公开(公告)号：US06774766B1

公开(公告)日：2004-08-10

申请号：US09625184

申请日：2000-07-21

申请人： Norman E. Moyer

发明人： Norman E. Moyer

IPC分类号： H04Q522

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：US06727803B2

公开(公告)日：2004-04-27

申请号：US09811110

申请日：2001-03-16

申请人： Robert Hulvey

发明人： Robert Hulvey

IPC分类号： H04Q522

CPC分类号： G06K7/10049 ,  G06K7/0008 ,  G06K19/0723

摘要： Systems and methods for efficiently querying and identifying multiple items on a communication channel are disclosed. The invention is well suited to use with 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。 本发明非常适合用于识别射频识别转发器的询问设备和系统的射频识别。 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：US20030019929A1

公开(公告)日：2003-01-30

申请号：US10160458

申请日：2002-05-30

发明人： Roger G. Stewart ,  John Stephen Smith

IPC分类号： G06F017/60

CPC分类号： G06K7/10049 ,  G06K7/0008 ,  G06K7/08

摘要： Methods and apparatuses for identifying devices, such as RF tags, are described. In one exemplary method of an embodiment of the invention, a reader identifies tags without requiring or determining whether a response to an interrogation was a single response from a single tag or multiple responses from multiple tags. In another exemplary method of an embodiment, a method is performed by a tag in an identification system, and the method includes receiving a first data from a reader, and correlating the first data with a first corresponding portion of the tag's identification code, and specifying a match if the first data matches the first corresponding portion, and receiving second data which, combined with the first data, is correlated with a second corresponding portion of the tag's identification code.

摘要翻译： 描述用于识别诸如RF标签的设备的方法和装置。 在本发明的实施例的一个示例性方法中，读者识别标签，而不需要或确定对询问的响应是来自单个标签的单个响应还是来自多个标签的多个响应。 在实施例的另一示例性方法中，通过识别系统中的标签执行方法，并且该方法包括从读取器接收第一数据，并且将第一数据与标签的识别码的第一对应部分相关联，并且指定 匹配，如果第一数据与第一对应部分匹配，以及接收与第一数据组合的第二数据与标签的识别码的第二对应部分相关联。

公开(公告)号：US20020130766A1

公开(公告)日：2002-09-19

申请号：US09811110

申请日：2001-03-16

申请人： E-Tag Systems, Inc.

发明人： Robert Hulvey

IPC分类号： H04Q005/22 ,  H04Q001/00

CPC分类号： G06K7/10049 ,  G06K7/0008 ,  G06K19/0723

摘要： Systems and methods for efficiently querying and identifying multiple items on a communication channel are disclosed. The invention is well suited to use with 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。 本发明非常适合用于识别射频识别转发器的询问设备和系统的射频识别。 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：US06226300B1

公开(公告)日：2001-05-01

申请号：US09551304

申请日：2000-04-18

申请人： Don Hush ,  Clifton W. Wood, Jr.

发明人： Don Hush ,  Clifton W. Wood, Jr.

IPC分类号： H04J316

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.

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。

公开(公告)号：US06177858B1

公开(公告)日：2001-01-23

申请号：US08757933

申请日：1996-11-27

申请人： Pierre Raimbault ,  Jean Goupil

发明人： Pierre Raimbault ,  Jean Goupil

IPC分类号： H04Q900

CPC分类号： G06K7/10336 ,  G06K7/083 ,  G06K7/10049 ,  G06K7/10316

摘要： A method is provided for remotely identifying electronic or radio frequency tags, typically those used to mark articles, from a station, each of the tags having its own code constituted by digits, in which identification of a tag comprises the steps of issuing interrogation signals from the station for different digit positions and employing procedures to accelerate tag identification once a first tag has been found. A suitable station and tag are also provided.

摘要翻译： 提供了一种用于远程识别电台或射频标签的方法，通常用于标记物品的电子标签或射频标签，每个标签具有由数字构成的其自己的代码，其中标签的标识包括以下步骤：发出询问信号 该站用于不同的位数，并且一旦找到第一个标签，则采用程序来加速标签识别。 还提供了一个合适的车站和标签。

公开(公告)号：US08653947B2

公开(公告)日：2014-02-18

申请号：US13258361

申请日：2009-12-28

申请人： Yongzhi Zhang ,  Li Wang

发明人： Yongzhi Zhang ,  Li Wang

IPC分类号： H04Q5/22

CPC分类号： G06K7/10049 ,  G06K7/10039

摘要： The present invention provides a radio frequency identification (RFID) system and a tag counting ending method for anti-collision thereof. The RFID system comprises a reader-writer and tags. The tag counting ending method comprises: in the counting process, when the reader-writer does not receive a response signal from a tag and the value of a register is not greater than a pre-determined counting ending register threshold value, the reader-writer transmits a Finish command to each of the tags and waits for responses; after receiving the Finish command, the tag determines whether the tag itself is counted successfully, if so, makes no response; if not, sets the counter of tag itself as 0 and transmits a response signal to the reader-writer; if the reader-writer receives the response signal, then determines that counting is not finished and continues to count the tag which makes response; if the reader-writer does not receive the response signal, then determines that counting is finished.

摘要翻译： 本发明提供一种射频识别（RFID）系统及其抗冲突的标签计数结束方法。 RFID系统包括读写器和标签。 标签计数结束方法包括：在计数处理中，当读写器没有从标签接收到响应信号并且寄存器的值不大于预定的计数结束寄存器阈值时，读写器 向每个标签发送一个Finish命令，并等待响应; 在接收到完成命令之后，该标签确定标签本身是否成功计数，如果是，则不做任何响应; 如果没有，将标签本身的计数器设置为0，并将响应信号发送给读写器; 如果读写器接收到响应信号，则确定计数未完成，并继续计数作出响应的标签; 如果读写器没有收到响应信号，则确定计数结束。

公开(公告)号：US20130093571A1

公开(公告)日：2013-04-18

申请号：US13653526

申请日：2012-10-17

申请人： Tae Jin Lee ,  Jongho Park

发明人： Tae Jin Lee ,  Jongho Park

IPC分类号： G06K7/01

CPC分类号： G06K7/10049

摘要： Provided are an anti-collision system and method which address the mobility of radio frequency identification (RFID) tags. An RFID reader may transmit an identification start command to identify a plurality of RFID tags in an identification area of the RFID reader. The RFID tags compare the number of collisions of each RFID tag receiving the identification start command with a collision threshold Cth and attempt to be identified in a binary tree section of a frame or in a framed slotted ALOHA (FSA) section of the frame based on the comparison.

摘要翻译： 提供了一种解决射频识别（RFID）标签的移动性的防碰撞系统和方法。 RFID读取器可以发送识别开始命令以识别RFID读取器的识别区域中的多个RFID标签。 RFID标签将接收到识别开始命令的每个RFID标签的冲突数量与冲突阈值Cth进行比较，并尝试在帧的二叉树部分或帧的成帧时隙ALOHA（FSA）部分中基于 比较。

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。

公开(公告)号：USRE43020E1

公开(公告)日：2011-12-13

申请号：US11865580

申请日：2007-10-01

申请人： Clifton W. Wood, Jr. ,  Don Hush

发明人： Clifton W. Wood, Jr. ,  Don Hush

IPC分类号： H04Q7/00 ,  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.

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。