公开(公告)号：US20080316104A1

公开(公告)日：2008-12-25

申请号：US12096780

申请日：2006-12-08

申请人： Nak-Seon Seong ,  Choon-Sik Lim ,  Cheol-Sig Pyo ,  Jong-Suk Chae

发明人： Nak-Seon Seong ,  Choon-Sik Lim ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC分类号： H04B7/24

CPC分类号： G01S5/10

摘要： Provided is an apparatus and method for computing the location of a radio beacon by using received signal strength (RSS) and multiple frequencies. The apparatus and method of the present invention computes the location of a radio beacon without limitation in distance by using multiple frequencies and received signal strength to resolve the problem of phase ambiguity. A radio beacon location computing system includes a plurality of base stations configured to receive signals of multiple frequencies transmitted from the radio beacon, and detect and output phase differences and received signal strength; and a location computing server configured to receive the phase differences and the received signal strength outputted from the respective base stations, acquire calculation distances based on the phase differences, remove phase ambiguity from the calculation distances based on the received signal strength, and compute the location of the radio beacon.

摘要翻译： 提供了一种通过使用接收信号强度（RSS）和多个频率来计算无线电信标的位置的装置和方法。 本发明的装置和方法通过使用多个频率和接收信号强度来计算无线电信标的位置而不限制距离，以解决相位模糊问题。 无线电信标位置计算系统包括：多个基站，被配置为接收从无线电信标发送的多个频率的信号，并检测和输出相位差和接收信号强度; 以及位置计算服务器，被配置为接收从各个基站输出的相位差和接收信号强度，基于相位差获取计算距离，基于接收到的信号强度从计算距离中消除相位模糊度，并且计算位置 的无线电信标。

公开(公告)号：US07427955B2

公开(公告)日：2008-09-23

申请号：US11297182

申请日：2005-12-07

申请人： Won-Kyu Choi ,  Nak-Seon Seong ,  Cheol-Sig Pyo ,  Jong-Suk Chae

发明人： Won-Kyu Choi ,  Nak-Seon Seong ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC分类号： H01Q1/38

CPC分类号： H01Q1/2216 ,  H01Q1/22 ,  H01Q9/0421 ,  H01Q21/065 ,  H01Q21/24

摘要： Provided is a dual polarization antenna realized by using four inverted F-type radiators and a Radio Frequency Identification (RFID) reader employing the dual polarization antenna. The dual polarization antenna includes a ground plate and four inverted F-type radiators set up on the ground plate. Currents of the same phase are fed to the first and second inverted F-type radiators each other. Currents of an inverted phase are fed to the third and fourth inverted F-type radiators each other. The four inverted F-type radiators form an angle of 90° with one another. The first and second inverted F-type radiators radiate electric wave of vertical polarization and the third and fourth inverted F-type radiators radiate electric wave of horizontal polarization. Since the dual polarization antenna has excellent orthogonal and isolation characteristics, the antenna can extend a transmission distance between the reader and the tag and improve a communication quality.

摘要翻译： 提供了通过使用四个反相F型辐射器实现的双极化天线和采用双极化天线的射频识别（RFID）读取器。 双极化天线包括接地板和设置在接地板上的四个倒F型散热器。 相同相位的电流彼此馈送到第一和第二倒置的F型散热器。 反相的电流相互馈送到第三和第四倒置的F型散热器。 四个倒F型散热器彼此形成90°的角度。 第一和第二倒F型辐射器辐射垂直极化电波，第三和第四反相F型辐射器辐射水平极化电波。 由于双极化天线具有优异的正交和隔离特性，所以天线可以扩展读取器和标签之间的传输距离，并提高通信质量。

公开(公告)号：US20080224870A1

公开(公告)日：2008-09-18

申请号：US12023821

申请日：2008-01-31

申请人： Junho Yeo ,  Josef Preishuber-Pfluegl ,  Alex Janek ,  Andreas Schuhai ,  Hae-Won Son ,  Jae-Young Jung ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae

发明人： Junho Yeo ,  Josef Preishuber-Pfluegl ,  Alex Janek ,  Andreas Schuhai ,  Hae-Won Son ,  Jae-Young Jung ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC分类号： G08B13/14

CPC分类号： G06K19/0723 ,  G06K19/0701

摘要： An apparatus and method for managing power of a radio frequency identification (RFID) tag are provided. It is possible for the apparatus for managing the power of the RFID tag to effectively reduce power consumption of the RFID tag by measuring the power strength of a radio frequency (RF) signal received from an RFID reader and adjusting a level of transmission power based on the measured power strength of the signal.

摘要翻译： 提供了一种用于管理射频识别（RFID）标签的功率的装置和方法。 用于管理RFID标签的功率的装置可以通过测量从RFID读取器接收的射频（RF）信号的功率强度来有效地降低RFID标签的功耗，并且基于 测量的信号功率强度。

公开(公告)号：US20080080441A1

公开(公告)日：2008-04-03

申请号：US11851370

申请日：2007-09-06

申请人： Jong-Jun Park ,  Jong-Oh Lee ,  Sun-Joong Kim ,  Cheol-Sig Pyo ,  Jong-Suk Chae

发明人： Jong-Jun Park ,  Jong-Oh Lee ,  Sun-Joong Kim ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC分类号： H04Q7/24

CPC分类号： H04W64/00 ,  H04W84/18

摘要： Provided are a localization apparatus for recognizing a location of a node in a sensor network and a method thereof. The method includes the steps of: a) selecting reference nodes from a plurality of anchor nodes to be used for triangulation; and b) obtaining location information of a target node by performing triangulation using the selected reference node, wherein in the step a), the reference nodes are selected by removing anchor nodes having obstacle factor from a plurality of the anchor nodes where the obstacle factor causes error in a distance measured by the target node.

摘要翻译： 提供一种用于识别传感器网络中的节点的位置的定位装置及其方法。 该方法包括以下步骤：a）从多个锚节点中选择用于三角测量的参考节点; 以及b）通过使用所选择的参考节点进行三角测量来获得目标节点的位置信息，其中在步骤a）中，通过从多个锚点节点中去除具有障碍因子的锚节点来选择参考节点，其中障碍因素导致 由目标节点测量的距离误差。

公开(公告)号：US20070120679A1

公开(公告)日：2007-05-31

申请号：US11600605

申请日：2006-11-16

申请人： Chan-Soo Shin ,  Hae-Won Son ,  Won-Kyu Choi ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae

发明人： Chan-Soo Shin ,  Hae-Won Son ,  Won-Kyu Choi ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC分类号： G08B13/14 ,  H05K11/00

CPC分类号： G06K7/0008

摘要： Provided are a method and apparatus for sharing a portable terminal in a Code Division Multiple Access (CDMA) and a mobile Radio Frequency Identification (RFID) system. The portable terminal includes: a CDMA mobile station system for performing CDMA communication; a mobile RFID system for performing a passive RFID reader function; a switching unit for switching an antenna to any one between the CDMA mobile station system and the mobile RFID system; and a control unit for controlling the switching unit to connect the antenna to the CDMA mobile station system when the portable terminal transmits/receives a signal to/from the base station, or connect the antenna to the mobile RFID system when the portable terminal transmits/receives a signal to/from an RFID tag.

摘要翻译： 提供了一种用于在码分多址（CDMA）和移动射频识别（RFID）系统中共享便携式终端的方法和装置。 便携式终端包括：用于执行CDMA通信的CDMA移动站系统; 用于执行无源RFID读取器功能的移动RFID系统; 用于将天线切换到CDMA移动站系统和移动RFID系统之间的任何一个的切换单元; 以及控制单元，用于当便携式终端向/从基站发送/接收信号时控制切换单元将天线连接到CDMA移动站系统，或者当便携式终端发送/接收来自基站的天线时将天线连接到移动RFID系统， 从RFID标签接收信号。

公开(公告)号：US20070080879A1

公开(公告)日：2007-04-12

申请号：US11526374

申请日：2006-09-25

申请人： Chan-Soo Shin ,  Won-Kyu Choi ,  Hae-Won Son ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae ,  Han-Phil Rhyu ,  Sung-Jun Heo ,  Byung-Je Lee

发明人： Chan-Soo Shin ,  Won-Kyu Choi ,  Hae-Won Son ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae ,  Han-Phil Rhyu ,  Sung-Jun Heo ,  Byung-Je Lee

IPC分类号： H01Q11/12

CPC分类号： H01Q11/18 ,  H01Q9/36 ,  H01Q9/40

摘要： Provided is an antenna for a Radio Frequency Identification (RFID) reader using an electrical loop. It includes an upper metal plate which functions as a radiator; a lower metal plate which is disposed apart from the upper metal plate by a predetermined distance and functions as a radiator; a ground plate disposed apart from the lower metal plate by a predetermined distance; and a feeding probe disposed at the center of the upper and lower metal plates. The antenna can perform radiation parallel to the earth's surface including other directions. Therefore, it is suitable for an RFID reader which recognizes an RFID tag attached in parallel to the earth's surface. The electrical loop antenna can control impedance matching, resonance frequency, antenna gain, and radiation pattern according to the distance between metal plates, size of the metal plates, thickness of a feeding probe, and how the metal plates are arranged.

摘要翻译： 提供了一种使用电气回路的射频识别（RFID）读取器的天线。 它包括用作散热器的上金属板; 下金属板，其与上金属板隔开预定距离设置并用作散热器; 接地板，与所述下金属板隔开预定距离; 以及设置在上下金属板的中心的供给探针。 天线可以执行与地球表面平行的辐射，包括其他方向。 因此，它适用于识别与地球表面平行附接的RFID标签的RFID读取器。 电气环路天线可以根据金属板之间的距离，金属板的尺寸，馈电探针的厚度以及金属板的布置方式，来控制阻抗匹配，谐振频率，天线增益和辐射图。

公开(公告)号：US20070069859A1

公开(公告)日：2007-03-29

申请号：US11526517

申请日：2006-09-25

申请人： Ji-Hoon Bae ,  Hee-Sook Mo ,  Dong-Han Lee ,  Chan-Won Park ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae

发明人： Ji-Hoon Bae ,  Hee-Sook Mo ,  Dong-Han Lee ,  Chan-Won Park ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC分类号： H04Q5/22

CPC分类号： H04B5/0062 ,  H04B17/318 ,  H04L1/0001 ,  H04L1/0025 ,  H04L1/0057 ,  H04L1/1607

摘要： Provided are a mobile RFID reader and a control method thereof. The mobile RFID reader includes: a reader controller for beginning a reader operation to communicate with a tag in response to a command of a terminal controller of the wireless communication terminal; an anti-collision state machine for controlling collision among a plurality of tags, and transferring the result of communication with the tag to the reader controller; a reader transmitter for generating a reader command message decided at the anti-collision state machine, and coding and modulating the generated reader command message; a reader receiver for demodulating and decoding a tag signal received through an antenna, and reporting a tag response state to the anti-collision state machine; and a channel controller for selecting a channel to use to communicate with a tag in response to a command of the reader controller.

摘要翻译： 提供了一种移动RFID读取器及其控制方法。 移动RFID读取器包括：读取器控制器，用于响应于无线通信终端的终端控制器的命令开始读取器操作以与标签通信; 用于控制多个标签之间的冲突并将与标签的通信结果传送给读取器控制器的防冲突状态机; 读取器发送器，用于生成在反冲突状态机处决定的读取器命令消息，以及对生成的读取器命令消息进行编码和调制; 读取器接收器，用于对通过天线接收的标签信号进行解调和解码，并将标签响应状态报告给防冲突状态机; 以及频道控制器，用于响应于读取器控制器的命令，选择用于与标签通信的频道。

公开(公告)号：US20070046543A1

公开(公告)日：2007-03-01

申请号：US11297517

申请日：2005-12-07

申请人： Won-Kyu Choi ,  Nak-Seon Seong ,  Cheol-Sig Pyo ,  Jong-Suk Chae

发明人： Won-Kyu Choi ,  Nak-Seon Seong ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC分类号： H01Q1/38

CPC分类号： H01Q9/0421 ,  H01Q1/22 ,  H01Q9/0442

摘要： Provided are a Planar Inverted-F Antenna (PIFA), a Radio Frequency Identification (RFID) tag using the PIFA. The present invention miniaturizes the antenna by using a meander line extended from a radiating edge of a radiation antenna and adjusting a resonant frequency of the antenna, and it performs impedance matching by adjusting capacitive reactance of the antenna. Also, it can perform impedance matching by using a stub having a slot formed therein and adjusting inductive reactance and capacitive reactance of the antenna. The present invention miniaturizes the antenna by using a plurality of shorting plates for shorting the radiation patch from a grounding surface and adjusting the resonant frequency of the antenna. The present invention also provides an inexpensive PIFA antenna with an excellent radiation efficiency by forming the radiation patch in the form of metal sheet in the antenna and floating the radiation patch in the air.

摘要翻译： 提供了使用PIFA的平面倒F天线（PIFA），射频识别（RFID）标签。 本发明通过使用从辐射天线的辐射边缘延伸的曲折线并调整天线的谐振频率来使天线小型化，并且通过调整天线的电容性电抗来执行阻抗匹配。 此外，它可以通过使用其中形成有槽的短截线来进行阻抗匹配，并且调整天线的感抗和电抗。 本发明通过使用多个短路板来使天线小型化，从而使接地面短路放电片并调节天线的谐振频率。 本发明还通过在天线中形成金属片形式的辐射贴片并且将辐射贴片浮在空中来提供具有优异辐射效率的便宜的PIFA天线。

公开(公告)号：US08026850B2

公开(公告)日：2011-09-27

申请号：US12096777

申请日：2006-12-08

申请人： Nak-Seon Seong ,  Choon-Sik Lim ,  Cheol-Sig Pyo ,  Jong-Suk Chae

发明人： Nak-Seon Seong ,  Choon-Sik Lim ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC分类号： G01S1/24

CPC分类号： G01S5/06 ,  G01S5/14 ,  H04W64/00

摘要： Provided is an apparatus and method for computing the location of a radio beacon by using Time Difference Of Arrival (TDOA) and multiple frequencies. The apparatus and method of the present invention compute the location of a radio beacon without limitation in distance by using multiple frequencies and time difference of arrival to resolve the problem of phase ambiguity. A radio beacon location computing system includes a plurality of base stations configured to receive signals of multiple frequencies transmitted from the radio beacon, and detect and output phase differences and arrival time; and a location computing server configured to receive the phase differences and the arrival time outputted from the respective base stations, acquire calculation distances based on the phase differences, remove phase ambiguity from the calculation distances based on the arrival time, and compute the location of the radio beacon.

摘要翻译： 提供了一种通过使用到达时差（TDOA）和多个频率来计算无线电信标的位置的装置和方法。 本发明的装置和方法通过使用多个频率和到达时间差来计算无线电信标的位置，而不限于距离，以解决相位模糊问题。 无线电信标位置计算系统包括多个基站，被配置为接收从无线电信标发送的多个频率的信号，并且检测和输出相位差和到达时间; 以及位置计算服务器，被配置为接收从各个基站输出的相位差和到达时间，基于相位差获取计算距离，基于到达时间从计算距离中消除相位模糊度，并且计算 无线电信标。

公开(公告)号：US07933271B2

公开(公告)日：2011-04-26

申请号：US11487534

申请日：2006-07-13

申请人： Chang-Sub Shin ,  Hyun Lee ,  Han-Byeog Cho ,  Hyuk-Joon Lee ,  Cheol-Sig Pyo ,  Jong-Suk Chae

发明人： Chang-Sub Shin ,  Hyun Lee ,  Han-Byeog Cho ,  Hyuk-Joon Lee ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC分类号： H04L12/28 ,  H04B7/00 ,  H04Q7/00 ,  H04Q7/20

CPC分类号： H04W40/26

摘要： Provided is a Media Access Control (MAC) forwarding method for multi-hop routing in a communication system between vehicles. The method includes the steps of: a) receiving a frame from all nodes and checking whether there are duplicate frames; b) partly updating forwarding cache table (FCT) information, or updating SNT information and checking whether a destination address is a corresponding node; c) updating the FCT information, transmitting an Ack signal and transferring the frame to the upper layer, or searching whether the destination address is registered as “d_addr”; d) updating the FCT information and transmitting a delay ACK frame or checking whether the transmitted frame is a flooding frame; and e) updating the FCT information, checking whether the other node does not transmit the “d_ack” and inserting a flooding frame, otherwise, updating the FCT information and abandoning the frame.

摘要翻译： 提供了一种用于车辆之间的通信系统中的多跳路由的媒体接入控制（MAC）转发方法。 该方法包括以下步骤：a）从所有节点接收帧并检查是否存在重复帧; b）部分更新转发高速缓存表（FCT）信息，或更新SNT信息并检查目的地址是否是对应节点; c）更新FCT信息，发送Ack信号并将帧传送到上层，或者搜索目的地地址是否被注册为“d_addr”; d）更新FCT信息并发送延迟ACK帧或检查所发送的帧是否是泛洪帧; 以及e）更新FCT信息，检查其他节点是否不发送“d_ack”并插入洪泛帧，否则更新FCT信息并放弃该帧。