公开(公告)号：US08797141B2

公开(公告)日：2014-08-05

申请号：US12544869

申请日：2009-08-20

申请人： Gregory C Best ,  Andrew Ansell ,  Gwen Byard ,  James W Jervis ,  Jeffrey D Sanders

发明人： Gregory C Best ,  Andrew Ansell ,  Gwen Byard ,  James W Jervis ,  Jeffrey D Sanders

IPC分类号： G08B5/22 ,  G01S1/68 ,  G01S5/02 ,  G06K7/10 ,  G01S5/00

CPC分类号： G01S1/68 ,  G01S5/0009 ,  G01S5/02 ,  G06K7/10049 ,  G06K7/10079

摘要： A reverse RFID location system is based on set of RFID tags in which each tag stores data representing its position.

摘要翻译： 反向RFID定位系统基于RFID标签集合，其中每个标签存储表示其位置的数据。

公开(公告)号：US08279047B2

公开(公告)日：2012-10-02

申请号：US11891419

申请日：2007-08-10

申请人： Curt Carrender ,  John M. Price ,  Frederick A. Nylander ,  John H. Rolin ,  Roger G. Stewart

发明人： Curt Carrender ,  John M. Price ,  Frederick A. Nylander ,  John H. Rolin ,  Roger G. Stewart

IPC分类号： H04Q5/22

CPC分类号： H04W74/00 ,  G06K7/0008 ,  G06K7/10049 ,  H04W24/00 ,  H04W52/0219 ,  Y02D70/166

摘要： An identification system includes a reader and one or more tags. The reader identifies tags such as radio frequency (RF) tags. The system divides a number space into n bins, wherein each bin is associated with m unique bits of the number space, and the number space contains the identification codes of the tags. A command is issued to test v bits of the number space. A response is received from a tag, wherein the response occurs when a first portion of an identification code of the tag matches the v bits of the number space, a timing of the response corresponds to a particular bin and m unique bits associated with the particular bin correspond to a second portion of the identification code.

摘要翻译： 识别系统包括读取器和一个或多个标签。 读者识别标签，如射频（RF）标签。 该系统将数字空间划分为n个存储区，其中每个仓都与数字空间的m个唯一位相关联，并且数字空间包含标签的识别码。 发出一个命令来测试数字空间的v位。 从标签接收到响应，其中响应发生在标签的识别码的第一部分与数字空间的v位匹配时，响应的定时对应于特定的bin，并且与特定的相关联的m个唯一的位 bin对应于识别码的第二部分。

公开(公告)号：US08193910B2

公开(公告)日：2012-06-05

申请号：US11504591

申请日：2006-08-16

申请人： Tomomitsu Murano

发明人： Tomomitsu Murano

IPC分类号： H04Q5/22

CPC分类号： G06K7/0008 ,  G06K7/10049

摘要： There is provided an interrogator, transponder, and transponder identification method, which shorten processing time for identification. An interrogator that makes wireless communication with a transponder, comprising: a temporary number specify section that transmits a request for transmission of a unit bit string as a bit string having a predetermined length in a bit string expressing a temporary number owned by the transponder, receives a unit bit sting transmitted from the transponder in response to the request, and specifies the temporary number of the transponder, based on the unit bit string; and an identification information obtaining section that transmits, if a temporary number of a transponder is specified by the temporary number specify section, a request for transmission of identification information of the transponder to the transponder, and receives the identification information transmitted from the transponder, in response to the request.

摘要翻译： 提供了一种询问器，应答器和应答器识别方法，缩短了识别处理时间。 一种与应答器进行无线通信的询问器，包括：临时号码指定部分，发送单元位串的发送请求作为表示所述应答器所拥有的临时号码的位串中的具有预定长度的位串，接收 响应于该请求从应答器发送的单元比特，并基于单位比特串指定应答器的临时号码; 以及识别信息获取部，如果临时号码指定部指定了应答器的临时号码，则发送应答器的识别信息的请求发送到应答器，并且接收从应答器发送的识别信息， 响应请求。

公开(公告)号：US08115602B2

公开(公告)日：2012-02-14

申请号：US12027756

申请日：2008-02-07

申请人： Junbong Eom ,  Taejin Lee

发明人： Junbong Eom ,  Taejin Lee

IPC分类号： H04Q5/22

CPC分类号： H04W8/005 ,  G06K7/0008 ,  G06K7/10049

摘要： Provided are a tag estimation method and a tag identification method using the same in a RFID system. In the tag estimating method, a reader divides tags in an identifiable area into a predetermined number of groups. Tags are identified by applying a pilot frame Lp to a first group among the divided groups. The reader calculates a collision probability Pcoll of tags after the pilot frame ends. Then, unidentified tags of the first group, which are not identified for the pilot frame, are identified by allocating an additional pilot slot Ladd at an end of the pilot frame or generating a new frame L1 according to the collision probability Pcoll.

摘要翻译： 提供了一种RFID系统中的标签估计方法和使用该标签的标签识别方法。 在标签估计方法中，读取器将可识别区域中的标签分成预定数量的组。 通过将划分的组中的第一组应用导频帧Lp来识别标签。 读者计算导频帧结束后的标签的碰撞概率Pcoll。 然后，通过在导频帧的末尾分配附加导频时隙Ladd或者根据冲突概率Pcoll产生新的帧L1，来识别未被识别用于导频帧的第一组的未识别标签。

公开(公告)号：USRE42344E1

公开(公告)日：2011-05-10

申请号：US10693697

申请日：2003-10-23

申请人： Clifton W. Wood, Jr. ,  Don Hush

发明人： Clifton W. Wood, Jr. ,  Don Hush

IPC分类号： H04J1/16 ,  H04L12/56

CPC分类号： H04L12/44 ,  G06K7/0008 ,  G06K7/10049 ,  H04W4/06 ,  H04W8/005 ,  H04W8/26 ,  H04W74/04 ,  H04W76/10

摘要： A method of establishing wireless communications between an interrogator and individual ones of multiple wireless identification devices, the method comprising utilizing a tree search method to establish communications without collision between the interrogator and individual ones of the multiple wireless identification devices, a search tree being defined for the tree search method, the tree having multiple levels representing subgroups of the multiple wireless identification devices, the number of devices in a subgroup in one level being half of the number of devices in the next higher level, the tree search method employing level skipping wherein at least one level of the tree is skipped. A communications system comprising an interrogator, and a plurality of wireless identification devices configured to communicate with the interrogator in a wireless fashion, the respective wireless identification devices having a unique identification number, the interrogator being configured to employ a tree search technique to determine the unique identification numbers of the different wireless identification devices so as to be able to establish communications between the interrogator and individual ones of the multiple wireless identification devices without collision by multiple wireless identification devices attempting to respond to the interrogator at the same time, wherein levels of the tree are occasionally skipped. RFID tags are managed by an interrogator. In one embodiment, the interrogator sends a first command indicating a first value and a first memory range, and a second command indicating second value and a second memory range. The first memory range differs from the second memory range by at least two bits. RFID tags compare the first and second values to corresponding values stored in the tags to determine if the tags are selected. Selected tags may respond to the interrogator with independently generated random numbers.

摘要翻译： 一种在询问器和多个无线识别装置中的各个无线识别装置之间建立无线通信的方法，所述方法包括利用树形搜索方法建立通信而不会在询问器与多个无线识别装置中的各个无线识别装置之间发生冲突，搜索树被定义为 树搜索方法，具有表示多个无线识别装置的子组的多个级别的树，一个级别中的子组中的设备的数量是下一较高级别中的设备数量的一半，采用跳过的树搜索方法，其中 树中至少有一个级别被跳过。 一种通信系统，包括询问器和多个无线识别设备，被配置为以无线方式与询问器进行通信，相应的无线识别设备具有唯一的标识号，询问器被配置为采用树形搜索技术来确定唯一的 识别号码，以便能够在多个无线识别装置中的询问器和各个无线识别装置之间建立通信，而不会同时尝试响应询问器的多个无线识别装置的冲突，其中， 偶尔跳过树。 RFID标签由询问器管理。 在一个实施例中，询问器发送指示第一值和第一存储器范围的第一命令，以及指示第二值和第二存储器范围的第二命令。 第一存储器范围与第二存储器范围不同至少两位。 RFID标签将第一和第二值与存储在标签中的相应值进行比较，以确定标签是否被选择。 所选标签可以使用独立生成的随机数来响应询问器。

公开(公告)号：US20110057777A1

公开(公告)日：2011-03-10

申请号：US12802795

申请日：2010-06-14

申请人： Norman E. Moyer

发明人： Norman E. Moyer

IPC分类号： G06K7/01

CPC分类号： H04W8/005 ,  G06K7/0008 ,  G06K7/10049

摘要： Systems and methods for efficiently querying and identifying multiple items on a communication channel are disclosed. The inventions preferably uses radio frequency identification with interrogation devices and systems that identify radio frequency identification transponders. A depth-first tree traversal protocol algorithm, including commands and symbols, is used to more efficiently interrogate a plurality of transponders in a short amount of time.

摘要翻译： 公开了用于有效地查询和识别通信信道上的多个项目的系统和方法。 本发明优选地使用无线电频率识别与询问装置和识别射频识别转发器的系统。 使用深度优先的树遍历协议算法（包括命令和符号）来在短时间内更有效地询问多个转发器。

公开(公告)号：US07336154B2

公开(公告)日：2008-02-26

申请号：US10903721

申请日：2004-07-30

申请人： Ulrich Friedrich

发明人： Ulrich Friedrich

IPC分类号： H04Q5/22

CPC分类号： G06K7/10049 ,  G06K7/0008 ,  G06K17/00

摘要： One or more transponders are selected by a base station out of a plurality of transponders. For this purpose an identification bit sequence (IB) that is or includes a random number bit sequence (ZB) is made available in the respective transponder and the base station transmits in a bit-by-bit fashion a selection bit sequence (AB) to the transponders. These sequences (IB or ZB) and (AB) are compared bit-by-bit in the respective transponder. The comparing is performed by way of a predeterminable comparing criterion to provide a comparing result in the form of a selection bit to which a bit value is assigned. The selection is then made depending on the bit value of the selection bit of the respective transponder.

摘要翻译： 一个或多个转发器由多个应答器中的基站选择。 为此，在相应的转发器中使得是或包括随机数位序列（ZB）的识别比特序列（IB）可用，并且基站以逐位的方式将选择比特序列（AB）发送到 转发器。 这些序列（IB或ZB）和（AB）在相应的转发器中被逐比地比较。 通过可预测的比较标准来执行比较，以比较值分配的选择位的形式提供比较结果。 然后根据相应应答器的选择位的位值进行选择。

公开(公告)号：US07289015B2

公开(公告)日：2007-10-30

申请号：US10915651

申请日：2004-08-09

申请人： Norman E. Moyer

发明人： Norman E. Moyer

IPC分类号： H04Q5/22 ,  G08B5/22

CPC分类号： H04W8/005 ,  G06K7/0008 ,  G06K7/10049

摘要： A method for identifying objects using an interrogation device on a communication channel is disclosed. Each object has an identification number in the form of a plurality of digits and has the ability to communicate to the interrogating device at least two different predetermined responses to indicate the value of the digits contained in its identification number. The objects are activated, and a single digit from currently activated objects is interrogated, and each object sends one of the predetermined responses. The value of the received responses is recorded, and those objects which responded with any but one of the at least two different messages are signaled to enter a deactivated state when two of the at least two different messages are received. The sequence of responses transmitted and received thus far for those objects placed in the deactivated state are recorded. Objects will no longer respond until the step of activating is repeated. The steps are selectively repeated until all of the predetermined responses are obtained for the complete identification number of at least one of the objects. The steps may thereafter be selectively repeated until the identification number of each of the objects is obtained.

摘要翻译： 公开了一种在通信信道上使用询问设备识别对象的方法。 每个对象具有多个数字形式的标识号，并且具有与询问装置通信至少两个不同的预定响应的能力，以指示其识别号码中包含的数字的值。 对象被激活，并且来自当前激活的对象的单个数字被询问，并且每个对象发送预定响应之一。 记录接收到的响应的值，并且当接收到至少两个不同消息中的两个时，发信号通知了至少两个不同消息中的任何一个响应的那些对象进入去激活状态。 记录到目前为止处于停用状态的那些物体发送和接收的响应序列。 在重复激活步骤之前，对象将不再响应。 选择性地重复这些步骤，直到获得了至少一个对象的完整标识号的所有预定响应。 此后可以选择性地重复这些步骤，直到获得每个对象的标识号。

公开(公告)号：US20070013484A1

公开(公告)日：2007-01-18

申请号：US11521836

申请日：2006-09-15

申请人： Curt Carrender ,  John Price ,  Frederick Nylander ,  John Rolin ,  Roger Stewart

发明人： Curt Carrender ,  John Price ,  Frederick Nylander ,  John Rolin ,  Roger Stewart

IPC分类号： H04Q5/22

CPC分类号： H04W74/00 ,  G06K7/0008 ,  G06K7/10049 ,  H04W24/00 ,  H04W52/0219 ,  Y02D70/166

摘要： An identification system includes a reader and one or more tags. The reader identifies tags such as radio frequency (RF) tags. The system divides a number space into n bins, wherein each bin is associated with m unique bits of the number space, and the number space contains the identification codes of the tags. A command is issued to test v bits of the number space. A response is received from a tag, wherein the response occurs when a first portion of an identification code of the tag matches the v bits of the number space, a timing of the response corresponds to a particular bin and m unique bits associated with the particular bin correspond to a second portion of the identification code.

摘要翻译： 识别系统包括读取器和一个或多个标签。 读者识别标签，如射频（RF）标签。 该系统将数字空间划分为n个存储区，其中每个仓都与数字空间的m个唯一位相关联，并且数字空间包含标签的识别码。 发出一个命令来测试数字空间的v位。 从标签接收到响应，其中响应发生在标签的识别码的第一部分与数字空间的v位匹配时，响应的定时对应于特定的bin，并且与特定的相关联的m个唯一的位 bin对应于识别码的第二部分。

公开(公告)号：US20070001812A1

公开(公告)日：2007-01-04

申请号：US11169567

申请日：2005-06-30

申请人： Kevin Powell

发明人： Kevin Powell

IPC分类号： H04Q5/22

CPC分类号： G06K7/0008 ,  G06K7/10049

摘要： System and methods for optimizing communications between an RFID reader and a population of tags are described. To increase a read rate, the reader and tags use a partial binary tree traversal. In partial binary tree traversal, a first portion of a tag identification sequence is read. A set marker command is then transmitted to a group of tags causing the tags to set a bit position for start of subsequent binary tree traversal. The subsequent binary tree traversal for the tag group starts at the marked position. Thus, the reader and group of tags negotiate a subset of the identification sequence instead of the entire identification sequence.

摘要翻译： 描述了用于优化RFID读取器和标签群之间的通信的系统和方法。 为了提高读取速度，读取器和标签使用部分二叉树遍历。 在部分二叉树遍历中，读取标签识别序列的第一部分。 然后将集合标记命令发送到一组标签，导致标签设置用于开始后续二叉树遍历的位位置。 标记组的后续二叉树遍历从标记位置开始。 因此，读取器和标签组协商识别序列的子集，而不是整个标识序列。