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    • 111. 发明申请
    • METHOD AND DEVICE FOR DOWNCONVERTING THE SAMPLING FREQUENCY OF A DIGITAL SIGNAL, FOR EXAMPLE IN A NON-INTEGER FREQUENCY RATIO
    • 用于将数字信号的采样频率用于非整数频率比例的方法和装置
    • US20090207959A1
    • 2009-08-20
    • US12372258
    • 2009-02-17
    • Samuel DuboulozAntoine Hue
    • Samuel DuboulozAntoine Hue
    • H04L7/00
    • H03H17/0642H03H2218/10
    • A method for converting a sampling frequency of a digital signal sampled at a first sampling frequency includes receiving digital signal input samples, and forming output samples corresponding to a second sampling frequency based on the digital signal input samples and an interpolation filter. The first sampling frequency may be larger than the second sampling frequency. The method may further include delivering the output samples. Forming output samples includes, for each of the digital signal input samples, updating current values of N successive output samples with N contributions. The N contributions may be respectively calculated based on a value of a current input sample of the digital input samples weighted by values of N filter coefficients associated with the current input sample, N being fixed and identical for all the digital signal input samples regardless of a value of the conversion ratio between the first and second sampling frequencies.
    • 用于转换以第一采样频率采样的数字信号的采样频率的方法包括接收数字信号输入采样,并且基于数字信号输入采样和内插滤波器形成对应于第二采样频率的输出采样。 第一采样频率可以大于第二采样频率。 该方法还可以包括递送输出样本。 对于每个数字信号输入样本,形成输出样本包括以N个贡献更新N个连续输出样本的当前值。 可以基于由与当前输入样本相关联的N个滤波器系数的值加权的数字输入样本的当前输入样本的值分别计算N个贡献,N对于所有数字信号输入样本是固定的和相同的,而不管 第一和第二采样频率之间的转换比值。
    • 114. 再颁专利
    • Method and apparatus for RF common-mode noise rejection in a DSL receiver
    • 用于DSL接收机中RF共模噪声抑制的方法和装置
    • USRE40149E1
    • 2008-03-11
    • US10956017
    • 2004-09-30
    • Roman Vitenberg
    • Roman Vitenberg
    • H04B3/50
    • H04L25/0274H04B3/30H04L25/0292H04L25/10H04L27/0002
    • A receiver for high-speed data communications, which receives a differential signal through a pair of signal lines. The receiver includes a common-mode choke, which has first and second signal windings, which are respectively coupled in series to the pair of signal lines so as to attenuate common-mode interference in the differential signal. The choke also has a sampling winding, which is inductively coupled to the signal windings so as to generate a sampled signal responsive to current flowing in the signal windings. Signal processing circuitry is coupled to receive the sampled signal from the sampling winding and to receive the differential signal from the signal windings and to process the differential signal responsive to the sampled signal.
    • 用于高速数据通信的接收机,其通过一对信号线接收差分信号。 接收机包括共模扼流圈,它具有第一和第二信号绕组,它们分别与该对信号线串联耦合,以便衰减差分信号中的共模干扰。 扼流圈还具有采样绕组,其被感应耦合到信号绕组,以便响应于在信号绕组中流动的电流产生采样信号。 信号处理电路被耦合以从采样绕组接收采样信号,并从信号绕组接收差分信号,并根据采样信号处理差分信号。
    • 116. 发明授权
    • Communication start-up with variant spectral density mask
    • 通信启动与变化频谱密度掩码
    • US07295621B2
    • 2007-11-13
    • US11190770
    • 2005-07-27
    • Rami VerbinIlan SharferOsnat Neulender
    • Rami VerbinIlan SharferOsnat Neulender
    • H04L27/28
    • H04L27/2602
    • A method is provided for initiating communications over a channel between a transmitter and a receiver within a specified spectral range, subject to a mask to be applied at the transmitter so as to attenuate at least one segment of the spectral range. The method includes providing to the receiver a definition of the at least one segment and of a level of attenuation to be applied within the at least one segment during a training interval of the communications. A training signal is transmitted from the transmitter to the receiver while applying to the training signal the level of attenuation within the at least one segment. The receiver compensates for a response of the channel based on the received training signal and on the definition of the at least one segment and of the level of attenuation.
    • 提供了一种用于在特定光谱范围内的发射机和接收机之间的信道上发起通信的方法,经受要在发射机处应用的掩码,以便衰减光谱范围的至少一个段。 所述方法包括:在所述通信的训练间隔期间向所述接收机提供所述至少一个段的定义和要在所述至少一个段内应用的衰减水平。 训练信号从发射机发射到接收机,同时向训练信号施加至少一个段内的衰减水平。 接收机根据接收到的训练信号和至少一个段的定义以及衰减水平来补偿信道的响应。