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20 条记录 (耗时 0.028 秒)

    RFID reader and RF transmission method thereof
    1.
    发明授权
    RFID reader and RF transmission method thereof 有权
    RFID阅读器及其RF传输方法

    公开(公告)号：US08265570B2

    公开(公告)日：2012-09-11

    申请号：US12204985

    申请日：2008-09-05

    申请人： Jin-Hun Koo ,  Young-Hoon Min ,  Si-Gyoung Koo ,  Il-Jong Song ,  Kuang-Woo Nam

    发明人： Jin-Hun Koo ,  Young-Hoon Min ,  Si-Gyoung Koo ,  Il-Jong Song ,  Kuang-Woo Nam

    IPC分类号： H04B1/44

    CPC分类号： G06K7/0008 ,  G06K7/10198 ,  G06K7/10356

    摘要： A Radio Frequency (RF) transmission method of a Radio Frequency Identification (RFID) reader using a plurality of channels is provided. The method includes: selecting at least part of the plurality of channels, measuring an RF power of each of the selected channels, determining a transmission environment of the RF according to a measurement determination, and modulating an RF signal according to the determined transmission environment.

    摘要翻译： 提供了使用多个通道的射频识别（RFID）读取器的射频（RF）传输方法。 该方法包括：选择多个信道的至少一部分，测量每个所选信道的RF功率，根据测量确定确定RF的传输环境，以及根据确定的传输环境调制RF信号。

    RFID READER AND RF TRANSMISSION METHOD THEREOF
    2.
    发明申请
    RFID READER AND RF TRANSMISSION METHOD THEREOF 有权
    RFID读写器和射频发射方法

    公开(公告)号：US20090066480A1

    公开(公告)日：2009-03-12

    申请号：US12204985

    申请日：2008-09-05

    申请人： Jin-Hun Koo ,  Young-Hoon Min ,  Si-Gyoung Koo ,  Il-Jong Song ,  Kuang-Woo Nam

    发明人： Jin-Hun Koo ,  Young-Hoon Min ,  Si-Gyoung Koo ,  Il-Jong Song ,  Kuang-Woo Nam

    IPC分类号： H04Q5/22

    CPC分类号： G06K7/0008 ,  G06K7/10198 ,  G06K7/10356

    摘要： A Radio Frequency (RF) transmission method of a Radio Frequency Identification (RFID) reader using a plurality of channels is provided. The method includes: selecting at least part of the plurality of channels, measuring an RF power of each of the selected channels, determining a transmission environment of the RF according to a measurement determination, and modulating an RF signal according to the determined transmission environment.

    摘要翻译： 提供了使用多个通道的射频识别（RFID）读取器的射频（RF）传输方法。 该方法包括：选择多个信道的至少一部分，测量每个所选信道的RF功率，根据测量确定确定RF的传输环境，以及根据确定的传输环境调制RF信号。

    RFID READER COMPENSATING LEAKAGE SIGNAL AND COMPENSATING METHOD THEREOF
    5.
    发明申请
    RFID READER COMPENSATING LEAKAGE SIGNAL AND COMPENSATING METHOD THEREOF 审中-公开
    RFID读写器补偿泄漏信号及其补偿方法

    公开(公告)号：US20090068957A1

    公开(公告)日：2009-03-12

    申请号：US12205401

    申请日：2008-09-05

    申请人： JI-HUN KOO ,  Il-Jong Song ,  Si-Gyoung Koo ,  Young-Hoon Min ,  Kuang-Woo Nam ,  Yuri Tikhov ,  In-Hyuk Kim

    发明人： JI-HUN KOO ,  Il-Jong Song ,  Si-Gyoung Koo ,  Young-Hoon Min ,  Kuang-Woo Nam ,  Yuri Tikhov ,  In-Hyuk Kim

    IPC分类号： H04B17/00

    CPC分类号： G06K7/0008 ,  H04B5/0031 ,  H04B5/0062 ,  H04B5/02

    摘要： A radio frequency identification (RFID) reader includes a transmitter generating a transmission signal for transmission to a tag, a receiver receiving a response signal from the tag, a leakage compensator compensating a leakage signal leaked from the transmitter to the receiver in response to a leakage control signal, and a control unit performing a leakage test operation by applying a test signal to the transmitter, and calculating and storing a leakage parameter for generating the leakage control signal using a level difference of the test signal and a level difference of a test leakage signal leaked to the receiver.

    摘要翻译： 射频识别（RFID）读取器包括：发射器，产生用于传输到标签的传输信号，接收器接收来自标签的响应信号;泄漏补偿器，用于响应于泄漏而补偿从发射器泄漏到接收器的泄漏信号 控制信号，以及通过向发送机施加测试信号来进行泄漏测试操作的控制单元，并且使用测试信号的电平差和测试泄漏的电平差来计算和存储用于产生泄漏控制信号的泄漏参数 信号泄漏到接收器。

    RFID reader cancelling leakage signal
    6.
    发明授权
    RFID reader cancelling leakage signal 有权
    RFID读写器取消泄漏信号

    公开(公告)号：US08410905B2

    公开(公告)日：2013-04-02

    申请号：US12170723

    申请日：2008-07-10

    申请人： Il-Jong Song ,  Si-Gyoung Koo ,  Jin-Hun Koo ,  Young-Hoon Min

    发明人： Il-Jong Song ,  Si-Gyoung Koo ,  Jin-Hun Koo ,  Young-Hoon Min

    IPC分类号： H04Q5/22

    CPC分类号： H04Q9/00 ,  H04Q2209/47 ,  H04Q2209/84

    摘要： A radio frequency identification (RFID) recorder for cancelling a leakage signal includes a digital unit calculating and storing an amplitude and a phase of the leakage signal, and a leakage cancellation circuit generating a leakage cancellation signal to cancel the leakage signal in response to a control of the digital unit.

    摘要翻译： 用于消除泄漏信号的射频识别（RFID）记录器包括计算和存储泄漏信号的振幅和相位的数字单元，以及产生泄漏消除信号的泄漏消除电路，以响应于控制来抵消泄漏信号 的数字单元。

    Ultra-low-power level shifter, voltage transform circuit and RFID tag including the same
    7.
    发明授权
    Ultra-low-power level shifter, voltage transform circuit and RFID tag including the same 有权
    超低功率电平转换器，电压变换电路和包括其的RFID标签

    公开(公告)号：US07834661B2

    公开(公告)日：2010-11-16

    申请号：US12210634

    申请日：2008-09-15

    申请人： Ja-Nam Ku ,  Cheong-Worl Kim ,  Young-Hoon Min ,  Dong-Hyun Lee ,  Il-Jong Song

    发明人： Ja-Nam Ku ,  Cheong-Worl Kim ,  Young-Hoon Min ,  Dong-Hyun Lee ,  Il-Jong Song

    IPC分类号： H03K19/0175

    CPC分类号： H03K19/018571

    摘要： A level shifter increase a voltage level of an output signal with relatively lower power consumption by adopting current-starved configuration. The level shifter includes an input unit and a driving unit. The input unit includes a current-starved inverter configured to generate a control signal in response to an input signal and a bias voltage. The input unit is powered by a first power supply voltage. The driving unit generates an output signal in response to the control signal. The output signal has a voltage level higher than the input signal, and the driving unit is powered by a second power supply voltage higher than the first power supply voltage.

    摘要翻译： 电平移位器通过采用电流欠压配置，以相对较低的功耗增加输出信号的电压电平。 电平移位器包括输入单元和驱动单元。 输入单元包括被配置为响应于输入信号和偏置电压产生控制信号的电流饥饿逆变器。 输入单元由第一电源电压供电。 驱动单元根据控制信号生成输出信号。 输出信号具有高于输入信号的电压电平，并且驱动单元由比第一电源电压高的第二电源电压供电。

    Transceivers for near field communication, near field communication devices, and electronic systems having the same
    9.
    发明授权
    Transceivers for near field communication, near field communication devices, and electronic systems having the same 有权

    公开(公告)号：US09641227B2

    公开(公告)日：2017-05-02

    申请号：US14638910

    申请日：2015-03-04

    申请人： Byeong-Taek Moon ,  Il-Jong Song

    发明人： Byeong-Taek Moon ,  Il-Jong Song

    IPC分类号： H04B5/02 ,  H04B5/00

    CPC分类号： H04B5/02 ,  H04B5/0031 ,  H04B5/0056

    摘要： A transceiver for near field communication may include: a resonance circuit coupled between a first node and a second node, the resonance circuit having a resonance frequency and being configured to emit an electromagnetic wave to communicate data with an external device; a first capacitor coupled between the first node and a third node; a second capacitor coupled between the second node and a fourth node; and/or a filter coupled among a first transmission electrode, a second transmission electrode, the third node, and the fourth node in an asymmetrical structure to provide a first frequency response and a second frequency response to the first transmission electrode and the second transmission electrode, respectively, the first frequency response being different from the second frequency response, the filter being configured to receive the data through the first transmission electrode and the second transmission electrode.