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公开(公告)号：US5631517A
公开(公告)日：1997-05-20
申请号：US439062
申请日：1995-05-08
申请人： Kazuo Kato , Takashi Sase , Kikuo Tomita , Shuzo Oshima , Muneo Chiba , Tomohiko Douken , Kazuyoshi Takizawa
发明人： Kazuo Kato , Takashi Sase , Kikuo Tomita , Shuzo Oshima , Muneo Chiba , Tomohiko Douken , Kazuyoshi Takizawa
摘要： An electrostrictive revolution type ultrasonic motor includes a piezoelectric ceramic disk shaped stator and a rotor. The piezoelectric ceramic disk shaped stator has an eccentric movement via excitation by two phase pulse like voltage. The rotor is fitted around the circumference of the stator and is transmitted by a rotating torque due to the eccentric movement via frictional contact therebetween. The rotor is formed of a plastic material by injection molding to achieve a reduction of a size variation of the rotor and a stable contact with the stator. A high and stable rotating torque is thereby obtained with a reduced production cost. Further, a driving device for the ultrasonic motor which varies the frequency of a voltage applied to the ultrasonic motor in a stepped manner discriminates the magnitude of the corresponding motor currents and drives the ultrasonic motor with the frequency which causes the maximum motor current. In this manner, a simple structured and low cost driving device which operates at a high speed and at a high resolution with a high efficiency is achieved.
摘要翻译： 电致伸缩型超声波马达包括压电陶瓷盘形定子和转子。 压电陶瓷盘形定子通过两相相位脉冲（如电压）经由激励而具有偏心运动。 转子安装在定子的周围，并由于偏心运动通过其间的摩擦接触而由旋转转矩传递。 转子由塑料材料通过注射成型形成，以实现转子尺寸变化的减小和与定子的稳定接触。 由此可以降低制造成本而获得高稳定的转矩。 此外，用于以阶梯式方式改变施加到超声波马达的电压的频率的超声波马达的驱动装置识别相应电动机电流的大小，并以引起最大电动机电流的频率驱动超声波电动机。 以这种方式，实现了以高速和高分辨率高效率地操作的简单的结构化和低成本的驱动装置。
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公开(公告)号：US5459378A
公开(公告)日：1995-10-17
申请号：US111074
申请日：1993-08-24
申请人： Kazuo Kato , Takashi Sase , Fumio Tajima , Tomohiko Douken
发明人： Kazuo Kato , Takashi Sase , Fumio Tajima , Tomohiko Douken
CPC分类号： H04N17/04
摘要： A CRT display apparatus equipped with a control apparatus for performing a focusing control and a brightness control by changing a grid voltage by means of a potentiometer. The control apparatus includes a motor for driving the potentiometer in response to an externally supplied control signal, and the motor is mechanically arranged with the potentiometer in an integrated form. Both of a plurality of potentiometers and motors for driving the plural potentiometers are formed on the same substrate in an integrated form. Also, the control apparatus is molded with a flyback transformer for constituting the CRT display apparatus. The motor is constructed of either an ultrasonic motor, or a plastic geared motor.
摘要翻译： 一种CRT显示装置，配备有通过电位计改变电网电压来进行聚焦控制和亮度控制的控制装置。 控制装置包括用于响应于外部提供的控制信号驱动电位器的电动机，并且电动机以电位器机械地布置成一体的形式。 用于驱动多个电位计的多个电位计和电动机都以一体形式形成在相同的基板上。 此外，控制装置用用于构成CRT显示装置的回扫变压器模制。 电机由超声波电机或塑料齿轮传动电机构成。
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公开(公告)号：US4396890A
公开(公告)日：1983-08-02
申请号：US146273
申请日：1980-05-05
申请人： Kazuo Kato , Takao Sasayama , Takashi Sase
发明人： Kazuo Kato , Takao Sasayama , Takashi Sase
CPC分类号： H03G3/00 , H03G1/0088
摘要： A variable gain amplifier includes an amplifier for amplifying an input signal, a switch controlled with a given duty factor and a smoothing filter connected to the switch. The filter and the switch constitutes a negative feedback loop for the amplifier of which amplification factor is variably controlled by varying the duty factor of the switch.
摘要翻译： 可变增益放大器包括用于放大输入信号的放大器，以给定占空比控制的开关和连接到开关的平滑滤波器。 滤波器和开关构成放大器的负反馈回路，放大器通过改变开关的占空因数可变地控制放大系数。
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4.发明授权公开(公告)号：US06947514B1
公开(公告)日：2005-09-20
申请号：US09446507
申请日：1998-06-26
申请人： Kazuo Kato , Takashi Sase , Takashi Hotta , Hirokazu Aoki , Kozaburo Kurita
发明人： Kazuo Kato , Takashi Sase , Takashi Hotta , Hirokazu Aoki , Kozaburo Kurita
CPC分类号： H03L7/113
摘要： A phase locked loop (PLL) circuit is provided to operate in a broad band, including two separate loops one of which is for feed-back of an output from an oscillator to the same oscillator through its associative proportional control unit and the other of which is for feed-back of an output of an oscillator to the same oscillator via an integral control unit. The proportional control unit is arranged to control an output frequency of the oscillator and is operable to generate a control signal based on a difference between input and output signals. The integral control unit is arranged to control the phase of an output signal of the oscillator to thereby generate a control signal based on a phase difference between input and output signals.
摘要翻译： 提供锁相环（PLL）电路以在宽带中操作，包括两个单独的环路，其中一个用于通过其关联比例控制单元将振荡器的输出反馈到同一个振荡器，而另一个 用于通过集成控制单元将振荡器的输出反馈到同一个振荡器。 比例控制单元被布置成控制振荡器的输出频率，并且可操作以基于输入和输出信号之间的差产生控制信号。 积分控制单元被布置成控制振荡器的输出信号的相位，从而基于输入和输出信号之间的相位差产生控制信号。
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5.发明授权Complementary transistor circuit and amplifier and CRT display device using the same 失效互补晶体管电路和放大器和CRT显示器件使用相同
公开(公告)号：US5757233A
公开(公告)日：1998-05-26
申请号：US483844
申请日：1995-06-07
申请人： Kazuo Kato , Hideo Sato , Takashi Sase , Kenkichi Yamashita
发明人： Kazuo Kato , Hideo Sato , Takashi Sase , Kenkichi Yamashita
CPC分类号： H03G3/3036 , H03F1/34 , H03F3/19 , H03F3/343 , H03G1/0023 , H04N5/148
摘要： The present invention relates to a complementary transistor circuit and, an amplifier using it, and in particular, to a video amplifier for amplifying video signals and a high-definition CRT display device. In amplifying inputted video signals by using a multiplexer, a gain controller and a current mirror amplifier, each element circuit is formed by using complementary transistor circuits. Circuit simplification is thus attained. In addition, higher precision and band broadening has been realized owing to adoption of a current operation. Further, the present invention makes it possible to eliminate direct from the high voltage output completely by providing a low-voltage output circuit for feedback having a similar relationship with respect to the high-voltage video output stage of the video amplifier, thereby performing negative feedback via a sample-and-hold circuit. This also serves to broaden the bandwidth and reduce power dissipation.
摘要翻译： 互补晶体管电路及其使用的放大器技术领域本发明涉及互补晶体管电路及其使用的放大器，特别涉及用于放大视频信号的视频放大器和高分辨率CRT显示装置。 通过使用多路复用器，增益控制器和电流镜放大器来放大输入的视频信号，通过使用互补晶体管电路形成每个元件电路。 因此实现了电路简化。 此外，由于采用了当前的操作，已经实现了更高的精度和频带扩展。 此外，本发明通过提供与视频放大器的高电压视频输出级具有相似关系的用于反馈的低压输出电路，可以完全消除高压输出的直接，从而执行负反馈 通过采样和保持电路。 这也有助于扩大带宽并降低功耗。
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6.发明授权Complementary transistor circuit and amplifier and CRT display device using the same 失效互补晶体管电路和放大器和CRT显示器件使用相同
公开(公告)号：US5724519A
公开(公告)日：1998-03-03
申请号：US480673
申请日：1990-02-15
申请人： Kazuo Kato , Hideo Sato , Takashi Sase , Kenkichi Yamashita
发明人： Kazuo Kato , Hideo Sato , Takashi Sase , Kenkichi Yamashita
CPC分类号： H03G3/3036 , H03F1/34 , H03F3/19 , H03F3/343 , H03G1/0023 , H04N5/148
摘要： The present invention relates to a complementary transistor circuit and an amplifier using it, and, in particular, to a video amplifier for amplifying video signals and a high-definition CRT display device. In amplifying inputted video signals by using a multiplexer, a gain controller and a current mirror amplifier, each element circuit is formed by using complementary transistor circuits. Circuit simplification is thus attained. In addition, higher precision and band broadening has been realized owing to adoption of a current operation. Further, the present invention makes it possible to eliminate direct feedback from the high voltage output completely by providing a low-voltage output circuit for feedback having a similar relationship with respect to the high-voltage video output stage of the video amplifier, thereby performing negative feedback via a sample-and-hold circuit. This also serves to broaden the bandwidth and reduce power dissipation.
摘要翻译： 互补晶体管电路及其放大器技术领域本发明涉及互补晶体管电路及其使用的放大器，特别涉及用于放大视频信号的视频放大器和高分辨率CRT显示装置。 通过使用多路复用器，增益控制器和电流镜放大器来放大输入的视频信号，通过使用互补晶体管电路形成每个元件电路。 因此实现了电路简化。 此外，由于采用了当前的操作，已经实现了更高的精度和频带扩展。 此外，本发明通过提供与视频放大器的高电压视频输出级具有类似关系的反馈的低电压输出电路，可以完全消除来自高电压输出的直接反馈，由此执行负 通过采样保持电路进行反馈。 这也有助于扩大带宽并降低功耗。
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公开(公告)号：US06437621B2
公开(公告)日：2002-08-20
申请号：US09816100
申请日：2001-03-26
申请人： Kazuo Kato , Takashi Sase , Takashi Hotta , Fumio Murabayashi
发明人： Kazuo Kato , Takashi Sase , Takashi Hotta , Fumio Murabayashi
IPC分类号： H03K317
CPC分类号： C08K5/5419 , C08G77/442 , C08G77/50 , C08L27/12 , C08L69/00
摘要： A waveform shaping circuit is provided so that the duty factor of clock pulses can be set to 50% with high accuracy even if the clock pulses are of a low voltage and a high frequency. An inverter which receives the clock pulses through an alternating current coupling capacitor is provided with a non-linear limiter element for limiting an amplitude of an output symmetrically on positive and negative sides thereof. A first current-limiting impedance and a second current-limiting impedance are connected between a power supply side terminal of the inverter and a power supply bus and between a grounding side terminal of the inverter and a grounding bus, respectively.
摘要翻译： 提供波形整形电路，使得即使时钟脉冲是低电压和高频率，时钟脉冲的占空因数也可以高精度地设置为50％。 通过交流耦合电容器接收时钟脉冲的逆变器设置有非线性限制器元件，用于在其正侧和负侧对称地限制输出的幅度。 逆变器的电源侧端子与电源总线之间以及逆变器的接地侧端子与接地母线之间分别连接有第一限流阻抗和第二限流阻抗。
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公开(公告)号：US4774480A
公开(公告)日：1988-09-27
申请号：US19113
申请日：1987-02-26
申请人： Hideo Sato , Kazuo Kato , Takashi Sase , Kenichi Onda , Ichiro Ikushima
发明人： Hideo Sato , Kazuo Kato , Takashi Sase , Kenichi Onda , Ichiro Ikushima
CPC分类号： H03L7/091 , Y10S331/02
摘要： A PLL comprising a phase comparator circuit for detecting the phase of a pulse signal based upon the input signal and the phase of a pulse signal based upon the output signal, a smoothing filter for smoothing the output of the phase comparator circuit, a loop filter for controlling the oscillation frequency on the basis of the smoothing filter, and a voltage controlled oscillator circuit for sending out the output signal having a frequency corresponding to the voltage based upon the output of the loop filter. Since the smoothing filter is separated from the loop filter, time constants of the smoothing filter and the loop filter can be set independently and with precision. If the time constant of the smoothing filter is chosen to be extremely small, for example, the time constant of the phase-locked loop is defined by the time constant of the loop filter. It is thus possible to define the time constant of the phase-locked loop by only selecting the time constant of the loop filter. Further it is possible to both suppress the jitter of the phase-locked loop and reduce the frequency ripple, for example.
摘要翻译： 一种PLL，包括相位比较器电路，用于基于输入信号检测基于输入信号和脉冲信号的相位的脉冲信号的相位;平滑滤波器，用于平滑相位比较器电路的输出;环路滤波器，用于 基于平滑滤波器控制振荡频率，以及压控振荡器电路，用于根据环路滤波器的输出发出具有与电压对应的频率的输出信号。 由于平滑滤波器与环路滤波器分离，平滑滤波器和环路滤波器的时间常数可以独立且精确地设置。 如果选择平滑滤波器的时间常数极小，则锁相环的时间常数由环路滤波器的时间常数决定。 因此，可以通过仅选择环路滤波器的时间常数来定义锁相环的时间常数。 此外，例如，可以抑制锁相环的抖动并降低频率波动。
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公开(公告)号：US4749961A
公开(公告)日：1988-06-07
申请号：US31836
申请日：1987-03-26
申请人： Kazuo Kato , Takashi Sase , Hideo Sato , Kenichi Onda , Ichiro Ikushima
发明人： Kazuo Kato , Takashi Sase , Hideo Sato , Kenichi Onda , Ichiro Ikushima
CPC分类号： H03L7/148 , H03L7/099 , Y10S331/02
摘要： A voltage controlled oscillator is provided which includes a pair of gain stages constituting a positive feedback path, a pair of buffer stages in cross connection with the gain stages, a pair of loads connected with the corresponding gain stages, each having a parallel connection of an active device resistor and a clamping diode, and a pair of voltage controlled current sources connected with the corresponding gain stages, for supplying constant currents to the gain stages. A timing capacitor is connected with the input sides of both voltage controlled current sources, and is charged or discharged by the constant currents from the current sources. The oscillator further includes a pair of variable bias generating means, connected with the corresponding buffer stages, for generating variable bias voltages are provided, each of which varies the bias voltage to be applied to the corresponding active device in accordance with the output of the corresponding buffer stage in such a manner that the bias voltage is properly set in accordance with the constant current value of said constant current source so as to set the on-resistance of said active device to a suitable value corresponding to the constant current value. With this arrangement the loop gain of the VCO is made constant regardless of the constant current value.
摘要翻译： 提供压控振荡器，其包括构成正反馈路径的一对增益级，与增益级交叉连接的一对缓冲级，与相应的增益级连接的一对负载，每一级均具有 有源器件电阻器和钳位二极管，以及与相应增益级相连的一对电压控制电流源，用于向增益级提供恒定电流。 定时电容器与两个受压电流源的输入侧连接，并由来自电流源的恒定电流充电或放电。 该振荡器还包括一对可变偏置产生装置，与相应的缓冲级相连，用于产生可变的偏置电压，每一个可变偏压产生装置根据对应的输出改变施加到相应的有源装置的偏置电压 缓冲级，使得根据所述恒流源的恒定电流值适当地设置偏置电压，以便将所述有源器件的导通电阻设置为对应于恒定电流值的合适值。 利用这种布置，无论恒定电流值如何，VCO的环路增益都是恒定的。
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10.发明授权Power-supply unit, hard-disk drive, and switching method of the power-supply unit 失效电源单元，硬盘驱动器和电源单元的切换方式公开(公告)号：US08724348B2
公开(公告)日：2014-05-13
申请号：US12869176
申请日：2010-08-26
申请人： Takashi Sase , Akihiko Kanouda , Yosuke Tsuyuki
发明人： Takashi Sase , Akihiko Kanouda , Yosuke Tsuyuki
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M2001/0032 , H02M2001/0048 , Y02B70/1433 , Y02B70/1475 , Y02B70/1491 , Y02B70/16
摘要： A power-supply unit including a transformer, a full bridge circuit having four arm switches on a primary side of the transformer, a rectifier and smoothing circuit including two synchronous rectifier switches on a secondary side of the transformer, a choke coil, and a capacitor, an output terminal in the rectifier and smoothing circuit, a control circuit controlling ON/OFF of the four arm switches of the full bridge circuit and the two synchronous rectifier switches of the rectifier and smoothing circuit, a resonant inductor including a leakage inductor component and a parasitic inductor component on the primary side of the transformer, and a resonant capacitor, and in which the control circuit includes a timing variable unit which varies switching timings of the two synchronous rectifier switches of the rectifier and smoothing circuit based on an output current flowing in the output terminal provided in the rectifier and smoothing circuit.
摘要翻译： 包括变压器的电源单元，在变压器的初级侧具有四个臂开关的全桥电路，整流器和平滑电路，包括在变压器次级侧上的两个同步整流开关，扼流线圈和电容器 整流器和平滑电路中的输出端子，控制全桥电路的四臂开关和整流器和平滑电路的两个同步整流开关的接通/断开的控制电路，包括泄漏电感器元件的谐振电感器和 变压器初级侧的寄生电感器部件和谐振电容器，其中控制电路包括定时可变单元，其基于输出电流流动来改变整流器和平滑电路的两个同步整流开关的开关定时 在整流器和平滑电路中提供的输出端子。
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