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    • 33. 发明授权
    • Passive RFID reader and operation control method therefor
    • 被动RFID阅读器及其操作控制方法
    • US08653946B2
    • 2014-02-18
    • US11746306
    • 2007-05-09
    • Ji-Hoon BaeHee-Sook MoDong-Han LeeCheng-Hao QuanChan-Won ParkGil-Young ChoiCheol-Sig PyoJong-Suk Chae
    • Ji-Hoon BaeHee-Sook MoDong-Han LeeCheng-Hao QuanChan-Won ParkGil-Young ChoiCheol-Sig PyoJong-Suk Chae
    • H04Q5/22
    • G06K7/0008G06K7/10356H04W74/08
    • 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.
    • 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。
    • 35. 发明授权
    • Mobile RFID reader and control method thereof
    • 移动RFID阅读器及其控制方法
    • US07982584B2
    • 2011-07-19
    • US11526517
    • 2006-09-25
    • Ji-Hoon BaeHee-Sook MoDong-Han LeeChan-Won ParkGil-Young ChoiCheol-Sig PyoJong-Suk Chae
    • Ji-Hoon BaeHee-Sook MoDong-Han LeeChan-Won ParkGil-Young ChoiCheol-Sig PyoJong-Suk Chae
    • H04Q5/22
    • H04B5/0062H04B17/318H04L1/0001H04L1/0025H04L1/0057H04L1/1607
    • Provided are a mobile RFID reader and a control method thereof. The mobile RFID reader includes: a reader controller for beginning a reader operation to communicate with a tag in response to a command of a terminal controller of the wireless communication terminal; an anti-collision state machine for controlling collision among a plurality of tags, and transferring the result of communication with the tag to the reader controller; a reader transmitter for generating a reader command message decided at the anti-collision state machine, and coding and modulating the generated reader command message; a reader receiver for demodulating and decoding a tag signal received through an antenna, and reporting a tag response state to the anti-collision state machine; and a channel controller for selecting a channel to use to communicate with a tag in response to a command of the reader controller.
    • 提供了一种移动RFID读取器及其控制方法。 移动RFID读取器包括:读取器控制器,用于响应于无线通信终端的终端控制器的命令开始读取器操作以与标签通信; 用于控制多个标签之间的冲突并将与标签的通信结果传送给读取器控制器的防冲突状态机; 读取器发送器,用于生成在反冲突状态机处决定的读取器命令消息,以及对生成的读取器命令消息进行编码和调制; 读取器接收器,用于对通过天线接收的标签信号进行解调和解码,并将标签响应状态报告给防冲突状态机; 以及频道控制器,用于响应于读取器控制器的命令,选择用于与标签通信的频道。
    • 36. 发明授权
    • Apparatus and method for receiving tag signal in mobile RFID reader
    • 用于在移动RFID读写器中接收标签信号的装置和方法
    • US07821378B2
    • 2010-10-26
    • US11527998
    • 2006-09-27
    • Ji-Hoon BaeChan-Won ParkHee-Sook MoDong-Han LeeChenghao QuanGil-Young ChoiCheol-Sig PyoJong-Suk Chae
    • Ji-Hoon BaeChan-Won ParkHee-Sook MoDong-Han LeeChenghao QuanGil-Young ChoiCheol-Sig PyoJong-Suk Chae
    • H04Q5/22
    • H04B5/02H04B5/0062
    • 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.
    • 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。
    • 38. 发明申请
    • Apparatus and method for receiving tag signal in mobile RFID reader
    • 用于在移动RFID读写器中接收标签信号的装置和方法
    • US20070069864A1
    • 2007-03-29
    • US11527998
    • 2006-09-27
    • Ji-Hoon BaeChan-Won ParkHee-Sook MoDong-Han LeeChenghao QuanGil-Young ChoiCheol-Sig PyoJong-Suk Chae
    • Ji-Hoon BaeChan-Won ParkHee-Sook MoDong-Han LeeChenghao QuanGil-Young ChoiCheol-Sig PyoJong-Suk Chae
    • H04Q5/22
    • H04B5/02H04B5/0062
    • 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.
    • 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。