公开(公告)号：US20100127934A1

公开(公告)日：2010-05-27

申请号：US12580310

申请日：2009-10-16

申请人： Seung-il MYONG ,  Sang-hyun MO ,  Dong-beom SHIN ,  Jae-heum LEE ,  Heyung-sub LEE ,  Jong-suk CHAE

发明人： Seung-il MYONG ,  Sang-hyun MO ,  Dong-beom SHIN ,  Jae-heum LEE ,  Heyung-sub LEE ,  Jong-suk CHAE

IPC分类号： G01S3/02

CPC分类号： G01S5/021 ,  G01S5/06

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20100127831A1

公开(公告)日：2010-05-27

申请号：US12562105

申请日：2009-09-17

申请人： Jong-sub CHA ,  Seung-il MYONG ,  Heyung-sub LEE ,  Sang-hyun MO ,  Jong-suk CHAE

发明人： Jong-sub CHA ,  Seung-il MYONG ,  Heyung-sub LEE ,  Sang-hyun MO ,  Jong-suk CHAE

IPC分类号： H04B1/707 ,  H04Q5/22

CPC分类号： H04J13/10 ,  H04B1/707 ,  H04J13/0022

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20100158165A1

公开(公告)日：2010-06-24

申请号：US12579840

申请日：2009-10-15

申请人： Seung-il MYONG ,  Jong-sub CHA ,  Hoe-sung YANG ,  Kang-bok LEE ,  Heyung-sub LEE ,  Jong-suk CHAE

发明人： Seung-il MYONG ,  Jong-sub CHA ,  Hoe-sung YANG ,  Kang-bok LEE ,  Heyung-sub LEE ,  Jong-suk CHAE

IPC分类号： H04L7/00 ,  H04L27/06

CPC分类号： H04L27/0014 ,  H04L2027/0026 ,  H04L2027/0046

摘要： Disclosed is a wireless signal receiving apparatus, and more particularly, disclosed is a parallel automatic frequency offset estimation apparatus and method for tracking a frequency offset in an early stage by calculating, in parallel, frequency offsets of a received signal. The parallel automatic frequency offset estimation apparatus includes a receiving unit to receive a data frame; and a frequency offset estimation unit to calculate, in parallel, frequency and phase deviations at different bit intervals within a particular section of the received data frame, to add together the frequency and phase deviations to obtain a first sum of the frequency and phase deviations, and to add the first sum to a frequency phase deviation calculated for each bit after the particular section in the received data frame to obtain a second sum of the frequency and phase deviations. Accordingly, transmission frequency tracking can be performed at higher speed, compared to the conventional systems in which frequency offset acquisition is carried out in stages. Also, accurate tracking of a transmission frequency is possible in an initial frame.

摘要翻译： 公开了一种无线信号接收装置，更具体地，公开了一种并行自动频率偏移估计装置和方法，用于通过并行计算接收信号的频率偏移来跟踪早期的频率偏移。 并行自动频率偏移估计装置包括：接收单元，用于接收数据帧; 以及频率偏移估计单元，用于并行地计算在接收数据帧的特定部分内的不同比特间隔处的频率和相位偏差，以将频率和相位偏差相加以获得频率和相位偏差的第一和， 并且将第一和加到针对接收数据帧中的特定部分之后的每个比特计算的频率相位偏移，以获得频率和相位偏差的第二和。 因此，与分阶段进行频率偏移获取的常规系统相比，可以以更高的速度执行传输频率跟踪。 此外，在初始帧中可以准确地跟踪传输频率。

公开(公告)号：US20100141404A1

公开(公告)日：2010-06-10

申请号：US12629451

申请日：2009-12-02

申请人： Kang-bok LEE ,  Sang-yeoun LEE ,  Heyung-sub LEE ,  Jong-suk CHAE

发明人： Kang-bok LEE ,  Sang-yeoun LEE ,  Heyung-sub LEE ,  Jong-suk CHAE

IPC分类号： H04Q5/22

CPC分类号： H04Q9/00 ,  G06K19/0717 ,  H04Q2209/47 ,  H04Q2209/823

摘要： A method of storing sensor data in a sensor tag is provided. The method comprises receiving new sensor data output from a sensor, comparing the received new sensor data with immediately previous sensor data to determine whether the comparison result satisfies a predetermined criterion, and storing the new sensor data in a tag memory when it is determined that the criterion is satisfied. Accordingly, efficient use of the tag memory is possible.

摘要翻译： 提供了一种将传感器数据存储在传感器标签中的方法。 该方法包括接收从传感器输出的新的传感器数据，将接收到的新传感器数据与紧接在前的传感器数据进行比较，以确定比较结果是否满足预定标准，并且当确定新传感器数据被确定为 标准满足 因此，标签存储器的有效使用是可能的。