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1. 发明授权

US08653946B2 Passive RFID reader and operation control method therefor 失效
标题翻译：被动RFID阅读器及其操作控制方法
公开(公告)号：US08653946B2
公开(公告)日：2014-02-18
申请号：US11746306
申请日：2007-05-09
申请人： Ji-Hoon Bae , Hee-Sook Mo , Dong-Han Lee , Cheng-Hao Quan , Chan-Won Park , Gil-Young Choi , Cheol-Sig Pyo , Jong-Suk Chae
发明人： Ji-Hoon Bae , Hee-Sook Mo , Dong-Han Lee , Cheng-Hao Quan , Chan-Won Park , Gil-Young Choi , Cheol-Sig Pyo , Jong-Suk Chae
IPC分类号： H04Q5/22
CPC分类号： G06K7/0008 , G06K7/10356 , H04W74/08
摘要： Provided is a Radio Frequency Identification (RFID) reader that can minimize collision among RFID readers in an environment where there are a plurality of RFID readers within a limited operating environment by making each RFID reader select a channel at different delay time based on a random value, and a method for controlling operation of the RFID reader. The RFID reader includes a random value generating unit; a reader control unit for adaptively deciding a counter value for generating the random value; an anti-collision unit for preventing collision among a plurality of tags; a reader transmitting unit for generating a reader command message determined by the anti-collision unit, encoding the reader command message, and modulating the reader command message; a reader receiving unit for demodulating and decoding a tag signal; and a channel operation control unit for selecting a channel to be used for the communication with the tag.
摘要翻译：提供了一种射频识别（RFID）读取器，其可以在有限操作环境中存在多个RFID读取器的环境中最小化RFID读取器之间的冲突，使得每个RFID读取器基于随机值在不同的延迟时间选择信道以及用于控制RFID读取器的操作的方法。 RFID读取器包括随机值生成单元; 读取器控制单元，用于自适应地确定用于生成随机值的计数器值; 用于防止多个标签之间的碰撞的防碰撞单元; 读取器发送单元，用于生成由反冲突单元确定的读取器命令消息，对读取器命令消息进行编码，以及调制读取器命令消息; 读取器接收单元，用于解调和解码标签信号; 以及频道操作控制单元，用于选择要用于与标签进行通信的频道。

2. 发明申请

US20110148599A1 RFID READER, RFID TAG, AND METHOD OF RECOGNIZING PLURALITY OF RFID TAGS 审中-公开
标题翻译： RFID读取器，RFID标签和识别RFID标签的多重性的方法
公开(公告)号：US20110148599A1
公开(公告)日：2011-06-23
申请号：US12913347
申请日：2010-10-27
申请人： Chan Won Park , Man Sik Park , Ji Hoon Bae , Dong Han Lee , Kwang Soo Cho , Won Kyu Choi , Cheng Hao Quan , Jeong Seok Kim , Gil Young Choi , Jong Suk Chae
发明人： Chan Won Park , Man Sik Park , Ji Hoon Bae , Dong Han Lee , Kwang Soo Cho , Won Kyu Choi , Cheng Hao Quan , Jeong Seok Kim , Gil Young Choi , Jong Suk Chae
IPC分类号： H04Q5/22
CPC分类号： G06K7/10029 , G06K7/10039
摘要： The RFID reader of an RFID system includes a processor for processing a command for the RFID tag and a response from the RFID tag, a modem for modulating the command from the processor or demodulating the response from the RFID, and an RF unit for transmitting the modulated command transferred from the modem to the RFID tag or receiving the response from the RFID tag and transferring the response to the modem. The RFID tag of the RFID system includes a power supply unit for generating energy using a radio wave received from the RFID reader, a receiver for demodulating a signal received from the RFID reader, a data processor for performing operation according to the signal demodulated by the receiver, and a transmitter for backscattering a signal from the data processor.
摘要翻译： RFID系统的RFID读取器包括用于处理用于RFID标签的命令和来自RFID标签的响应的处理器，用于调制来自处理器的命令的调制解调器或解调来自RFID的响应的调制解调器，以及RF单元，用于发送调制命令从调制解调器传送到RFID标签或从RFID标签接收响应并将响应传送到调制解调器。 RFID系统的RFID标签包括用于使用从RFID读取器接收的无线电波产生能量的电源单元，用于解调从RFID读取器接收的信号的接收器，用于根据由所述RFID读取器解调的信号执行操作的数据处理器接收器和用于从数据处理器反向散射信号的发射器。

3. 发明申请

US20110074555A1 MOBILE RFID DEVICE AND DATA COMMUNICATION METHOD THEREOF 审中-公开
标题翻译：移动RFID设备及其数据通信方法
公开(公告)号：US20110074555A1
公开(公告)日：2011-03-31
申请号：US12859799
申请日：2010-08-20
申请人： Chan-Won Park , Man Sik Park , Ji-Hoon Bae , Donghan Lee , Kwang-Soo Cho , Won Kyu Choi , Cheng-Hao Quan , Jeong seok Kim , Gil Young Choi , Jong-Suk Chae
发明人： Chan-Won Park , Man Sik Park , Ji-Hoon Bae , Donghan Lee , Kwang-Soo Cho , Won Kyu Choi , Cheng-Hao Quan , Jeong seok Kim , Gil Young Choi , Jong-Suk Chae
IPC分类号： H04Q5/22
CPC分类号： G06K7/0008 , G06K7/10297
摘要： Provided are a mobile Radio Frequency Identification (RFID) device and a data communication method thereof. In the method, a mobile communication terminal unit provides a command to an mRFID reader unit and receives a response to the command from the mRFID reader unit. It is checked whether there is an error in a protocol message of the command or the response, and the command to the mRFID reader unit according to a check result is re-transmitted.
摘要翻译：提供了一种移动射频识别（RFID）设备及其数据通信方法。在该方法中，移动通信终端单元向mRFID读取器单元提供命令，并且从mRFID读取器单元接收对该命令的响应。检查命令或响应的协议消息中是否存在错误，并且重新发送根据检查结果对mRFID读取器单元的命令。

4. 发明申请

US20110064165A1 DEMODULATION APPARATUS AND METHOD FOR RFID READER IN PASSIVE RFID ENVIRONMENT 审中-公开
标题翻译： RFID读写器在无源RFID环境中的解调装置和方法
公开(公告)号：US20110064165A1
公开(公告)日：2011-03-17
申请号：US12625699
申请日：2009-11-25
申请人： Ji-Hoon BAE , Donghan LEE , Kwang-Soo CHO , Man Sik PARK , Chan-Won PARK , Cheng-Hao QUAN , Won Kyu CHOI , Gil Young CHOI , Jong-Suk CHAE
发明人： Ji-Hoon BAE , Donghan LEE , Kwang-Soo CHO , Man Sik PARK , Chan-Won PARK , Cheng-Hao QUAN , Won Kyu CHOI , Gil Young CHOI , Jong-Suk CHAE
IPC分类号： H04L27/22 , H04L25/06 , H04L27/00 , H04Q5/22
CPC分类号： H04L27/06 , H04L25/061 , H04L27/22
摘要： A demodulation apparatus for a Radio Frequency Identification (RFID) reader includes: a direct current (DC) offset cancellation unit for cancelling DC-offset noise contained in a PSK-modulated or ASK-modulated subcarrier tag signal from the tag signal when the tag signal is received; and a subcarrier digital demodulator for eliminating a subcarrier from the tag signal from which DC-offset noise has been cancelled to demodulate the DC-offset noise-cancelled tag signal.
摘要翻译：一种用于射频识别（RFID）读取器的解调装置包括：直流（DC）偏移消除单元，用于当标签信号（DC）偏移消除单元用于消除包含在来自标签信号的PSK调制或ASK调制的子载波标签信号中的DC偏移噪声被收到以及子载波数字解调器，用于从已经消除了DC偏移噪声的标签信号中消除副载波，以解调DC偏移噪声消除标签信号。

5. 发明申请

US20100039227A1 APPARATUS AND METHOD FOR DEMODULATING SUBCARRIER TAG SIGNAL IN RFID READER 有权
标题翻译： RFID读写器中用于解码子标签信号的装置和方法
公开(公告)号：US20100039227A1
公开(公告)日：2010-02-18
申请号：US12348529
申请日：2009-01-05
申请人： Ji-Hoon BAE , Donghan LEE , Won Kyu CHOI , Cheng-Hao QUAN , Gil Young CHOI , Jong-Suk CHAE
发明人： Ji-Hoon BAE , Donghan LEE , Won Kyu CHOI , Cheng-Hao QUAN , Gil Young CHOI , Jong-Suk CHAE
IPC分类号： H04Q5/22
CPC分类号： H04L27/06 , H04L27/22 , H04Q2213/13095
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。

6. 发明申请

US20090109929A1 MEDIA ACCESS METHOD PERFORMED BY READER IN DENSE READER ENVIRONMENT 审中-公开
标题翻译：读写器在读写器环境中执行的媒体访问方法
公开(公告)号：US20090109929A1
公开(公告)日：2009-04-30
申请号：US12190990
申请日：2008-08-13
申请人： Cheng Hao QUAN , Hee Sook MO , Donghan LEE , Ji Hoon BAE , Gil Young CHOI , Cheol Sig PYO , Jong Suk CHAE
发明人： Cheng Hao QUAN , Hee Sook MO , Donghan LEE , Ji Hoon BAE , Gil Young CHOI , Cheol Sig PYO , Jong Suk CHAE
IPC分类号： H04Q7/36
CPC分类号： G06K7/0008 , G06K7/10039 , G06K7/10356
摘要： Provided are a media access method and a reader for performing the media access method in a dense reader environment. The media access method divides an air time between the reader and a tag into a plurality of time slots, and operates in each of the plurality of time slots by using a listen before talking (LBT) technique. The plurality of time slots form a frame. Thus, the media access method can control the reader by performing channel scheduling between each of a plurality of readers and can efficiently recognize tags.
摘要翻译：提供了一种在密集读取器环境中执行媒体访问方法的媒体访问方法和阅读器。媒体接入方法将读取器和标签之间的空闲时间分成多个时隙，并且通过使用听话（LBT）技术在多个时隙中的每一个中进行操作。多个时隙形成一帧。因此，媒体接入方法可以通过在多个读取器中的每一个之间执行频道调度来控制读取器，并且可以有效地识别标签。

7. 发明授权

US08264332B2 Apparatus and method for demodulating subcarrier tag signal in RFID reader 有权
标题翻译： 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
申请人： Ji-Hoon Bae , Donghan Lee , Won Kyu Choi , Cheng-Hao Quan , Gil Young Choi , Jong-Suk Chae
发明人： Ji-Hoon Bae , Donghan Lee , Won Kyu Choi , Cheng-Hao Quan , Gil Young Choi , Jong-Suk Chae
IPC分类号： G08B21/00
CPC分类号： H04L27/06 , H04L27/22 , H04Q2213/13095
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。

8. 发明授权

US08115603B2 Method for identifying multiple moving tags with multiple readers 失效
标题翻译：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
申请人： Cheng Hao Quan , Hee-Sook Mo , Gil-Young Choi , Cheol-Sig Pyo , Jong-Suk Chae
发明人： Cheng Hao Quan , Hee-Sook Mo , Gil-Young Choi , Cheol-Sig Pyo , Jong-Suk Chae
IPC分类号： H04Q5/22 , G05B19/00 , H04W24/00 , H04B7/00 , H04B1/56 , H04B7/204 , H04L12/28
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。

9. 发明授权

US08717147B2 Passive RFID system and method 失效
标题翻译：被动RFID系统和方法
公开(公告)号：US08717147B2
公开(公告)日：2014-05-06
申请号：US12886689
申请日：2010-09-21
申请人： Ji Hoon Bae , Cheng Hao Quan , Dong Han Lee , Chan Won Park , Won Kyu Choi , Kwang Soo Cho , Man Sik Park , Gil Young Choi , Jong Suk Chae
发明人： Ji Hoon Bae , Cheng Hao Quan , Dong Han Lee , Chan Won Park , Won Kyu Choi , Kwang Soo Cho , Man Sik Park , Gil Young Choi , Jong Suk Chae
IPC分类号： H04Q5/22
CPC分类号： G06K7/0008 , G06K7/10069
摘要： Disclosed are a passive RFID (Radio Frequency Identification) system and method capable of recognizing a great deal of tags at a high speed. A reader of a passive RFID system, including: a processor dividing slots and subchannels to configure a round, recognizing subchannels that are not involved in a collision and interference by the slots, and changing the subchannels that are not involved in a collision and interference, into a sleep state; a transmission unit encoding a command generated through the processor, performing an amplitude jitter modulation on the encoded command, and transmitting the modulated command; and a reception unit acquiring and demodulating tag signals received through a plurality of subchannels by the slots, and providing the demodulated tag signals to the processor.
摘要翻译：公开了能够高速识别大量标签的无源RFID（射频识别）系统和方法。一种无源RFID系统的阅读器，包括：处理器分割时隙和子信道以配置轮回，识别未被时隙的冲突和干扰的子信道，以及改变不涉及冲突和干扰的子信道，进入睡眠状态; 编码通过所述处理器生成的命令的传输单元，对所述编码命令执行振幅抖动调制，以及发送所述调制命令; 以及接收单元，通过所述时隙获取并解调通过多个子信道接收的标签信号，并将解调的标签信号提供给处理器。

10. 发明授权

US08666323B2 RFID reader and method for suppressing transmission leakage signal thereof 失效
标题翻译： RFID读写器及其传输泄漏信号的抑制方法
公开(公告)号：US08666323B2
公开(公告)日：2014-03-04
申请号：US12786777
申请日：2010-05-25
申请人： Donghan Lee , Sang Gee Kang , Kwang-Soo Cho , Man Sik Park , Chan-Won Park , Cheng-Hao Quan , Ji-Hoon Bae , Gil Young Choi , Jong-Suk Chae
发明人： Donghan Lee , Sang Gee Kang , Kwang-Soo Cho , Man Sik Park , Chan-Won Park , Cheng-Hao Quan , Ji-Hoon Bae , Gil Young Choi , Jong-Suk Chae
IPC分类号： H04B17/00
CPC分类号： H04B1/525 , G06K7/0008 , G06K7/10346
摘要： Provided are an RFID reader and a method for suppressing transmission leakage signals thereof. The RFID reader includes a first loop, a second loop, and a digital signal processor. The first loop suppresses a first transmission leakage signal of an RX signal in response to a first leakage control signal. The second loop suppresses a second transmission leakage signal of the RX signal, received through the first loop, in response to a second leakage control signal. The digital signal processor generates the first leakage control signal and the second leakage control signal. The digital signal processor generates the first leakage control signal until the level of the first transmission leakage signal becomes equal to or lower than the level of a first reference transmission leakage signal.
摘要翻译：提供RFID读取器和用于抑制其传输泄漏信号的方法。 RFID读取器包括第一环路，第二环路和数字信号处理器。第一回路响应于第一泄漏控制信号来抑制RX信号的第一传输泄漏信号。响应于第二泄漏控制信号，第二回路抑制通过第一回路接收的RX信号的第二传输泄漏信号。数字信号处理器产生第一泄漏控制信号和第二泄漏控制信号。数字信号处理器产生第一泄漏控制信号，直到第一传输泄漏信号的电平变得等于或低于第一参考传输泄漏信号的电平。

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