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    • 1. 发明授权
    • Automatic gain control circuit
    • 自动增益控制电路
    • US6088583A
    • 2000-07-11
    • US120076
    • 1998-07-21
    • Masahiko ShimizuHideto FurukawaTomonori SatoKoji MatsuyamaMasaaki Fujii
    • Masahiko ShimizuHideto FurukawaTomonori SatoKoji MatsuyamaMasaaki Fujii
    • H03G3/30H04B7/08H04J13/00H04B1/06
    • H03G3/3052H03G3/3068
    • In an automatic gain control (AGC) circuit for controlling a preceding gain control unit and a following gain control unit, the AGC circuit according to the present invention includes at least a comparison unit, a first gain control signal output unit and a second gain control signal output unit. The comparison unit compares a signal level from the following gain control unit with a reference value. The first gain control signal output unit outputs a first gain control signal to the following gain control unit in response to an output signal obtained as a result of comparison in the comparison unit. The second gain control signal output unit outputs a second gain control signal to the preceding gain control unit. Further, the second gain control signal has a time constant longer than that of the first gain control signal output unit, in response to the output signal obtained as the result of comparison in the comparison unit.
    • 在用于控制前一增益控制单元和后续增益控制单元的自动增益控制(AGC)电路中,根据本发明的AGC电路至少包括比较单元,第一增益控制信号输出单元和第二增益控制 信号输出单元。 比较单元将来自以下增益控制单元的信号电平与参考值进行比较。 第一增益控制信号输出单元响应于在比较单元中作为比较结果而获得的输出信号,向第二增益控制单元输出第一增益控制信号。 第二增益控制信号输出单元向前一增益控制单元输出第二增益控制信号。 此外,响应于作为比较结果的比较结果获得的输出信号,第二增益控制信号具有比第一增益控制信号输出单元的时间常数更长的时间常数。
    • 3. 发明申请
    • METHOD FOR PRODUCING OPTICALLY ACTIVE NAPHTHALENE COMPOUND
    • 用于生产光学活性萘基化合物的方法
    • US20150152082A1
    • 2015-06-04
    • US14240466
    • 2012-08-24
    • Koji MatsuyamaMasanori HatsudaMasahiko YoshinagaMitsuhiro YadaKoichi Tanimoto
    • Koji MatsuyamaMasanori HatsudaMasahiko YoshinagaMitsuhiro YadaKoichi Tanimoto
    • C07D401/04C07C255/03C07C25/06
    • C07D401/04C07B53/00C07C25/06C07C255/03
    • The present invention provides an industrially advantageous method for producing an optically active naphthalene compound useful as a therapeutic agent for dermatitis or the like. Specifically, the present invention provides a method for producing an optically active naphthalene compound [I], which comprises: a step of reacting a compound [a-1] and a compound [b-1] with each other in the presence of a base and a catalyst that is composed of a Pd compound and a tertiary phosphine ligand (step a); a step of asymmetrically hydrogenating a compound [c-1] in the presence of a hydrogen donor and a complex that is prepared from a ruthenium compound and a chiral ligand, or alternatively in the presence of an optically active oxazaborolidine compound (a CBS catalyst) and a boron hydride compound (step b); and a step of treating a compound [d-1] with a reducing agent (step c). (In the above formulae, Ra and Rb represent the same or different lower alkyl groups; and X1 represents a halogen atom.)
    • 本发明提供了用于制造用作皮炎等的治疗剂的光学活性萘化合物的工业上有利的方法。 具体而言,本发明提供了一种光学活性萘化合物[I]的制造方法,其特征在于,在碱的存在下,使化合物[a-1]和化合物[b-1] 和由Pd化合物和叔膦配体组成的催化剂(步骤a); 在氢供体和由钌化合物和手性配体制备的络合物的存在下,或者在光学活性的恶唑硼烷化合物(CBS催化剂)存在下,不对称地氢化化合物[c-1] 和硼氢化合物(步骤b); 和用还原剂处理化合物[d-1](步骤c)的步骤。 (上式中,Ra和Rb表示相同或不同的低级烷基,X1表示卤素原子。)