Method of communicating in a radio frequency identification system using aloha networks

    公开(公告)号:US10063515B2

    公开(公告)日:2018-08-28

    申请号:US11698242

    申请日:2007-01-26

    IPC分类号: H04L29/12 H04L29/08

    摘要: A method is presented for taking an unknown field of transponders and converting them to a slotted Aloha architecture and increasing the throughput allowed by the slotted Aloha architecture by using several different techniques including shortening the time of empty and collided timeslots, implementing a unique random number generator that creates random numbers that are uniquely based on an individual tags location, and on an ability to estimate the total number of transponders and control the offered rate such that throughput is always maximum. While these techniques work well together and produce the most benefit when used together, they are independent techniques and any one may be used alone without the others. Thus a system might use the estimated total number of transponders technique and the timeslot shortening technique, but use a standard random number generator rather one based on transponder location with only a small decrease in overall performance.

    Multidimensional sieving for high density low collision RFID tag fields
    2.
    发明申请
    Multidimensional sieving for high density low collision RFID tag fields 审中-公开
    用于高密度低碰撞RFID标签领域的多维筛选

    公开(公告)号:US20080180220A1

    公开(公告)日:2008-07-31

    申请号:US11698243

    申请日:2007-01-26

    IPC分类号: G06K7/00 G06K17/00

    摘要: A system comprising an RFID Reader and an array of RFID Tags, where the tags have the ability to measure physical signal properties such as FM deviation and Received Signal Strength as examples and use these measurements to create a means to refrain from responding to the Reader, unless the measured values fall inside a range determined by a built in algorithm or decision tree or by the Reader and transmitted to the array of Tags in an outbound message. The system may also use non-physical parameters, including tokens sent by the Interrogator/Reader to the Tag field. Moreover, physical parameters may be divided into maskable and unmaskable parameters. Signal frequency is not maskable by the environment, for example, but signal amplitude and phase are maskable by the environment during propagation. Additionally, the number, the nature and the range of each Multidimensional Variable are set by the Interrogator at the start of a session. In this way, foreknowledge or good estimates of the tag population will lead to higher efficiency operation

    摘要翻译: 一种包括RFID读取器和RFID标签阵列的系统,其中标签具有测量诸如FM偏差和接收信号强度之类的物理信号特性的能力,并且使用这些测量来创建避免对Reader的响应的手段, 除非测量值落在由内置算法或决策树或读者确定的范围内,并传输到出站消息中的标签阵列。 该系统还可以使用非物理参数,包括由询问器/读取器发送到标签字段的令牌。 此外,物理参数可以分为可屏蔽和不可屏蔽的参数。 信号频率不能被环境屏蔽,例如信号幅度和相位在传播期间被环境掩蔽。 另外,每个多维变量的数量,性质和范围由会话开始时的询问器设置。 以这种方式,对标签人群的预知或良好的估计将导致更高的效率操作

    Method for reading RFID tags using directional antennas
    3.
    发明申请
    Method for reading RFID tags using directional antennas 失效
    使用定向天线读取RFID标签的方法

    公开(公告)号:US20080042847A1

    公开(公告)日:2008-02-21

    申请号:US11502773

    申请日:2006-08-14

    IPC分类号: G08B13/14 H04Q5/22

    摘要: A method and system for reading RFID tags in a high-density environment using a directional scanning antenna system is provided. The directional scanning antenna system consists of transmit and receive antennas having highly directional antenna patterns which work together to read and locate the tags. In operation both types of antennas are stepped in a circular fashion with respect to each other wherein the transmit antenna's antenna pattern pauses during rotation while the receive antenna pattern sweeps across the radiating antenna's path produced by the transmit antenna such that the antenna patterns produced from each isolate and determine the location of the tags.

    摘要翻译: 提供了一种使用定向扫描天线系统在高密度环境中读取RFID标签的方法和系统。 定向扫描天线系统由具有高度定向天线图案的发射和接收天线组成,它们一起工作以读取和定位标签。 在操作中,两种类型的天线相对于彼此以圆形方式步进,其中发射天线的天线方向图在旋转期间暂停,而接收天线方向扫描由发射天线产生的辐射天线的路径,使得从每个天线产生的天线方向图 隔离并确定标签的位置。

    Multidimensional sieving for high density low collision RFID tag fields

    公开(公告)号:US10817679B2

    公开(公告)日:2020-10-27

    申请号:US11698243

    申请日:2007-01-26

    IPC分类号: G06K7/00 G06K7/10

    摘要: A system comprising an RFID Reader and an array of RFID Tags, where the tags have the ability to measure physical signal properties such as FM deviation and Received Signal Strength as examples and use these measurements to create a means to refrain from responding to the Reader, unless the measured values fall inside a range determined by a built in algorithm or decision tree or by the Reader and transmitted to the array of Tags in an outbound message. The system may also use non-physical parameters, including tokens sent by the Interrogator/Reader to the Tag field. Moreover, physical parameters may be divided into maskable and unmaskable parameters. Signal frequency is not maskable by the environment, for example, but signal amplitude and phase are maskable by the environment during propagation. Additionally, the number, the nature and the range of each Multidimensional Variable are set by the Interrogator at the start of a session. In this way, foreknowledge or good estimates of the tag population will lead to higher efficiency operation.

    Method for reading RFID tags using directional antennas
    5.
    发明授权
    Method for reading RFID tags using directional antennas 失效
    使用定向天线读取RFID标签的方法

    公开(公告)号:US08791824B2

    公开(公告)日:2014-07-29

    申请号:US11502773

    申请日:2006-08-14

    IPC分类号: G08B13/14

    摘要: A method and system for reading RFID tags in a high-density environment using a directional scanning antenna system is provided. The directional scanning antenna system consists of transmit and receive antennas having highly directional antenna patterns which work together to read and locate the tags. In operation both types of antennas are stepped in a circular fashion with respect to each other wherein the transmit antenna's antenna pattern pauses during rotation while the receive antenna pattern sweeps across the radiating antenna's path produced by the transmit antenna such that the antenna patterns produced from each isolate and determine the location of the tags.

    摘要翻译: 提供了一种使用定向扫描天线系统在高密度环境中读取RFID标签的方法和系统。 定向扫描天线系统由具有高度定向天线图案的发射和接收天线组成,它们一起工作以读取和定位标签。 在操作中,两种类型的天线相对于彼此以圆形方式步进,其中发射天线的天线方向图在旋转期间暂停,而接收天线方向扫描由发射天线产生的辐射天线的路径,使得从每个天线产生的天线方向图 隔离并确定标签的位置。

    Method of communicating in a radio frequency identification system using aloha networks
    6.
    发明申请
    Method of communicating in a radio frequency identification system using aloha networks 审中-公开
    使用aloha网络在射频识别系统中进行通信的方法

    公开(公告)号:US20080180222A1

    公开(公告)日:2008-07-31

    申请号:US11698242

    申请日:2007-01-26

    IPC分类号: H04Q7/00

    摘要: A method is presented for taking an unknown field of transponders and converting them to a slotted Aloha architecture and increasing the throughput allowed by the slotted Aloha architecture by using several different techniques including shortening the time of empty and collided timeslots, implementing a unique random number generator that creates random numbers that are uniquely based on an individual tags location, and on an ability to estimate the total number of transponders and control the offered rate such that throughput is always maximum. While these techniques work well together and produce the most benefit when used together, they are independent techniques and any one may be used alone without the others. Thus a system might use the estimated total number of transponders technique and the timeslot shortening technique, but use a standard random number generator rather one based on transponder location with only a small decrease in overall performance.

    摘要翻译: 提出了一种方法,用于采集应答器的未知字段并将其转换为时隙的Aloha架构,并通过使用几种不同的技术来增加时隙Aloha架构允许的吞吐量,包括缩短空和冲突时隙的时间,实现唯一的随机数生成器 其创建基于单个标签位置唯一的随机数,以及估计转发器总数并控制提供的速率使得吞吐量总是最大的能力。 虽然这些技术在一起工作,并且在一起使用时产生最大的收益,但是它们是独立的技术,任何一种都可以单独使用而不需要其他技术。 因此,系统可以使用估计的转发器技术总数和时隙缩短技术,但是使用标准随机数发生器,而不是基于应答器位置,而整体性能只有很小的降低。

    System for identifying contents of closed containers using RFID tags
    7.
    发明申请
    System for identifying contents of closed containers using RFID tags 审中-公开
    使用RFID标签识别封闭容器内容的系统

    公开(公告)号:US20080041947A1

    公开(公告)日:2008-02-21

    申请号:US11502752

    申请日:2006-08-14

    IPC分类号: G06Q30/00 G08B13/14 G08B1/08

    CPC分类号: G06Q10/08

    摘要: A system and method is provided which allows for instant recognition of contents of a closed container by providing descriptive information in the form of a picture, and/or an audio description, and/or text of the contents of the closed container taken at the time of packing the container. The system keeps track of the contents of an individual container by storing information describing the contents of the container that is then related to a unique identification number stored in a radio frequency identification tag affixed to the container. This information is then stored in a digital database for later reference.

    摘要翻译: 提供了一种系统和方法,其允许通过以下方式提供密封容器内容的描述信息和/或音频描述,和/或当时所采取的密闭容器的内容的文本 包装容器。 系统通过存储描述容器内容的信息来跟踪单个容器的内容,该信息与存储在固定到容器上的射频识别标签中的唯一标识号相关。 然后将该信息存储在数字数据库中供以后参考。

    Method for the display of visual sequencing of message communications between application portlets and task page relationship information in a web-base environment
    10.
    发明申请
    Method for the display of visual sequencing of message communications between application portlets and task page relationship information in a web-base environment 审中-公开
    在Web基础环境中显示应用程序portlet之间的消息通信和任务页面关系信息的可视排序的方法

    公开(公告)号:US20060242249A1

    公开(公告)日:2006-10-26

    申请号:US11114533

    申请日:2005-04-26

    IPC分类号: G06F15/16

    CPC分类号: G06F16/958

    摘要: A display portal page in a web-based environment. This display portlet presents the message communication information between the portlets that are currently running on that portal page. The displayed message communication information indicates the portlet that is the source of a transmitted message and displays one or more portlets that receive the message. The visual representations can be of various formats such as a spacial display or a tree representation. Each communicated message has a stored record identifying the transmitting portlet and any portlet that receives the message.

    摘要翻译: 基于Web的环境中的显示门户页面。 此显示portlet显示当前在该门户页面上运行的portlet之间的消息通信信息。 所显示的消息通信信息指示作为所发送消息的源的portlet,并显示接收消息的一个或多个portlet。 视觉表示可以是各种格式,例如空间显示或树表示。 每个传送的消息具有标识发送Portlet的存储的记录和接收消息的任何portlet。