公开(公告)号：US20120057656A1

公开(公告)日：2012-03-08

申请号：US13225949

申请日：2011-09-06

Applicant: Ji Hoon BAE ,  Dong Han LEE

Inventor： Ji Hoon BAE ,  Dong Han LEE

IPC: H04L25/06

CPC classification number: H04L25/4904 ,  G06K7/10009 ,  H04L25/06

Abstract: An apparatus and method for passive radio frequency identification (RFID) reader digital demodulation with respect to a Manchester subcarrier signal are disclosed. In a passive RFID environment where the Manchester subcarrier signal contains DC components in a frequency region, even when a tag signal containing the DC offset noise is input to a baseband, demodulation may be efficiently performed while the DC offset noise is removed. Therefore, accurate detection of tag information from the tag signal may be achieved.

Abstract translation: 公开了一种关于曼彻斯特副载波信号的无源射频识别（RFID）读取器数字解调的装置和方法。 在曼彻斯特副载波信号包含频率区域中的DC分量的无源RFID环境中，即使当包含DC偏移噪声的标签信号被输入到基带时，也可以在去除DC偏移噪声的同时有效地执行解调。 因此，可以实现来自标签信号的标签信息的准确检测。

公开(公告)号：US20120112884A1

公开(公告)日：2012-05-10

申请号：US13186824

申请日：2011-07-20

Applicant: Ji Hoon BAE ,  Kwang Soo Cho ,  Dong Han Lee ,  Man Sik Park ,  Chan Won Park

Inventor： Ji Hoon BAE ,  Kwang Soo Cho ,  Dong Han Lee ,  Man Sik Park ,  Chan Won Park

IPC: G06K7/01

CPC classification number: G06K7/10039

Abstract: The present invention relates to an apparatus and method for detecting the collision of Radio Frequency IDentification (RFID) tags. In the apparatus and method for detecting the collision of RFID tags, when a subcarrier signal from which a carrier signal has been removed by a reader ASK analog demodulation device is inputted to a baseband receiver, a peak signal for the received tag signal is generated, and useful information about the generated peak signal within a symbol section is extracted. In the case where a collision is generated because two or more tags send signals to an RFID reader at the same time when the RFID reader communicates with the tags, the RFID reader can effectively detect the collision between the tags.

Abstract translation: 本发明涉及用于检测射频识别（RFID）标签的冲突的装置和方法。 在用于检测RFID标签的冲突的装置和方法中，当将由读写器ASK模拟解调装置移除了载波信号的副载波信号输入到基带接收机时，产生接收到的标签信号的峰值信号， 并且提取关于符号部分内生成的峰值信号的有用信息。 在RFID读取器与标签通信的同时，由于两个或更多个标签向RFID读取器发送信号的情况下，RFID读取器可以有效地检测标签之间的冲突。

公开(公告)号：US20090109929A1

公开(公告)日：2009-04-30

申请号：US12190990

申请日：2008-08-13

Applicant: Cheng Hao QUAN ,  Hee Sook MO ,  Donghan LEE ,  Ji Hoon BAE ,  Gil Young CHOI ,  Cheol Sig PYO ,  Jong Suk CHAE

Inventor： Cheng Hao QUAN ,  Hee Sook MO ,  Donghan LEE ,  Ji Hoon BAE ,  Gil Young CHOI ,  Cheol Sig PYO ,  Jong Suk CHAE

IPC: H04Q7/36

CPC classification number: G06K7/0008 ,  G06K7/10039 ,  G06K7/10356

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110090130A1

公开(公告)日：2011-04-21

申请号：US12895142

申请日：2010-09-30

Applicant: Won Kyu CHOI ,  Jeong Seok KIM ,  Ji Hoon BAE ,  Gil Young CHOI ,  Jong Suk CHAE

Inventor： Won Kyu CHOI ,  Jeong Seok KIM ,  Ji Hoon BAE ,  Gil Young CHOI ,  Jong Suk CHAE

IPC: H01Q13/10

CPC classification number: H01Q1/2216 ,  G06K7/0008 ,  G06K7/10316 ,  H01Q13/10 ,  H01Q13/22 ,  H01Q21/08 ,  H01Q21/24

Abstract: An RFID reader antenna including: a printed circuit board (PCB) formed as a dielectric substance; a plurality of slot groups, each having a plurality of slots, disposed on a first face of the PCB; a ground face disposed on areas, excluding the plurality of slot groups, of the first face of the PCB; and a feeder formed as a microstrip line with an open end on a second face of the PCB to feed the plurality of slot groups. Because the slots periodically formed on the ground face are fed in series by using the single microstrip line, the RFID reader antenna can reliably recognize a larger area with a simple structure. In particular, the RFID reader antenna can be useful for the bookstands for book management or smart shelves for displaying articles or goods including clothing goods in superstores or hypermarkets through the use of the ILT RFID application.

Abstract translation: 一种RFID读取器天线，包括：形成为电介质的印刷电路板（PCB）; 多个槽组，每个具有多个槽，设置在所述PCB的第一面上; 布置在所述PCB的第一面的除了所述多个槽组之外的区域上的接地面; 以及馈送器，其形成为在PCB的第二面上具有开口端的微带线，以馈送多个槽组。 由于通过使用单条微带线，周期性地形成在地面上的槽被串联馈送，因此RFID读取器天线可以以简单的结构可靠地识别较大的区域。 特别地，RFID阅读器天线可用于书本管理的书店或通过使用ILT RFID应用程序来显示物品或商品，包括超级市场或大型超市中的服装商品的智能货架。