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    • 1. 发明授权
    • Circuit and method for compensating for nonliner distortion of power amplifier
    • 补偿功率放大器非线性失真的电路和方法
    • US07248644B2
    • 2007-07-24
    • US10774462
    • 2004-02-10
    • Takahiro AdachiMasahiro Kawai
    • Takahiro AdachiMasahiro Kawai
    • H04L25/49H03K7/00
    • H03F1/3294
    • A nonlinear distortion compensating circuit for compensating for a nonlinear distortion caused by a power amplifier for amplifying an input signal has a power calculator for calculating a power value of the input signal, an operating point setting unit for calculating an apparent power value from temperature information, supplied from an external source, representative of the measured temperature of the power amplifier and the power value calculated by the power calculator, based on a relationship, given beforehand to the operating point setting unit, between input vs. output characteristics of the power amplifier and the temperature of the power amplifier, an inverse characteristics calculator for calculating an inversion of the nonlinear distortion from inverse characteristics data, given beforehand to the inverse characteristics calculator, and a complex multiplier for adding the inversion calculated by the inverse characteristics calculator to the input signal.
    • 用于补偿由用于放大输入信号的功率放大器引起的非线性失真的非线性失真补偿电路具有用于计算输入信号的功率值的功率计算器,用于从温度信息计算视在功率值的工作点设定单元, 从外部源提供,代表功率放大器的测量温度和由功率计算器计算的功率值,基于事先给予工作点设定单元的关系,在功率放大器的输入与输出特性之间,以及 功率放大器的温度,用于从预测给予逆特性计算器的反特性数据计算非线性失真的反演的逆特性计算器,以及用于将由逆特性计算器计算的反演与输入信号相加的复数乘法器 。
    • 6. 发明申请
    • Electrophotographic Photoreceptor
    • 电子照相光感受器
    • US20090239167A1
    • 2009-09-24
    • US12227356
    • 2007-05-16
    • Takahiro Adachi
    • Takahiro Adachi
    • G03G5/04G03G15/04
    • G03G5/0564G03G5/0592G03G5/0596
    • This invention provides an electrophotographic photoreceptor having improved resistance to soiling by a human body-derived substance and a high image stability. The electrophotographic photoreceptor comprises an electroconductie substrate and a photosensitive layer provided on the substrate and is characterized in that the photosensitive layer contains, as a binder resin, a polycarbonate resin comprising constituent units represented by the following formula (A) and the following formula (B), wherein R1 to R4 represent a hydrogen atom, a methyl group or the like; and X represents an alkylene group or the like. 3 to 50% by weight of the total constituent units is accounted for by the constituent units of formula (A) and the intrinsic viscosity is 0.3 to 2 dl/g. [Chemical formula 1] (A)(B)
    • 本发明提供了具有改善的抗人体衍生物质污染性和高图像稳定性的电子照相感光体。 电子照相感光体包括电导基体和设置在基底上的感光层,其特征在于感光层含有作为粘合剂树脂的包含由下式(A)和下式(B)表示的构成单元的聚碳酸酯树脂 ),其中R 1至R 4表示氢原子,甲基等; X表示亚烷基等。 总组成单元的3〜50重量%由式(A)的构成单元计,特性粘度为0.3〜2dl / g。 [化学式1](A)(B)
    • 9. 发明申请
    • CLOCK SYNCHRONIZATION CIRCUIT
    • 时钟同步电路
    • US20080080650A1
    • 2008-04-03
    • US11864042
    • 2007-09-28
    • Takahiro Adachi
    • Takahiro Adachi
    • H04L7/00
    • H04L7/0029
    • A clock synchronization circuit includes a clock generation circuit generating a sampling clock for sampling a received signal from an output of a local oscillator, a phase error detection circuit finding a phase error between sampling timing of the sampling clock and ideal sampling timing, and a timing correction circuit finding a correction quantity to correct a frequency error between a frequency of the sampling clock and a frequency of the ideal sampling timing and the phase error every sampling timing of the sampling clock, and outputting a sampling value interpolated according to the found correction quantity.
    • 时钟同步电路包括:时钟生成电路,生成用于从本地振荡器的输出采样接收信号的采样时钟;相位误差检测电路,其求出采样时钟的采样定时与理想采样定时之间的相位误差;以及定时 校正电路,用于校正采样时钟的频率和理想采样定时的频率与采样时钟的每个采样定时的相位误差之间的频率误差的校正量,并输出根据所找到的校正量内插的采样值 。