set T of all categories in a population of RFID tags is estimated within a specified error bound. For each of one or more frames, a reader broadcasts a probability p, a multiplicity d, a frame size M, and a seed value R to the present tags. A deterministic algorithm on each tag, and known to the reader, calculates (i) whether the tag will transmit in this frame, and, if so, (ii) in which slots the tag will transmit a single “1.” When the tags have responded, the reader calculates set T by initially assuming that all possible categories are in set T and then eliminating those categories that would have transmitted in those slots in which no tag transmitted. Alternatively, the reader initially assumes that set T is empty, and adds those categories that would have transmitted in those slots in which one or more tags did transmit.

    摘要翻译： 估计RFID标签中所有类别的集合T在指定的误差范围内。 对于一个或多个帧中的每一个，读取器向当前标签广播概率p，多重度d，帧大小M和种子值R. 每个标签上的确定性算法，并且由读者知道，计算（i）标签是否将在该帧中传输，如果是，则（ii）标签将在哪个时隙中传送单个“1”。当标签 读者通过最初假设所有可能的类别都在T中计算集合T，然后消除那些在没有标签发送的那些时隙中传送的类别。 或者，读取器最初假设集合T为空，并且添加将在一个或多个标签确实发送的那些时隙中传送的那些类别。