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    • 11. 发明授权
    • Multispeed communications device
    • 多速通讯设备
    • US07221294B1
    • 2007-05-22
    • US11592888
    • 2006-11-03
    • William LoXiaopeng Chen
    • William LoXiaopeng Chen
    • H03M5/06
    • H03M5/145H03M5/16H03M5/20
    • A physical layer device for a network device comprises a converter module that selectively converts an n-bit input to an m-bit output based on first and second mapping functions. A scrambler module selectively scrambles the m-bit output. An encoding module receives the m-bit output from the scrambler module and selectively maps the m-bit output based on the first mapping function to X level output signals and the m-bit output based on the second mapping function to Y level output signals, where X and Y are integers greater than one and X is different than Y.
    • 用于网络设备的物理层设备包括转换器模块,其基于第一和第二映射功能选择性地将n位输入转换为m位输出。 扰频器模块选择性地加扰m位输出。 编码模块从加扰器模块接收m位输出,并将基于第一映射功能的m位输出根据第二映射函数选择性地映射到X电平输出信号和m位输出到Y电平输出信号, 其中X和Y是大于1的整数,X不同于Y.
    • 14. 发明授权
    • Blinder equalizer for QAM receivers
    • Blinder均衡器用于QAM接收机
    • US07693215B2
    • 2010-04-06
    • US11367026
    • 2006-03-01
    • Xiaopeng Chen
    • Xiaopeng Chen
    • H03H7/40H04L25/08
    • H04L27/3845H04L25/03057H04L2025/0342H04L2025/03617
    • Methods and apparatuses for blind equalizers with multiple constant modules. In one embodiment, a circuit, includes: a filter to produce an output based on an input that represents a symbol being received, the symbol being one of a Quadrature Amplitude Modulation (QAM) constellation; a decision engine coupled to the filter to generate a result indicating one region of a plurality of regions in a QAM constellation diagram, the output of the filter being in the indicated region which includes a plurality of symbols of different radii in the constellation diagram; and an error reduction engine coupled to the decision engine and the filter to reduce a difference between a selected one of a plurality of constants and a modulus of the output; where each of the plurality of constants correspond to one of the plurality of regions; and the selected one of the plurality of constants is selected according to the result of the decision engine.
    • 具有多个恒定模块的盲均衡器的方法和装置。 在一个实施例中,电路包括:滤波器,用于基于表示正被接收的符号的输入产生输出,该符号是正交幅度调制(QAM)星座中的一个; 耦合到所述滤波器以产生指示QAM星座图中的多个区域的一个区域的结果的判定引擎,所述滤波器的输出在所述指示区域中,所述指示区域包括星座图中的不同半径的多个符号; 以及错误减少引擎,其耦合到所述决策引擎和所述过滤器,以减少所述多个常数中的所选择的一个和所述输出的模数之间的差; 其中所述多个常数中的每一个对应于所述多个区域中的一个; 并且根据判定引擎的结果选择多个常数中的所选择的一个。
    • 17. 再颁专利
    • Circuits, systems, methods, and software for power factor correction and/or control
    • 用于功率因数校正和/或控制的电路,系统,方法和软件
    • USRE42946E1
    • 2011-11-22
    • US12813467
    • 2010-06-10
    • Xiaopeng ChenJianqing LinHubertus Notohamiprodjo
    • Xiaopeng ChenJianqing LinHubertus Notohamiprodjo
    • G05F1/613G05F1/70
    • G05F1/70H02M1/4225Y02B70/126
    • Circuits, systems, methods and software for controlling a power conversion and/or correcting and/or controlling a power factor in such conversion(s). The present invention generally takes a computational approach to reducing or minimizing zero current periods in the critical mode of power converter operation, and advantageously reduces zero current periods in the critical mode of power converter operation, thereby maximizing the power factor of the power converter in the critical mode and reducing noise that may be injected back into AC power lines. The present power factor controller allows for greater design flexibility, reduced design complexity, and reduced resolution and greater tolerance for error in certain parameter measurements useful in power factor correction and/or control.
    • 用于控制功率转换和/或校正和/或控制这种转换中的功率因数的电路,系统,方法和软件。 本发明通常采用计算方法来减少或最小化功率转换器运行的临界模式中的零电流周期,并且有利地在功率转换器运行的临界模式中减少零电流周期,由此使功率转换器的功率因数最大化 临界模式和减少可能注入到交流电源线中的噪声。 本功率因数控制器允许更大的设计灵活性,降低的设计复杂性和降低的分辨率以及在功率因数校正和/或控制中有用的某些参数测量中对误差的更大误差。
    • 18. 发明授权
    • Multispeed communications device
    • 多速通讯设备
    • US07839309B1
    • 2010-11-23
    • US12356155
    • 2009-01-20
    • William LoXiaopeng Chen
    • William LoXiaopeng Chen
    • H03M5/06
    • H03M5/145H03M5/16H03M5/20
    • A physical layer device includes a converter module to convert input data having a first predetermined number of bits into output data having a second predetermined number of bits. A scrambler module is operable to be activated and deactivated. The scrambler module receives the output data having the second predetermined number of bits. An encoding module modulates the output of the scrambler module in accordance with one of a plurality of modulation types and generates an encoded output signal having an output level. The encoding module is operable to vary the output levels of the encoded output signal.
    • 物理层设备包括转换器模块,用于将具有第一预定位数的输入数据转换成具有第二预定位数的输出数据。 加扰器模块可操作以被激活和去激活。 加扰器模块接收具有第二预定位数的输出数据。 编码模块根据多种调制类型之一调制扰频器模块的输出,并产生具有输出电平的编码输出信号。 编码模块可操作以改变编码的输出信号的输出电平。
    • 19. 发明授权
    • Circuits, systems, methods, and software for power factor correction and/or control
    • 用于功率因数校正和/或控制的电路,系统,方法和软件
    • US07511460B1
    • 2009-03-31
    • US11977869
    • 2007-10-26
    • Xiaopeng ChenJianqing Lin
    • Xiaopeng ChenJianqing Lin
    • G05F1/613G05F1/70
    • G05F1/70H02M1/4225Y02B70/126
    • Circuits, systems, methods and software for controlling a power conversion and/or correcting and/or controlling a power factor in such conversion(s). The present invention generally takes a computational approach to reducing or minimizing zero current periods in the critical mode of power converter operation, and advantageously reduces zero current periods in the critical mode of power converter operation, thereby maximizing the power factor of the power converter in the critical mode and reducing noise that may be injected back into AC power lines. The present power factor controller allows for greater design flexibility, reduced design complexity, and reduced resolution and greater tolerance for error in certain parameter measurements useful in power factor correction and/or control.
    • 用于控制功率转换和/或校正和/或控制这种转换中的功率因数的电路,系统,方法和软件。 本发明通常采用计算方法来减少或最小化功率转换器运行的临界模式中的零电流周期,并且有利地在功率转换器运行的临界模式中减少零电流周期,由此使功率转换器的功率因数最大化 临界模式和减少可能注入到交流电源线中的噪声。 本功率因数控制器允许更大的设计灵活性,降低的设计复杂性和降低的分辨率以及在功率因数校正和/或控制中有用的某些参数测量中对误差的更大误差。
    • 20. 发明授权
    • Multispeed communications device
    • 多速通讯设备
    • US07479906B1
    • 2009-01-20
    • US11801316
    • 2007-05-09
    • William LoXiaopeng Chen
    • William LoXiaopeng Chen
    • H03M5/06
    • H03M5/145H03M5/16H03M5/20
    • A physical layer device comprises a mode selector that selects a mode. A clock selects a clock frequency from T clock frequencies based on the mode. A converter module selects one of N mapping functions based on the mode and converts an n-bit input to an m-bit output based on the selected one of the N mapping functions. A scrambler module scrambles the m-bit output or passes the m-bit output unchanged based on the mode. An encoding module modulates the m-bit output based on the selected clock frequency and one of M modulation modes selected based on the mode, where T, n, m, N and M are integers greater than one and n is not equal to m.
    • 物理层设备包括选择模式的模式选择器。 一个时钟根据该模式从T个时钟频率中选择一个时钟频率。 A转换器模块基于该模式选择N个映射函数之一,并且基于所选择的N个映射函数之一将n位输入转换为m位输出。 扰码器模块对m位输出进行加扰,或者根据该模式使m位输出不变。 编码模块基于所选择的时钟频率和基于模式选择的M个调制模式之一来调制m比特输出,其中T,n,m,N和M是大于1的整数,n不等于m。