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    • 1. 发明申请
    • RECEIVER FOR REAL TIME LOCATING SYSTEM AND METHOD OF RECEIVING SIGNAL IN REAL TIME LOCATING SYSTEM
    • 实时定位系统的接收器和实时定位系统中接收信号的方法
    • US20110150046A1
    • 2011-06-23
    • US12886698
    • 2010-09-21
    • Sang Hyun MO
    • Sang Hyun MO
    • H04B1/707
    • H04B1/7093H04B1/7097H04B2201/70715
    • Provided are a receiver for a real time locating system (RTLS) and a method of receiving a signal in the RTLS. The receiver includes a down converter converting a radio frequency (RF) signal into a base band signal, a matched filter filtering the converted signal using an optimal receiving filter in view of a signal-to-noise ratio (SNR) such as a shaping filter used for a transmitter, an adaptive transversal filter (ATF) estimating an interference signal with an output of the matched filter, and filtering the output to remove interference of a heterogeneous signal of the same frequency band, a de-spreader multiplying an output of the matched filter and a code according to DSSS modulation used for spreading when a tag signal is modulated, and performing chip-matched filtering to obtain a value of correlation energy, and a detector detecting original transmission data using the correlation energy value.
    • 提供了用于实时定位系统(RTLS)的接收机以及在RTLS中接收信号的方法。 接收机包括将射频(RF)信号转换为基带信号的下变频转换器,考虑到诸如成形滤波器的信噪比(SNR),使用最佳接收滤波器对转换的信号进行滤波的匹配滤波器 用于发射机,自适应横向滤波器(ATF),用匹配滤波器的输出估计干扰信号,并对输出进行滤波以消除相同频带的异构信号的干扰;解扩器将 匹配滤波器和根据用于在标签信号被调制时进行扩频的DSSS调制的码,并且执行码片匹配滤波以获得相关能量的值;以及检测器,使用相关能量值检测原始发送数据。
    • 3. 发明申请
    • POSITIONING SYSTEM, COMMUNICATION SIGNAL RECEIVER FOR POSITIONING SYSTEM, AND POSITION CALCULATION METHOD
    • 定位系统,定位系统通信信号接收机和位置计算方法
    • US20100127934A1
    • 2010-05-27
    • US12580310
    • 2009-10-16
    • Seung-il MYONGSang-hyun MODong-beom SHINJae-heum LEEHeyung-sub LEEJong-suk CHAE
    • Seung-il MYONGSang-hyun MODong-beom SHINJae-heum LEEHeyung-sub LEEJong-suk CHAE
    • G01S3/02
    • G01S5/021G01S5/06
    • A positioning system is provided which is capable of calculating the position of a target object even though it does not detect some synchronous signal necessary for position calculation. A communication signal receiver which provides information used in the position calculation is also provided. The positioning system includes a plurality of communication signal receivers each to detect a communication signal from a target object to be tracked and synchronous signals repeatedly transmitted for timing synchronization, and to acquire a receiving time interval between the synchronous signals, a receiving time interval between the synchronization signal and the communication signal, and synchronization signal identification information; and a position calculator to calculate a position of the target object by calculating a receiving time error of the communication signal from the receiving time interval between the synchronous signals, the receiving time interval between the synchronization signal and the communication signal, and the synchronization signal identification information.
    • 提供了一种能够计算目标对象的位置的定位系统,即使它没有检测到位置计算所需的一些同步信号。 还提供了提供在位置计算中使用的信息的通信信号接收器。 定位系统包括多个通信信号接收器,每个通信信号接收器用于检测来自要跟踪的目标对象的通信信号和重复发送的用于定时同步的同步信号,并且获取同步信号之间的接收时间间隔, 同步信号和通信信号,同步信号识别信息; 以及位置计算器,通过从同步信号之间的接收时间间隔,同步信号和通信信号之间的接收时间间隔以及同步信号识别计算通信信号的接收时间误差来计算目标对象的位置 信息。
    • 4. 发明申请
    • ACTIVE RFID APPARATUS FOR IMPROVING PN CODE GNENRATION
    • 有效的RFID设备,用于改进PN代码
    • US20100127831A1
    • 2010-05-27
    • US12562105
    • 2009-09-17
    • Jong-sub CHASeung-il MYONGHeyung-sub LEESang-hyun MOJong-suk CHAE
    • Jong-sub CHASeung-il MYONGHeyung-sub LEESang-hyun MOJong-suk CHAE
    • H04B1/707H04Q5/22
    • H04J13/10H04B1/707H04J13/0022
    • An active radio frequency identification (RFID) apparatus having an additional transmitter in addition to a single transmitter is provided. The active RFID apparatus includes a first transmitter including a first pseudo noise (PN) code generator to generate a direct sequence spread spectrum (DSSS) introduced by ISO/IEC (International Organization for Standardization/International Electrotechnical Commission) 24730-2 or ISO/IEC 18185-5 type B; and a second transmitter including a second PN code generator to perform an AND operation on an initial value and a fed back value and shift the resultant value of the AND operation, to perform an XOR operation on particular bits from among the shifted bits and to perform an XOR operation again on the shifted bits and the resulting value of the XOR operation to finally generate a PN code. Accordingly, where an additional PN code is added besides an existing PN code, a PN code having excellent auto correlation characteristics allowing discrimination of the PN code itself and cross-correlation characteristics providing a code discrimination ability with respect to another code can be generated.
    • 提供了除了单个发射机之外还具有附加发射机的有源射频识别(RFID)装置。 有源RFID装置包括第一发射机,其包括第一伪噪声(PN)码发生器,以产生由ISO / IEC(国际标准化组织/国际电工委员会)24730-2或ISO / IEC引入的直接序列扩频(DSSS) 18185-5型B; 以及第二发送器,包括第二PN码发生器,用于对初始值和反馈值执行AND运算,并且移位AND运算的结果值,以对从移位中的特定比特执行异或运算,并执行 对移位的位再次进行XOR操作,并且产生XOR运算的结果值,以最终生成PN码。 因此,除了现有的PN码之外附加附加的PN码,可以产生具有能够区分PN码本身的优良自相关特性的PN码和提供相对于其他码的码识别能力的互相关特性。
    • 5. 发明授权
    • Receiver for real time locating system and method of receiving signal in real time locating system
    • 接收机实时定位系统及实时定位系统接收信号的方法
    • US08798118B2
    • 2014-08-05
    • US12886698
    • 2010-09-21
    • Sang Hyun Mo
    • Sang Hyun Mo
    • H04B1/00
    • H04B1/7093H04B1/7097H04B2201/70715
    • Provided are a receiver for a real time locating system (RTLS) and a method of receiving a signal in the RTLS. The receiver includes a down converter converting a radio frequency (RF) signal into a base band signal, a matched filter filtering the converted signal using an optimal receiving filter in view of a signal-to-noise ratio (SNR) such as a shaping filter used for a transmitter, an adaptive transversal filter (ATF) estimating an interference signal with an output of the matched filter, and filtering the output to remove interference of a heterogeneous signal of the same frequency band, a de-spreader multiplying an output of the matched filter and a code according to DSSS modulation used for spreading when a tag signal is modulated, and performing chip-matched filtering to obtain a value of correlation energy, and a detector detecting original transmission data using the correlation energy value.
    • 提供了用于实时定位系统(RTLS)的接收机以及在RTLS中接收信号的方法。 接收机包括将射频(RF)信号转换为基带信号的下变频转换器,考虑到诸如成形滤波器的信噪比(SNR),使用最佳接收滤波器对转换的信号进行滤波的匹配滤波器 用于发射机,自适应横向滤波器(ATF),用匹配滤波器的输出估计干扰信号,并对输出进行滤波以消除相同频带的异构信号的干扰;解扩器将 匹配滤波器和根据用于在标签信号被调制时进行扩频的DSSS调制的码,并且执行码片匹配滤波以获得相关能量的值;以及检测器,使用相关能量值检测原始发送数据。
    • 6. 发明授权
    • Active RFID apparatus for improving PN code generation
    • 有源RFID设备,用于改善PN码生成
    • US08401053B2
    • 2013-03-19
    • US12562105
    • 2009-09-17
    • Jong-sub ChaSeung-il MyongHeyung-sub LeeSang-hyun MoJong-suk Chae
    • Jong-sub ChaSeung-il MyongHeyung-sub LeeSang-hyun MoJong-suk Chae
    • H04B1/00
    • H04J13/10H04B1/707H04J13/0022
    • An active radio frequency identification (RFID) apparatus having an additional transmitter in addition to a single transmitter is provided. The active RFID apparatus includes a first transmitter including a first pseudo noise (PN) code generator to generate a direct sequence spread spectrum (DSSS) introduced by ISO/IEC (International Organization for Standardization/International Electrotechnical Commission) 24730-2 or ISO/IEC 18185-5 type B; and a second transmitter including a second PN code generator to perform an AND operation on an initial value and a fed back value and shift the resultant value of the AND operation, to perform an XOR operation on particular bits from among the shifted bits and to perform an XOR operation again on the shifted bits and the resulting value of the XOR operation to finally generate a PN code. Accordingly, where an additional PN code is added besides an existing PN code, a PN code having excellent auto correlation characteristics allowing discrimination of the PN code itself and cross-correlation characteristics providing a code discrimination ability with respect to another code can be generated.
    • 提供了除了单个发射机之外还具有附加发射机的有源射频识别(RFID)装置。 有源RFID装置包括第一发射机,其包括第一伪噪声(PN)码发生器,以产生由ISO / IEC(国际标准化组织/国际电工委员会)24730-2或ISO / IEC引入的直接序列扩频(DSSS) 18185-5型B; 以及第二发送器,包括第二PN码发生器,用于对初始值和反馈值执行AND运算,并且移位AND运算的结果值,以对从移位中的特定比特执行异或运算,并执行 对移位的位再次进行XOR操作,并且产生XOR运算的结果值,以最终生成PN码。 因此,除了现有的PN码之外附加附加的PN码,可以产生具有能够区分PN码本身的优良自相关特性的PN码和提供相对于其他码的码识别能力的互相关特性。
    • 7. 发明申请
    • REAL TIME LOCATING SYSTEM, READER, RFID TAG AND DRIVING METHOD OF RFID TAG FOR LOCATING
    • 用于定位的RFID标签的实时定位系统,读取器,RFID标签和驱动方法
    • US20110181392A1
    • 2011-07-28
    • US12694893
    • 2010-01-27
    • Jong Sub CHASang Hyun MoHeyung Sub Lee
    • Jong Sub CHASang Hyun MoHeyung Sub Lee
    • G08B5/22
    • G01S13/825G06K7/0008
    • Provided are a real-time locating systems, a reader, an RFID tag and a driving method of the RFID tag for locating. The locating system includes an RFID tag, a plurality of readers, and a location processor. The RFID tag outputs a first or second transmission message frame according to whether value added information exists. The readers are disposed at different locations, receive and analyze the first or second transmission message frame to transmit extracted information and reception time information corresponding to the extracted information to a location processor. The location processor analyzes the information which is extracted through the readers and the reception time information to calculate location information or the value added information related to the RFID tag.
    • 提供了用于定位的RFID标签的实时定位系统,读取器,RFID标签和驱动方法。 定位系统包括RFID标签,多个读取器和位置处理器。 RFID标签根据增值信息是否存在输出第一或第二传输消息帧。 读取器设置在不同的位置,接收和分析第一或第二传输消息帧以将提取的信息和与提取的信息相对应的接收时间信息发送到位置处理器。 位置处理器分析通过读取器提取的信息和接收时间信息来计算与RFID标签相关的位置信息或增值信息。
    • 9. 发明申请
    • APPARATUS AND METHOD FOR TRANSMITTING PACKET DATA IN WIRELESS SENSOR NETWORK
    • 在无线传感器网络中发送分组数据的装置和方法
    • US20110110218A1
    • 2011-05-12
    • US12794997
    • 2010-06-07
    • Hyung-Rae ParkJongsub ChaSang-Hyun MoSeung-Il MyongHeyung-Sub LeeJong-Suk Chae
    • Hyung-Rae ParkJongsub ChaSang-Hyun MoSeung-Il MyongHeyung-Sub LeeJong-Suk Chae
    • H04J11/00H04B7/00
    • H04J13/0048
    • Provided is an apparatus and method for transmitting packet data in a WSN. The apparatus for transmitting packet data in a WSN includes: a serial-to-parallel converter to parallel-convert information and output the converted information to two channel paths; a Walsh code pair generation unit to select an arbitrary Walsh code pair, mix the selected Walsh code pair with a pseudo noise (PN) code, and output one Walsh code to one channel path and the other Walsh code to the other channel path; a first mixer to mix the signals inputted to two channel paths, and generate a spread symbol for each path; a delay to delay the other channel path signal by a predetermined time; and a transmission unit to convert one channel path signal and the other channel path signal delayed by the delay into transmission frequency band signals, and transmit the converted signals as wireless signals.
    • 提供了一种在WSN中发送分组数据的装置和方法。 用于在WSN中发送分组数据的装置包括:并行转换信息并将转换的信息输出到两个信道路径的串并转换器; 沃尔什码对生成单元,用于选择任意的沃尔什码对,将所选择的沃尔什码对与伪噪声(PN)码进行混合,并将一个沃尔什码输出到一个信道路径,另一个沃尔什码输出到另一个信道路径; 第一混频器,混合输入到两个声道路径的信号,并产生每个路径的扩展符号; 将另一个信道路径信号延迟预定时间的延迟; 以及发送单元,将一个信道路径信号和延迟了延迟的其他信道路径信号转换为发送频带信号,并将转换后的信号作为无线信号发送。