Apparatus and method for demodulating subcarrier tag signal in RFID reader
    41.
    发明授权
    Apparatus and method for demodulating subcarrier tag signal in RFID reader 有权
    RFID读写器中子载波标签信号的解调装置及方法

    公开(公告)号:US08264332B2

    公开(公告)日:2012-09-11

    申请号:US12348529

    申请日:2009-01-05

    IPC分类号: G08B21/00

    摘要: An apparatus and a method for demodulating a subcarrier tag signal in a radio frequency identification (RFID) reader is provided. The apparatus for demodulating the subcarrier tag signal in the RFID reader may include: an edge signal generation unit receiving a subcarrier tag signal and generating an edge signal with respect to the tag signal; an edge information extraction unit extracting edge information from the generated edge signal; and a decoding unit decoding the tag signal using the extracted edge information.

    摘要翻译: 提供了一种用于解调射频识别(RFID)读取器中的子载波标签信号的装置和方法。 用于解调RFID读取器中的子载波标签信号的装置可以包括:边缘信号生成单元,接收副载波标签信号并相对于标签信号产生边缘信号; 边缘信息提取单元,从生成的边缘信号中提取边缘信息; 以及解码单元,使用所提取的边缘信息对标签信号进行解码。

    Method for identifying multiple moving tags with multiple readers
    42.
    发明授权
    Method for identifying multiple moving tags with multiple readers 失效
    用多个读卡器识别多个移动标签的方法

    公开(公告)号:US08115603B2

    公开(公告)日:2012-02-14

    申请号:US11828703

    申请日:2007-07-26

    CPC分类号: G06K7/0008 G06K7/10356

    摘要: Disclosed is a method for identifying a plurality of moving tags by using a plurality of Radio Frequency Identification (RFID) readers. The technology of the present invention efficiently identifies multiple moving tags to thereby improve the identification rate and reading speed of an RFID system and increase the throughput of the RFID system. The method for identifying a plurality of moving tags by using a plurality of Radio Frequency Identification (RFID) readers includes the steps of: a) grouping the multiple tags into a predetermined number of tag groups; b) allocating the tag groups to the RFID readers respectively; and c) identifying tags of each allocated tag group in each RFID reader.

    摘要翻译: 公开了一种通过使用多个射频识别(RFID)读取器识别多个移动标签的方法。 本发明的技术有效地识别多个移动标签,从而提高RFID系统的识别率和读取速度,并提高RFID系统的吞吐量。 通过使用多个射频识别(RFID)读取器来识别多个移动标签的方法包括以下步骤:a)将多个标签分组成预定数量的标签组; b)分别将标签组分配给RFID阅读器; 以及c)识别每个RFID读取器中每个分配的标签组的标签。

    Method for managing dormant nodes in wireless sensor network
    44.
    发明授权
    Method for managing dormant nodes in wireless sensor network 失效
    无线传感器网络中休眠节点的管理方法

    公开(公告)号:US08040828B2

    公开(公告)日:2011-10-18

    申请号:US12085784

    申请日:2006-11-29

    IPC分类号: G08C17/00 H04H20/71

    摘要: Provided is a method for managing dormant nodes in a wireless sensor network. The method includes the steps of: a) acquiring and storing information on distance and location of sensor nodes registered in a corresponding cluster among at least one cluster managed by a managing node; b) selecting a dormant object node among the sensor nodes by the managing node; c) transmitting dormant information that the dormant object node should go into a dormant state for a predetermined period through a beacon message to the dormant object node and creating a dormant node management table; and d) updating a dormant time of the dormant node management table every beacon cycle by the managing node according to setup of a dormant time central managing function and notifying dormancy expiration to the corresponding dormant node.

    摘要翻译: 提供了一种用于管理无线传感器网络中的休眠节点的方法。 该方法包括以下步骤:a)获取和存储关于由管理节点管理的至少一个集群中登记在对应集群中的传感器节点的距离和位置的信息; b)由所述管理节点选择所述传感器节点之间的休眠对象节点; c)通过到休眠对象节点的信标消息发送休眠对象节点进入休眠状态预定时间的休眠信息,并创建休眠节点管理表; 以及d)根据休眠时间中央管理功能的设置,通过管理节点更新每个信标周期的休眠节点管理表的休眠时间,并将休眠期间通知给相应的休眠节点。

    Apparatus for synchronizing clock in real-time locating system and method therefor
    45.
    发明授权
    Apparatus for synchronizing clock in real-time locating system and method therefor 失效
    用于实时定位系统中的时钟同步的装置及其方法

    公开(公告)号:US08005369B2

    公开(公告)日:2011-08-23

    申请号:US12085767

    申请日:2005-12-27

    IPC分类号: H04B10/00

    摘要: A highly precise clock synchronization apparatus in a real-time locating system (RTLS), includes an optical transmitting/receiving unit for receiving a clock information frame from a clock synchronization server, converting the received clock information frame in series-parallel, and transmitting/receiving the clock information data and the clock information; an offset estimation unit for detecting a preamble signal and a clock information signal from the series-parallel converted clock information frame, calculating a phase difference value by comparing the detected preamble signal with the detected clock information signal, and outputting an offset value based on the calculated phase difference value; and a clock synchronization unit for updating a local clock value to a time of the clock synchronization server based on the offset value and the clock information frame.

    摘要翻译: 一种实时定位系统(RTLS)中的高精度时钟同步装置,包括一个用于从时钟同步服务器接收时钟信息帧的光发送/接收单元,并行地接收所接收的时钟信息帧,并发送/ 接收时钟信息数据和时钟信息; 偏移估计单元,用于从串并行转换时钟信息帧中检测前置码信号和时钟信息信号,通过将检测到的前导信号与检测到的时钟信息信号进行比较来计算相位差值,并输出基于 计算相位差值; 以及时钟同步单元,用于基于偏移值和时钟信息帧将本地时钟值更新为时钟同步服务器的时间。

    Power control method for mobile RFID reader and RFID reader using the same
    46.
    发明授权
    Power control method for mobile RFID reader and RFID reader using the same 有权
    移动RFID阅读器和RFID阅读器的电源控制方法使用相同

    公开(公告)号:US07893834B2

    公开(公告)日:2011-02-22

    申请号:US11607502

    申请日:2006-11-29

    IPC分类号: G08B13/14

    CPC分类号: H04B5/02 H04B5/0056 H04W52/04

    摘要: Provided is a power control method for a mobile Radio Frequency Identification (RFID) reader and an RFID reader using the same. The RFID reader includes: an RFID reader transmission/reception control unit for creating a message to be transmitted to an RFID tag and transmitting RFID tag information to a terminal control unit; a reader transmitting unit for encoding and modulating the created message; a power amplifier for amplifying an output signal; a reader receiving unit for demodulating and decoding the signal and transmitting the signal to the RFID reader transmission/reception control unit; and an RFID reader power control unit for controlling power, wherein when the RFID reader transmission/reception control unit receives a command for acquiring the RFID tag information, the RFID reader power control unit applies power to the power amplifier.

    摘要翻译: 提供了一种用于移动射频识别(RFID)读取器和使用其的RFID读取器的功率控制方法。 RFID读取器包括:RFID读取器发送/接收控制单元,用于创建要发送到RFID标签的消息并向终端控制单元发送RFID标签信息; 用于对所创建的消息进行编码和调制的读取器发送单元; 用于放大输出信号的功率放大器; 读取器接收单元,用于解调和解码信号并将信号发送到RFID读取器发送/接收控制单元; 以及用于控制电力的RFID读取器功率控制单元,其中当RFID读取器发送/接收控制单元接收到用于获取RFID标签信息的命令时,RFID读取器功率控制单元向功率放大器施加电力。

    APPARATUS AND METHOD FOR LOCATING RFID TAG
    47.
    发明申请
    APPARATUS AND METHOD FOR LOCATING RFID TAG 失效
    用于定位RFID标签的设备和方法

    公开(公告)号:US20100214067A1

    公开(公告)日:2010-08-26

    申请号:US12646784

    申请日:2009-12-23

    IPC分类号: H04Q5/22

    摘要: Provided are a Radio Frequency Identification (RFID) tag and apparatus and method for locating a RFID tag without comparing arrival times of blink signals transmitted from the RFID tag in order to quickly trace a location of the RFID tag. The RFID tag includes a tag ID generator configured to generate a tag ID of the RFID tag, a blink generator configured to generate a plurality of sub-blink signals that form the blink signal, a sub-blink ID generator configured to generate sub-blink IDs for the generated sub-blink signals, a sub-blink ID inserter configured to insert the generated sub-blink IDs into the sub-blink signals, and a transmitter configured to transmit the blink signal having the tag ID and the sub-blink IDs.

    摘要翻译: 提供了一种用于定位RFID标签的射频识别(RFID)标签和装置和方法,而不比较从RFID标签发送的眨眼信号的到达时间,以便快速跟踪RFID标签的位置。 RFID标签包括被配置为生成RFID标签的标签ID的标签ID发生器,被配置为生成形成眨眼信号的多个子眨眼信号的眨眼发生器,被配置为生成眨眼的子眨眼ID生成器 生成的子眨眼信号的ID,被配置为将生成的眨眼ID插入到子眨眼信号中的子眨眼ID插入器;以及发送器,被配置为发送具有标签ID和子眨眼ID的眨眼信号 。

    SENSOR NODE INCLUDED IN SENSOR NETWORK, UPDATE SERVER UPDATING THE SAME, AND METHOD OF UPDATING SENSOR NODE
    48.
    发明申请
    SENSOR NODE INCLUDED IN SENSOR NETWORK, UPDATE SERVER UPDATING THE SAME, AND METHOD OF UPDATING SENSOR NODE 有权
    传感器网络中包含的传感器节点,更新其更新服务器以及更新传感器节点的方法

    公开(公告)号:US20100153088A1

    公开(公告)日:2010-06-17

    申请号:US12630328

    申请日:2009-12-03

    IPC分类号: G06F9/44 G06F9/45 G06F15/16

    CPC分类号: G06F8/65

    摘要: Provided are a sensor node included in a sensor network, an update server updating the sensor node, and a method of updating a sensor node. The update server updating a sensor node included in a sensor network includes an execution code manager managing execution codes for a plurality of sensor nodes included in the sensor network, a rule generator generating an update rule based on a result of comparing an existing execution code managed by the execution code manager with an update execution code required for a new function update of the sensor node, and a downloader causing the sensor node to download the update rule generated by the rule generator. Accordingly, an execution code can be updated by a small amount of data transmission.

    摘要翻译: 提供了传感器网络中包括的传感器节点,更新传感器节点的更新服务器以及更新传感器节点的方法。 更新传感器网络中包括的传感器节点的更新服务器包括管理传感器网络中包括的多个传感器节点的执行代码的执行代码管理器,基于比较现有执行代码管理的结果生成更新规则的规则生成器 执行代码管理器具有传感器节点的新功能更新所需的更新执行代码,以及导致传感器节点下载规则生成器生成的更新规则的下载器。 因此,可以通过少量的数据传输来更新执行代码。

    Method for estimating number of tags in slotted aloha-based RFID system
    49.
    发明授权
    Method for estimating number of tags in slotted aloha-based RFID system 失效
    用于估计基于时隙的aloha RFID系统中的标签数量的方法

    公开(公告)号:US07675403B2

    公开(公告)日:2010-03-09

    申请号:US11497749

    申请日:2006-08-02

    IPC分类号: H04Q5/22

    摘要: Provided is a method for estimating the number of tags in a slotted Aloha-based RFID system, which can estimate the number of tags through a new statistical average scheme using the number of slots, the measured number of empty slots, and the measured number of ID slots. The estimating method includes the steps of: a) setting the number (N) of slots, the measured number (c0) of empty slots, and the measured number (c1) of ID slots as parameters; and estimating the number (n) of the tags by substituting the set values into n=(N−1)/(c0/c1).

    摘要翻译: 提供了一种用于估计基于时隙的基于Aloha的RFID系统中的标签的数量的方法,其可以使用新的统计平均方案来估计标签的数量,该方案使用时隙数,所测量的空时隙数, ID插槽。 该估计方法包括以下步骤:a)将时隙数(N),空时隙的测量次数(c0)和ID时隙的测量次数(c1)设置为参数; 并且通过将设定值代入n =(N-1)/(c0 / c1)来估计标签的数量(n)。