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    • 6. 发明申请
    • RADIO FREQUENCY IDENTIFICATION TAG AND READER, METHOD OF IDENTIFYING TAG, ANTI-COLLISION METHOD FOR TAG
    • 无线电频率识别标签和读取器,识别标签的方法,标签的抗冲突方法
    • WO2008082089A1
    • 2008-07-10
    • PCT/KR2007/006265
    • 2007-12-05
    • CHUNG-ANG UNIVERSITY INDUSTRY-ACADEMY COOPERATION FOUNDATIONKIM, Sung KwonSHIN, Jae-DongYEO, Sang-Soo
    • KIM, Sung KwonSHIN, Jae-DongYEO, Sang-Soo
    • G06K17/00
    • G06K7/0008G06K7/10049
    • An RPID tag and a reader, a method of identifying an RFID tag, and an anti-collision method of an RFID tag are provided. An epoch size determination unit determines the size of an epoch signal having a preset size. An identifier request signal generator generates an identifier request signal including a prefix and a number of a frame to perform selected identification among frame numbers intrinsically allocated to frames of the determined quantity within the size of an epoch signal. If tag identifiers are received from a plurality of RFID tags through a frame to perform identification, an anti-collision unit generates a sub-prefix by increasing a bit of a prefix included in an identifier request signal and then enables the identifier request signal generator to generate an identifier request signal including a sub-prefix and a number of a frame to perform identification. A communication unit transmits an epoch signal and an identifier request signal including a prefix and a number of a frame to perform identification, and receives a tag identifier including a prefix from an RFID tag, having received the identifier request signal. If a prefix of a tag identifier received through a frame to perform identification is identical to the prefix included in the identifier request signal, a tag identification unit identifies an RFID tag, having transmitted the tag identifier.
    • 提供了RFID标签和读取器,识别RFID标签的方法以及RFID标签的防碰撞方法。 时期大小确定单元确定具有预设大小的时代信号的大小。 标识符请求信号发生器生成包括前缀和帧数的标识符请求信号,以在时间信号的大小内固有地分配给确定量的帧的帧号之间执行所选择的标识。 如果通过帧从多个RFID标签接收到标签标识符以进行识别,则反冲突单元通过增加包含在标识符请求信号中的前缀的比特来生成子前缀,然后使标识符请求信号发生器 生成包括子前缀和数量的标识符请求信号,以进行识别。 通信单元发送包含前缀和数量的时标信号和标识符请求信号以进行识别,并且从已经接收到标识符请求信号的RFID标签接收包括前缀的标签标识符。 如果通过帧接收到的用于执行识别的标签标识符的前缀与包括在标识符请求信号中的前缀相同,则标签识别单元识别已经发送了标签标识符的RFID标签。
    • 9. 发明申请
    • NON-COHERENT DETECTION APPARATUS AND METHOD FOR IEEE 802.15.4 LR-WPAN BPSK RECEIVER
    • 用于IEEE 802.15.4 LR-WPAN BPSK接收机的非相关检测装置和方法
    • WO2010120098A2
    • 2010-10-21
    • PCT/KR2010/002271
    • 2010-04-13
    • CHUNG-ANG UNIVERSITY INDUSTRY-ACADEMY COOPERATION FOUNDATIONCHANG, Tae-GyuJEON, Hyeon-JinDEMEECHAI, Tanee
    • CHANG, Tae-GyuJEON, Hyeon-JinDEMEECHAI, Tanee
    • H04L27/22
    • H04L27/2331
    • A non-coherent detection apparatus and method for an IEEE 802.15.4 low-rate wireless personal area network (LR-WPAN) binary phase shift keying (BPSK) receiver, the non-coherent detection apparatus including: a correlation unit obtaining a differential phase signal by multiplying a complex conjugate value of a delay signal, summing-up resultant values that are obtained by multiplying each component of the differential phase signal by each component of a correlation sequence corresponding to the received signal and outputting a correlation signal, a frequency offset estimator estimating a frequency offset based on a value that is obtained by accumulatively summing-up the correlation signals corresponding to preamble portions of the received signal from among the correlation signals, and a signal detector detecting an original signal from the received signal based on a size of a real-number part of a resultant value that is obtained by multiplying the frequency offset estimated by the frequency offset estimator by the correlation signal corresponding to a PHY payload portion of the received signal from among the correlation signals.
    • 一种用于IEEE 802.15.4低速无线个域网(LR-WPAN)二进制相移键控(BPSK)接收机的非相干检测装置和方法,所述非相干检测装置包括:相关单元,获得差分相位 通过将延迟信号的复共轭值相乘来求和,将通过将差分相位信号的每个分量乘以与接收信号相对应的相关序列的每个分量并输出相关信号获得的合成值,频率偏移 估计器基于通过从相关信号中累加对应于接收信号的前导码部分的相关信号获得的值,以及信号检测器,基于接收信号的尺寸检测原始信号,从而估计频率偏移 通过乘以由频率估计估计的频率偏移而获得的结果值的实数部分 相关信号对应于来自相关信号的接收信号的PHY有效载荷部分的相关信号。
    • 10. 发明申请
    • APPARATUS AND METHOD FOR DETECTING PROGRAM PLAGIARISM THROUGH MEMORY ACCESS LOG ANALYSIS
    • 通过记忆访问日志分析来检测程序片段的装置和方法
    • WO2008088121A1
    • 2008-07-24
    • PCT/KR2007/005379
    • 2007-10-30
    • CHUNG-ANG UNIVERSITY INDUSTRY-ACADEMY COOPERATION FOUNDATIONHAN, Sang YongPARK, Sung Yun
    • HAN, Sang YongPARK, Sung Yun
    • G06F11/00
    • G06F21/12G06F2221/2101
    • An apparatus and method for detecting program plagiarism through memory access log analysis is provided. A data extractor extracts an access log of an original program and an access log of a target program to be compared with the original program from a memory accessed by the programs. A common string detector enumerates values, which are obtained from the access logs extracted from the original program and the target program, into strings and detects a common string that commonly exists in the strings. A discontinuity calculator calculates a discontinuity value that indicates a distance between the strings by using an array of the detected common strings. A plagiarism determining unit determines that the target program is plagiarized if the calculated discontinuity value is less than a predetermined reference value. Accordingly, even when a source code is not obtained, program plagiarism can be accurately and rapidly detected by analyzing a memory access log of a program.
    • 提供了一种通过存储器访问日志分析来检测程序剽窃的装置和方法。 数据提取器从程序访问的存储器中提取要与原始程序进行比较的原始程序的访问日志和目标程序的访问日志。 常见的字符串检测器枚举从原始程序和目标程序提取的访问日志中获取的值,并检测字符串中通常存在的公共字符串。 不连续计算器通过使用检测到的公共串的阵列来计算指示字符串之间的距离的不连续值。 如果所计算的不连续性值小于预定参考值,则剽窃确定单元确定目标节目被剽窃。 因此,即使没有获得源代码,也可以通过分析程序的存储器访问日志来准确,快速地检测程序剽窃。