Contactless IC card system
    41.
    发明授权
    Contactless IC card system 有权
    非接触式IC卡系统

    公开(公告)号:US06784730B2

    公开(公告)日:2004-08-31

    申请号:US10442736

    申请日:2003-05-21

    申请人: Shigeru Arisawa

    发明人: Shigeru Arisawa

    IPC分类号: H03D100

    摘要: In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: first signal output means for outputting a first output signal having a predetermined phase with respect to that of an input signal, a second signal output means for outputting a second output signal having a predetermined phase with respect to that of the input signal, gate means for gating at least the second output signal, calculation means for adding, or subtracting the first output signal and the second output signal; and control means for controlling the operation of the gate means in response to a logic level of input data.

    摘要翻译: 在非接触IC卡系统中,以IC形式制造的调制电路以高功率效率工作。 解调装置被配置为包括:第一信号输出装置,用于输出相对于输入信号具有预定相位的第一输出信号;第二信号输出装置,用于输出具有预定相位的第二输出信号,该第二输出信号具有相对于 至少选择第二输出信号的门装置,用于相加或减去第一输出信号和第二输出信号的计算装置; 以及用于响应于输入数据的逻辑电平来控制门装置的操作的控制装置。

    Non-contact IC card and system for performing data communication
    42.
    发明授权
    Non-contact IC card and system for performing data communication 有权
    非接触式IC卡和执行数据通信的系统

    公开(公告)号:US06567394B1

    公开(公告)日:2003-05-20

    申请号:US09244010

    申请日:1999-02-04

    申请人: Shigeru Arisawa

    发明人: Shigeru Arisawa

    IPC分类号: H04J100

    CPC分类号: G06K7/0008 G06K19/0723

    摘要: An IC card, an IC card processor, and an IC card system are simply arranged to perform full-duplex data exchange efficiently using a frequency band in such a manner that a transmission signal sent from the IC card processor is received by an antenna, the transmission signal is demodulated, and a response signal to be sent from the antenna is formed by modulating a main carrier having the same frequency as a main carrier of the transmission signal with a response data sequence in such a manner that a sideband of the response signal does not overlap a sideband of the transmission signal along the frequency axis.

    摘要翻译: IC卡,IC卡处理器和IC卡系统被简单地布置成使用频带有效地执行全双工数据交换,使得从IC卡处理器发送的发送信号被天线接收, 发送信号被解调,并且从天线发送的响应信号通过以响应数据序列调制具有作为发送信号的主载波的频率相同频率的主载波来形成,使得响应信号的边带 不会沿着频率轴与发送信号的边带重叠。

    Data processing apparatus and method and data transmitting/receiving
apparatus and method
    43.
    发明授权
    Data processing apparatus and method and data transmitting/receiving apparatus and method 失效
    数据处理装置及方法及数据发送/接收装置及方法

    公开(公告)号:US6126077A

    公开(公告)日:2000-10-03

    申请号:US872619

    申请日:1997-06-10

    CPC分类号: G06K7/0008

    摘要: Method and apparatus for providing communication with a higher communication rate while maintaining the occupied frequency band narrow, a signal processing unit of a reader/writer unit Biphase Shift Keying (BPSK)-modulates data to be transmitted, and thereafter outputs the modulated signal to a modem. The modem Amplitude Shift Keying (ASK)-modulates the modulated signal and outputs the ASK-modulated signal to a first loop coil. The first loop coil generates a magnetic field corresponding to the modulated wave. An IC card converts a part of the magnetic field radiated from the reader/writer unit with another loop coil to generate a power source from the electrical signal, and also extracts the data transmitted. In the case of transmitting the data to the reader/writer unit, a load of another loop coil is changed in accordance with the data. The reader/writer unit detects, with the first loop coil, any change in load of another loop coil of the IC card magnetically coupled with the first loop coil.

    摘要翻译: 在保持占用频带的同时保持较高通信速率的通信的方法和装置,读/写器单元双相移位键控(BPSK)的信号处理单元调制要发送的数据,然后将调制信号输出到 调制解调器。 调制解调器幅移键控(ASK) - 调制调制信号,并将ASK调制信号输出到第一个环路线圈。 第一环线圈产生对应于调制波的磁场。 IC卡将从读写器单元辐射的磁场的一部分与另一个环路线圈进行转换,以从电信号产生电源,并提取发送的数据。 在将数据发送到读/写器单元的情况下,根据数据改变另一环路线圈的负载。 读/写器单元利用第一环形线圈检测与第一环形线圈磁耦合的IC卡的另一环形线圈的负载变化。

    Communication system, communication apparatus and communication method
    44.
    发明授权
    Communication system, communication apparatus and communication method 有权
    通信系统,通信设备和通信方式

    公开(公告)号:US08818312B2

    公开(公告)日:2014-08-26

    申请号:US13614832

    申请日:2012-09-13

    IPC分类号: H04B1/06

    摘要: A method for a communication device includes determining whether a first radio frequency (RF) signal at a level of at least a first predetermined field threshold is detected. The method also includes generating a second RF signal at a level of at least a second predetermined field threshold greater than the first predetermined field threshold, when the communication device receives an instruction to generate the second RF signal and the determining determines that the first RF signal at the level of at least the first predetermined field threshold is not detected. The method further includes receiving a load modulated RF signal in response to the second RF signal.

    摘要翻译: 一种用于通信设备的方法包括确定是否检测到处于至少第一预定场阈值的级别的第一射频(RF)信号。 该方法还包括当通信设备接收到产生第二RF信号的指令并且确定确定第一RF信号时,产生大于第一预定场阈值的至少第二预定场阈值的水平的第二RF信号 至少处于第一预定场阈值的水平。 该方法还包括响应于第二RF信号接收负载调制的RF信号。

    Contactless IC card system
    47.
    发明授权
    Contactless IC card system 有权
    非接触式IC卡系统

    公开(公告)号:US07609109B2

    公开(公告)日:2009-10-27

    申请号:US11688121

    申请日:2007-03-19

    申请人: Shigeru Arisawa

    发明人: Shigeru Arisawa

    IPC分类号: H03D1/10 H03K9/00 H03K9/02

    摘要: In a contactless IC card system, a modulating circuit manufactured in an IC form is operable at a high power efficiency. The demodulating apparatus is configured to include: signal processing means for producing first and second input signals; first clamping circuit for clamping said first input signal; second clamping circuit for clamping said second input signal; first band limiting means for removing a component of said first input signal from an output signal of said first clamping circuit; second band limiting means for removing a component of said second input signal from an output signal of said second clamping circuit; and calculating means for adding, or averaging an output signal of said first band limiting means and an output signal of said second band limiting means.

    摘要翻译: 在非接触IC卡系统中,以IC形式制造的调制电路以高功率效率工作。 解调装置被配置为包括:信号处理装置,用于产生第一和第二输入信号; 用于钳位所述第一输入信号的第一钳位电路; 用于钳位所述第二输入信号的第二钳位电路; 第一频带限制装置,用于从所述第一钳位电路的输出信号中去除所述第一输入信号的分量; 第二频带限制装置,用于从所述第二钳位电路的输出信号中去除所述第二输入信号的分量; 以及用于将所述第一频带限制装置的输出信号和所述第二频带限制装置的输出信号相加或平均的计算装置。

    Data communication device
    49.
    发明授权
    Data communication device 有权
    数据通信设备

    公开(公告)号:US07048196B2

    公开(公告)日:2006-05-23

    申请号:US10919304

    申请日:2004-08-17

    申请人: Shigeru Arisawa

    发明人: Shigeru Arisawa

    IPC分类号: G06K19/06

    摘要: A data communication device includes a first antenna; a semiconductor circuit for generating signals for use in outputting communication data through the first antenna, the semiconductor circuit having a CMOS configuration of a combination of a P-channel MOS transistor and an N-channel MOS transistor on a single chip; and an antenna connection circuit through which the semiconductor circuits is connected to the first antenna. The semiconductor circuit includes a power-supply-connecting MOS drain output part and a ground-connecting MOS drain output part. The antenna connection circuit has a first electric element for inhibiting a current from flowing into the corresponding semiconductor circuit in the power-supply-connecting MOS drain output part.

    摘要翻译: 数据通信设备包括:第一天线; 用于产生用于通过第一天线输出通信数据的信号的半导体电路,所述半导体电路在单个芯片上具有P沟道MOS晶体管和N沟道MOS晶体管的组合的CMOS配置; 以及天线连接电路,半导体电路通过该天线连接电路连接到第一天线。 半导体电路包括电源连接MOS漏极输出部分和接地MOS漏极输出部分。 天线连接电路具有用于抑制电流流入电源连接MOS漏极输出部分中的相应半导体电路的第一电气元件。

    Wireless communication circuit, wireless communication terminal and method, recording medium, and program
    50.
    发明授权
    Wireless communication circuit, wireless communication terminal and method, recording medium, and program 有权
    无线通信电路,无线通信终端和方法,记录介质和程序

    公开(公告)号:US07031662B2

    公开(公告)日:2006-04-18

    申请号:US10676019

    申请日:2003-10-02

    IPC分类号: H04B1/10 H04B15/00

    摘要: In a communication terminal that is capable of carrying out communications based on a plurality of communication standards, for example, a cellular phone, information representing a reception carrier frequency of a wireless channel being received by a cellular-phone functional block is output from a CPU to a contactless-IC-card-reader/writer functional block. In the contactless-IC-card-reader/writer functional block, a controller controls a switching circuit to switch a transmission carrier frequency being used so that harmonic components of an electromagnetic wave radiated from a coil antenna will not work as an electromagnetic-interference wave that affects reception sensitivity of the cellular-phone functional block.

    摘要翻译: 在能够进行基于多个通信标准的通信的通信终端中,例如蜂窝式电话,由蜂窝电话功能块接收的表示无线信道的接收载波频率的信息从CPU 到非接触式IC卡读/写功能块。 在非接触式IC读卡器/写入器功能块中,控制器控制切换电路来切换所使用的传输载波频率,使得从线圈天线发射的电磁波的谐波分量将不能用作电磁干扰波 这影响蜂窝电话功能块的接收灵敏度。