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    • 3. 发明授权
    • Automatic power control apparatus for linear modulation
    • 用于线性调制的自动功率控制装置
    • US5208549A
    • 1993-05-04
    • US747963
    • 1991-08-21
    • Akira Andoh
    • Akira Andoh
    • H03G3/30H03G3/20
    • H03G3/3047
    • An automatic power control apparatus has a level control circuit for adjusting the power level of a linearly modulated signal prior to amplification by a power amplifier, and a coupler for extracting part of the amplified signal. An envelope detector detects the envelope of the extracted signal. A dc component detecting means detects the dc component of the envelope signal. An error amplifier amplifies the difference between this dc component and a reference voltage, and a loop filter filters the amplified difference to produce a control voltage that controls the level control circuit, thus controlling the power of the amplified signal without being affected by ac components of the signal envelope.
    • 自动功率控制装置具有电平控制电路,用于在由放大器放大之前调整线性调制信号的功率电平,以及用于提取部分放大信号的耦合器。 包络检测器检测提取的信号的包络。 直流分量检测装置检测包络信号的直流分量。 误差放大器放大该直流分量与参考电压之间的差值,环路滤波器滤除放大的差值,产生控制电平控制电路的控制电压,从而控制放大信号的功率,而不受交流分量的影响 信号包络。
    • 4. 发明授权
    • Phase lock loop frequency synthesizer
    • 锁相环频率合成器
    • US5461344A
    • 1995-10-24
    • US144523
    • 1993-11-02
    • Akira Andoh
    • Akira Andoh
    • H03L7/089H03L7/107H03L7/187H03L7/189H03L7/199
    • H03L7/189H03L7/107H03L7/0891
    • A phase lock loop frequency synthesizer is applied to radio communication devices or the like, in order to reduce frequency error at a time of frequency changing, and considerably reduce a frequency changing time. At the time of frequency changing, a first loop filter performs frequency coarse adjustment, and charges or discharges a capacitor in a second loop filter to voltage corresponding to target frequency. Further, a controller feeds a voltage controlled oscillator with a frequency fine control data so as to output the target frequency, and controls a loop filter in a phase lock loop to be switched over from the first loop filter to the second loop filter.
    • 将锁相环频率合成器应用于无线通信装置等,以便降低频率变化时的频率误差,并且显着地减少频率变化时间。 在频率变化时,第一环路滤波器进行频率粗调,并且将第二环路滤波器中的电容器充电或放电到对应于目标频率的电压。 此外,控制器馈送具有频率精细控制数据的压控振荡器以输出目标频率,并且控制锁相环中的环路滤波器从第一环路滤波器切换到第二环路滤波器。
    • 6. 发明申请
    • Load drive apparatus
    • 负载驱动装置
    • US20070241702A1
    • 2007-10-18
    • US11783062
    • 2007-04-05
    • Masatoshi YoukaiSatoshi YoshimuraAkira Andoh
    • Masatoshi YoukaiSatoshi YoshimuraAkira Andoh
    • H02P7/06
    • H02P7/29
    • A load drive apparatus includes a noise filter, which includes a coil connected in series between a power source and a load, and a switching transistor connected in parallel across the coil, and a control circuit which is operated based on a drive signal. The control circuit turns on the switching transistor of the noise filter in case of subjecting the load to a full-on drive, thereby to short-circuit the coil and to form a power supply path including the switching transistor without the coil. The control circuit turns off the switching transistor of the noise filter in case of subjecting the load to a PWM drive, thereby to form a power supply path including the coil.
    • 负载驱动装置包括噪声滤波器,其包括串联连接在电源和负载之间的线圈以及跨越线圈并联连接的开关晶体管,以及基于驱动信号操作的控制电路。 控制电路在对负载进行全导通驱动的情况下导通噪声滤波器的开关晶体管,从而使线圈短路并形成包括没有线圈的开关晶体管的电源路径。 在对负载进行PWM驱动的情况下,控制电路关闭噪声滤波器的开关晶体管,从而形成包括线圈的电源路径。
    • 7. 发明授权
    • Frequency synthesizer
    • 频率合成器
    • US5107220A
    • 1992-04-21
    • US682255
    • 1991-04-09
    • Akira Andoh
    • Akira Andoh
    • H03L7/187H03L7/089H03L7/107H03L7/197
    • H03L7/107H03L7/1972H03L7/0891
    • A frequency synthesizer includes a control circuit which outputs changeover signals for bringing one of a number of filters included in a loop filter into electrical connection with a VCO outputting a desired frequency signal, such that a phase difference signal passes through one filter when a demand for frequency changeover is made, and provides a frequency division ratio corresponding to said one filter to a variable frequency divider and a reference frequency divider whose phases are compared to produce the phase difference signal. In addition, the control circuit successively supplies changeover signals for performing selection of respective filters through each of which the phase difference signal passes, and provides frequency division ratios corresponding to filters tuned to the variable frequency divider and the reference frequency divider to change the output frequency of the VCO incrementally. Furthermore, the control circuit provides changeover signals for connection filters employed in a steady state. The time required between each step in the frequency changeover process can be shortened by setting a time constant for each of the filters to a value such that an intermediate output signal representative of a frequency determined by the frequency division ratio corresponding to each filter is stabilized in a short period of time.
    • 8. 发明授权
    • Linear-modulation type radio transmitter
    • 线性调制型无线电发射机
    • US5113525A
    • 1992-05-12
    • US600379
    • 1990-10-19
    • Akira Andoh
    • Akira Andoh
    • H03C1/02H03G3/00H03G3/20H04B1/04H04B7/005
    • H04W52/52H03C1/02H03G3/005H03G3/3042H04B2001/0416
    • The present invention relates to a radio transmitter which transmits from an antenna a carrier wave linearly modulated based on a signal to be transmitted. Since a monitor wave with the predetermined level applied to a transmission power amplifier is amplified and the level of the amplified monitor wave is thereafter detected, followed by adjustment of the gain of the transmission power amplifier based on its level detected, or since the comparison between the level of an envelope component of a signal prior to modulation and that of an amplified signal is made and the gain of the transmission power amplifier is adjusted based on the result of its comparison, mean transmission power is maintained at a predetermined value.
    • 无线发射机技术领域本发明涉及一种从天线发送基于要发射的信号线性调制的载波的无线发射机。 由于对发送功率放大器施加了预定电平的监视波被放大,此后检测到放大的监视波的电平,接着根据检测到的电平调整发送功率放大器的增益,或者由于 进行调制之前的信号的包络分量的电平和放大信号的信号分量的电平,并且基于其比较的结果调整发送功率放大器的增益,将平均发送功率维持在预定值。
    • 9. 发明授权
    • Load drive apparatus
    • 负载驱动装置
    • US07612511B2
    • 2009-11-03
    • US11783062
    • 2007-04-05
    • Masatoshi YoukaiSatoshi YoshimuraAkira Andoh
    • Masatoshi YoukaiSatoshi YoshimuraAkira Andoh
    • H02P6/00
    • H02P7/29
    • A load drive apparatus includes a noise filter, which includes a coil connected in series between a power source and a load, and a switching transistor connected in parallel across the coil, and a control circuit which is operated based on a drive signal. The control circuit turns on the switching transistor of the noise filter in case of subjecting the load to a full-on drive, thereby to short-circuit the coil and to form a power supply path including the switching transistor without the coil. The control circuit turns off the switching transistor of the noise filter in case of subjecting the load to a PWM drive, thereby to form a power supply path including the coil.
    • 负载驱动装置包括噪声滤波器,其包括串联连接在电源和负载之间的线圈以及跨越线圈并联连接的开关晶体管,以及基于驱动信号操作的控制电路。 控制电路在对负载进行全导通驱动的情况下导通噪声滤波器的开关晶体管,从而使线圈短路并形成包括没有线圈的开关晶体管的电源路径。 在对负载进行PWM驱动的情况下,控制电路关闭噪声滤波器的开关晶体管,从而形成包括线圈的电源路径。
    • 10. 发明申请
    • Preventive and/or therapeutic drugs for inflammatory intestinal diseases
    • 炎症性肠病的预防和/或治疗药物
    • US20060135588A1
    • 2006-06-22
    • US10526943
    • 2003-09-09
    • Yoshio ArakiAkira AndohYoshihide Fujiyama
    • Yoshio ArakiAkira AndohYoshihide Fujiyama
    • A61K31/4152
    • A61K31/4152C07D231/20
    • The object of the present invention is to provide a medicament useful for preventing and/or treating inflammatory bowel disease. The present invention provides a medicament for preventing and/or treating inflammatory bowel disease which comprises as an active ingredient a pyrazolone derivative represented by the following formula (I) or a physiologically acceptable salt thereof, or a hydrate thereof or a solvate thereof: wherein R1 represents a hydrogen atom, an aryl group, an alkyl group, or an alkoxycarbonylalkyl group; R2 represents a hydrogen atom, an aryloxy group, an arylmercapto group, an alkyl group or a hydroxyalkyl group; or R1 and R2 are combined with each other to represent an alkylene group; and R3 represents a hydrogen atom, an alkyl group, a cycloalkyl group, a hydroxyalkyl group, a benzyl group, a naphthyl group, a phenyl group, or a phenyl group substituted with 1 to 3 substituents selected from the group consisting of an alkyl group, an alkoxy group, a hydroxyalkyl group, an alkoxycarbonyl group, an alkylmercapto group, an alkylamino group, a dialkylamino group, a halogen atom, a trifluoromethyl group, a carboxyl group, a cyano group, a hydroxyl group, a nitro group, an amino group and an acetamide group.
    • 本发明的目的是提供可用于预防和/或治疗炎症性肠病的药物。 本发明提供一种预防和/或治疗炎性肠病的药物,其包含作为活性成分的由下式(I)表示的吡唑啉酮衍生物或其生理学上可接受的盐或其水合物或其溶剂合物:其中R 代表氢原子,芳基,烷基或烷氧基羰基烷基; R 2表示氢原子,芳氧基,芳基巯基,烷基或羟烷基; 或R 1和R 2彼此结合以表示亚烷基; R 3表示氢原子,烷基,环烷基,羟基烷基,苄基,萘基,苯基或被1〜3个取代基取代的苯基 由烷基,烷氧基,羟基烷基,烷氧基羰基,烷基巯基,烷基氨基,二烷基氨基,卤素原子,三氟甲基,羧基,氰基, 羟基,硝基,氨基和乙酰胺基。