公开(公告)号：US20100039227A1

公开(公告)日：2010-02-18

申请号：US12348529

申请日：2009-01-05

Applicant: Ji-Hoon BAE ,  Donghan LEE ,  Won Kyu CHOI ,  Cheng-Hao QUAN ,  Gil Young CHOI ,  Jong-Suk CHAE

Inventor： Ji-Hoon BAE ,  Donghan LEE ,  Won Kyu CHOI ,  Cheng-Hao QUAN ,  Gil Young CHOI ,  Jong-Suk CHAE

IPC: H04Q5/22

CPC classification number: H04L27/06 ,  H04L27/22 ,  H04Q2213/13095

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20100026582A1

公开(公告)日：2010-02-04

申请号：US12272373

申请日：2008-11-17

Applicant: Won Kyu CHOI ,  Jeongseok KIM ,  Ji-Hoon BAE ,  Gil Young CHOI ,  Jong-Suk CHAE

Inventor： Won Kyu CHOI ,  Jeongseok KIM ,  Ji-Hoon BAE ,  Gil Young CHOI ,  Jong-Suk CHAE

IPC: H01Q1/38

CPC classification number: H01Q1/2216 ,  H01Q13/22 ,  H01Q21/0081 ,  H01Q21/068

Abstract: A near-field radio frequency identification (RFID) reader antenna includes: a plurality of pairs of slots being formed on a ground surface of a single dielectric layer to emit a field; and a micro-strip line being formed on another surface of the single dielectric layer and having an open end to feed the plurality of pairs of slots.

Abstract translation: 近场射频识别（RFID）读取器天线包括：多个槽对，形成在单个电介质层的地表面上以发射场; 并且微带线形成在单个电介质层的另一个表面上并且具有开放端以馈送多对槽。

公开(公告)号：US20090219116A1

公开(公告)日：2009-09-03

申请号：US11587068

申请日：2004-12-30

Applicant: Nak-Seon Seong ,  Won-Kyu Choi ,  Ji-Hoon Bae ,  Jong-Moon Lee ,  Cheol-Sig Pyo ,  Chang-Joo Kim

Inventor： Nak-Seon Seong ,  Won-Kyu Choi ,  Ji-Hoon Bae ,  Jong-Moon Lee ,  Cheol-Sig Pyo ,  Chang-Joo Kim

IPC: H01P1/04 ,  H01P5/08

CPC classification number: H01P5/103

Abstract: A cable to waveguide transition apparatus having a signal accumulation form of a backshort is disclosed. The cable to waveguide transition apparatus having a signal accumulation form of a backshort, includes: a waveguide; a RF probe for transferring a radio frequency (RF) signal to the waveguide; and a backshort having the signal accumulation form for reflecting the RF signal excited from the RF probe, wherein the backshort reflects a first fundamental frequency signal excited from the RF probe to have a phase identical to a phase of a second fundamental frequency signal excited from the RF probe to an aperture of the waveguide, and reflects a first 2-order harmonic frequency signal excited from the RF probe to have a phase reverse to a phase of a second 2-order harmonic frequency signal excited to an aperture of the waveguide in order to eliminate the 2-order harmonic frequency signal.

Abstract translation: 公开了一种具有回溯信号累积形式的电缆到波导转换装置。 具有回溯信号聚集形式的电缆到波导转换装置包括：波导; 用于将射频（RF）信号传送到波导的RF探针; 以及具有用于反射从RF探针激发的RF信号的信号累积形式的反向信息，其中所述反向信号反射从所述RF探针激发的第一基频信号具有与从所述RF探针激励的第二基频信号的相位相同的相位 RF探针到波导的孔径，并且反射从RF探针激发的第一二阶谐波频率信号，使得与向波导的孔径激励的第二二阶谐波频率信号的相位相反相位 以消除二阶谐波频率信号。

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：US20090086869A1

公开(公告)日：2009-04-02

申请号：US12163339

申请日：2008-06-27

Applicant: Ji-Hoon Bae ,  Hee Sook Mo ,  Donghan Lee ,  ChengHao Quan ,  Gil Young Choi ,  Cheol Sig Pyo

Inventor： Ji-Hoon Bae ,  Hee Sook Mo ,  Donghan Lee ,  ChengHao Quan ,  Gil Young Choi ,  Cheol Sig Pyo

IPC: H04L7/02

CPC classification number: G06K7/0008 ,  G06K7/10297

Abstract: Disclosed are a method and system for receiving a tag signal in a Radio Frequency Identification (RFID) reader. The method includes generating an edge signal using a tag signal received from an RFID tag; extracting edge information from the generated edge signal, and generating an edge clock corresponding to the extracted edge information; and determining bit data with respect to the tag signal using the generated edge clock.

Abstract translation: 公开了一种用于在射频识别（RFID）读取器中接收标签信号的方法和系统。 该方法包括使用从RFID标签接收的标签信号产生边缘信号; 从生成的边缘信号中提取边缘信息，以及生成与所提取的边缘信息相对应的边缘时钟; 以及使用所生成的边缘时钟来确定关于所述标签信号的比特数据。

公开(公告)号：US07504998B2

公开(公告)日：2009-03-17

申请号：US11297687

申请日：2005-12-07

Applicant: Won-Kyu Choi ,  Hae-Won Son ,  Je-Hoon Yun ,  Ji-Hoon Bae ,  Cheol-Sig Pyo ,  Jong-Suk Chae

Inventor： Won-Kyu Choi ,  Hae-Won Son ,  Je-Hoon Yun ,  Ji-Hoon Bae ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC: H01Q1/38

CPC classification number: H01Q1/2225 ,  H01Q1/22 ,  H01Q9/0421 ,  H01Q9/045

Abstract: Provided is a planar inverted-F antenna (PIFA) which has a Co-Planar Waveguide (CPW) feeding structure and can be attached to a metal surface, and an RFID tag using the same. The PIFA includes a radiation patch layer; a Co-Planar Waveguide (CPW) feeding layer; a feeding probe; and a short-circuit. The CPW feeding layer includes a feeding means and a ground surface. The feeding probe electrically connects the radiation patch layer and the feeding means and provides a Radio Frequency (RF) signal to be radiated to the radiation patch layer. The short-circuiting means short-circuits the radiation patch layer and the ground surface through the dielectric layer. The PIFA can be applied to a passive RFID tag. Impedance matching between the antenna and the RFID chip is possible. Also, the PIFA can easily control resonant frequency of the antenna and reactance.

Abstract translation: 提供了具有共平面波导（CPW）馈送结构并且可以附着到金属表面的平面倒F天线（PIFA）和使用其的RFID标签。 PIFA包括辐射贴片层; 共平面波导（CPW）馈电层; 喂食探针; 和短路。 CPW馈送层包括馈送装置和接地表面。 馈送探针将辐射贴片层和馈送装置电连接并提供要辐射到辐射贴片层的射频（RF）信号。 短路装置通过介电层使辐射贴片层和地表面短路。 PIFA可应用于无源RFID标签。 天线和RFID芯片之间的阻抗匹配是可能的。 此外，PIFA可以轻松控制天线的谐振频率和电抗。

公开(公告)号：US20080136643A1

公开(公告)日：2008-06-12

申请号：US11931062

申请日：2007-10-31

Applicant: Junho YEO ,  Josef PRIESHUB-PFLURGL ,  Alex JANEK ,  Andreas SCHUHA ,  Hae- Won SON ,  Jae- Young JUNG ,  Hee- Sook MO ,  Ji- Hoon BAE ,  Gil- Young CHOI ,  Cheol- Sig PYO ,  Jong- Suk CHAE

Inventor： Junho YEO ,  Josef PRIESHUB-PFLURGL ,  Alex JANEK ,  Andreas SCHUHA ,  Hae- Won SON ,  Jae- Young JUNG ,  Hee- Sook MO ,  Ji- Hoon BAE ,  Gil- Young CHOI ,  Cheol- Sig PYO ,  Jong- Suk CHAE

IPC: G08B13/14

CPC classification number: G06K19/0723 ,  G06K19/0707 ,  G06K19/0712

Abstract: According to the present invention, the apparatus receives a radio frequency (RF) signal transmitted from the Radio Frequency Identification (RFID) reader, measures the strength of the received RF signal, and controls the power supplied from the power supply unit included in the tag or the power excited by the RF signal to be supplied to the tag according to whether the power excited by the received RF signal exceeds a level necessary to operate the tag based on the measured strength of the RF signal. Thus, efficiency of power consumption of the tag and the RFID transmission/reception system can be maximized and the amount of data is reduced to the extent that the set of commands is not needed, thereby simplifying a data process.

Abstract translation: 根据本发明，该装置接收从射频识别（RFID）读取器发送的射频（RF）信号，测量接收的RF信号的强度，并控制从标签中包括的电源单元提供的电力 或根据所接收的RF信号激发的功率是否超过基于所测量的RF信号的强度来操作标签所需的电平，由RF信号激励的功率被提供给标签。 因此，标签和RFID发送/接收系统的功耗的效率可以最大化，并且数据量减少到不需要该组命令的程度，从而简化了数据处理。

公开(公告)号：US20070069864A1

公开(公告)日：2007-03-29

申请号：US11527998

申请日：2006-09-27

Applicant: Ji-Hoon Bae ,  Chan-Won Park ,  Hee-Sook Mo ,  Dong-Han Lee ,  Chenghao Quan ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae

Inventor： Ji-Hoon Bae ,  Chan-Won Park ,  Hee-Sook Mo ,  Dong-Han Lee ,  Chenghao Quan ,  Gil-Young Choi ,  Cheol-Sig Pyo ,  Jong-Suk Chae

IPC: H04Q5/22

CPC classification number: H04B5/02 ,  H04B5/0062

Abstract: Provided are a tag signal receiving apparatus that can perform digital Amplitude Shift Keying (ASK) demodulation onto signals received in a tag, decode the demodulated tag signal in synchronization, and acquire tag data in a mobile RFID reader, and a method thereof. The tag signal receiving apparatus includes: a digital demodulating block for performing ASK demodulation onto a digital tag signal received through a reader antenna and converted into a digital tag signal in an analog-to-digital (AD) converter; and a decoding block for detecting edge position information of the demodulated tag signal by performing accumulation and decoding the demodulated tag signal by using the detected edge position information. The digital demodulating block includes a channel level comparator, a phase inverter, a signal converter; and an adder. The decoding block includes an edge information detector, a correlator, and a bit data decider.

Abstract translation: 提供一种标签信号接收装置，其可以对在标签中接收的信号执行数字幅移键控（ASK）解调，同步解码解调的标签信号，并在移动RFID读取器中获取标签数据及其方法。 标签信号接收装置包括：数字解调块，用于对通过读取器天线接收的数字标签信号进行ASK解调，并在模数（AD）转换器中转换为数字标签信号; 以及解码块，用于通过使用检测到的边缘位置信息来对解调的标签信号进行累加和解码来检测解调标签信号的边缘位置信息。 数字解调块包括信道电平比较器，相位逆变器，信号转换器; 和加法器。 解码块包括边缘信息检测器，相关器和位数据判定器。