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    • 1. 发明授权
    • Reception circuit
    • 接收电路
    • US08681913B2
    • 2014-03-25
    • US13295052
    • 2011-11-12
    • Naohisa TakayamaRyoji HayashiHiroyuki JobaMorishige Hieda
    • Naohisa TakayamaRyoji HayashiHiroyuki JobaMorishige Hieda
    • H03D1/00
    • H04L7/042
    • A reception circuit is provided which can detect the beginning of data regardless of a preamble or a unique word contained or not in a received signal and regardless of coding systems for received signals. The reception circuit includes a correlation operation portion that performs a correlation operation to generate a correlation signal while sliding one symbol of reference signal in relation to a received signal. The reference signal goes to a high level during a first half symbol period and goes to a low level during a second half symbol period. The reception circuit further includes: a delay portion that outputs a delay signal by delaying the received signal for a half symbol period in relation to the received signal; and a data beginning timing detection portion that detects a beginning peak timing for the correlation signal as a beginning timing of data contained in the delay signal.
    • 提供了一种可以检测数据开始的接收电路,而不管前置码或包含或不包含在接收信号中的唯一字,而不管接收信号的编码系统如何。 接收电路包括相关操作部分,其执行相关操作以产生相关信号,同时相对于接收信号滑动参考信号的一个符号。 参考信号在第一半符号周期期间进入高电平,并且在后半个符号周期期间变为低电平。 接收电路还包括:延迟部分,通过相对于所接收的信号延迟接收信号半个符号周期来输出延迟信号; 以及数据开始定时检测部分,其将相关信号的开始峰值定时检测为包含在延迟信号中的数据的开始定时。
    • 2. 发明申请
    • RECEPTION CIRCUIT
    • 接收电路
    • US20120128106A1
    • 2012-05-24
    • US13295052
    • 2011-11-12
    • Naohisa TAKAYAMARyoji HayashiHiroyuki JobaMorishige Hieda
    • Naohisa TAKAYAMARyoji HayashiHiroyuki JobaMorishige Hieda
    • H04L27/06
    • H04L7/042
    • A reception circuit is provided which can detect the beginning of data regardless of a preamble or a unique word contained or not in a received signal and regardless of coding systems for received signals. The reception circuit includes a correlation operation portion that performs a correlation operation to generate a correlation signal while sliding one symbol of reference signal in relation to a received signal. The reference signal goes to a high level during a first half symbol period and goes to a low level during a second half symbol period. The reception circuit further includes: a delay portion that outputs a delay signal by delaying the reference signal for a half symbol period in relation to the received signal; and a data beginning timing detection portion that detects a beginning peak timing for the correlation signal as a beginning timing of data contained in the delay signal.
    • 提供了一种可以检测数据开始的接收电路,而不管前置码或包含或不包含在接收信号中的唯一字,而不管接收信号的编码系统如何。 接收电路包括相关操作部分,其执行相关操作以产生相关信号,同时相对于接收信号滑动参考信号的一个符号。 参考信号在第一半符号周期期间进入高电平,并且在后半个符号周期期间变为低电平。 接收电路还包括:延迟部分,通过相对于所接收的信号将参考信号延迟半符号周期来输出延迟信号; 以及数据开始定时检测部分,其将相关信号的开始峰值定时检测为包含在延迟信号中的数据的开始定时。
    • 7. 发明授权
    • Leakage signal cancellation apparatus
    • 泄漏信号消除装置
    • US07899142B2
    • 2011-03-01
    • US12065808
    • 2006-07-28
    • Ryoji HayashiNaohisa TakayamaMitsuhiro Shimozawa
    • Ryoji HayashiNaohisa TakayamaMitsuhiro Shimozawa
    • H03D1/04H03D1/06H03K5/01H03K6/04H04B1/10H04L1/00H04L25/08
    • H04B1/525G01S7/038
    • A quadrature modulator divides a part of a transmitted signal to generate a cancel signal. A signal comparator compares the amplitude and phase of the cancel signal which is generated by the quadrature modulator with those of a received signal, and outputs signals corresponding to the comparison results to the quadrature modulator. The quadrature modulator generates the cancel signal on the basis of the output signals of the signal comparator, and these components perform feedback control such that the cancel signal has the same amplitude as the leakage signal and is in phase with the leakage signal. A combiner combines the cancel signal with an antiphase cancel signal, which is made to be in opposite phase with the cancel signal outputted from the quadrature modulator, to cancel out the leakage signal.
    • 正交调制器分割发送信号的一部分以产生消除信号。 信号比较器将由正交调制器产生的取消信号的幅度和相位与接收信号的幅度和相位进行比较,并将与比较结果相对应的信号输出到正交调制器。 正交调制器基于信号比较器的输出信号产生消除信号,并且这些分量执行反馈控制,使得消除信号具有与泄漏信号相同的幅度并与泄漏信号同相。 组合器将取消信号与反相消除信号组合,使其与从正交调制器输出的消除信号相反,以抵消泄漏信号。
    • 8. 发明申请
    • LEAKAGE SIGNAL CANCELLATION APPARATUS
    • 泄漏信号取消装置
    • US20090232260A1
    • 2009-09-17
    • US12065808
    • 2006-07-28
    • Ryoji HayashiNaohisa TakayamaMitsuhiro Shimozawa
    • Ryoji HayashiNaohisa TakayamaMitsuhiro Shimozawa
    • H03D1/04
    • H04B1/525G01S7/038
    • A quadrature modulator divides a part of a transmitted signal to generate a cancel signal. A signal comparator compares the amplitude and phase of the cancel signal which is generated by the quadrature modulator with those of a received signal, and outputs signals corresponding to the comparison results to the quadrature modulator. The quadrature modulator generates the cancel signal on the basis of the output signals of the signal comparator, and these components perform feedback control such that the cancel signal has the same amplitude as the leakage signal and is in phase with the leakage signal. A combiner combines the cancel signal with an antiphase cancel signal, which is made to be in opposite phase with the cancel signal outputted from the quadrature modulator, to cancel out the leakage signal.
    • 正交调制器分割发送信号的一部分以产生消除信号。 信号比较器将由正交调制器产生的取消信号的幅度和相位与接收信号的幅度和相位进行比较,并将与比较结果相对应的信号输出到正交调制器。 正交调制器基于信号比较器的输出信号产生消除信号,并且这些分量执行反馈控制,使得消除信号具有与泄漏信号相同的幅度并与泄漏信号同相。 组合器将取消信号与反相消除信号组合,使其与从正交调制器输出的消除信号相反,以抵消泄漏信号。