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1. 发明申请

WO1998033274A1 POWER SWITCH CIRCUIT 审中-公开
标题翻译：电源开关电路
公开(公告)号：WO1998033274A1
公开(公告)日：1998-07-30
申请号：PCT/JP1997000157
申请日：1997-01-24
申请人： HITACHI, LTD. , SAKAMOTO, Kozo , YOSHIDA, Isao
发明人： HITACHI, LTD.
IPC分类号： H03K17/082
CPC分类号： H03K17/0822 , H03K2017/0806
摘要： A power switch circuit, whose manufacturing cost can be reduced by integrating a control circuit for overheat/overcurrent protection with an insulated-gate semiconductor device such as a power MOSFET (30) or IGBT (insulated-gate bipolar transistor). For high-speed operation, the insulated-gate device is connected at its gate with a MOSFET (32) as a gate resistor, and switches (SW2, SW3) are provided so that a parasitic npn transistor in the MOSFET (32) can never be forward-biased between its emitter and base to prevent the increase in gate-drain leakage and the decrease in allowable drain voltage.
摘要翻译：电力开关电路的制造成本可以通过将过热/过电流保护用的控制电路与诸如功率MOSFET（30）或IGBT（绝缘栅双极晶体管）的绝缘栅极半导体器件集成来降低。为了高速运行，绝缘栅极器件的门极与MOSFET（32）连接，作为栅极电阻，并提供开关（SW2，SW3），使MOSFET（32）中的寄生npn晶体管永远不会在其发射极和基极之间被正向偏置，以防止栅极漏极泄漏的增加和允许的漏极电压的降低。

2. 发明申请

WO1996005650A1 MOTOR DRIVING SYSTEM 审中-公开
标题翻译：电机驱动系统
公开(公告)号：WO1996005650A1
公开(公告)日：1996-02-22
申请号：PCT/JP1995001435
申请日：1995-07-19
申请人： HITACHI, LTD. , MORIKAWA, Masatoshi , SEKI, Kunio , KOKAMI, Yasuhiko , SAKAMOTO, Kozo , YOSHIDA, Isao
发明人： HITACHI, LTD.
IPC分类号： H02P06/06
CPC分类号： H02P6/06
摘要： The drive circuit of a three-phase motor (1) generates a sine-wave PWM signal by using an induced voltage (11) and outputs a sine-wave current by driving upper and lower arms (2, 3, 4, 5, 6 and 7) according to the PWM signals. A filter (10) picks up the induced voltage (11) from an output voltage (9) and sends the voltage (11) to a sine-wave amplitude controlling section (12) and a speed measuring section (14). A microprocessor (15) measures the rotative speed of the motor (1) based on a speed signal from the speed measuring section (14) and controls the amplitude of the induced voltage (11) based on an amplitude controlling signal for acceleration and deceleration. Thereafter, PWM generating sections generate sine-wave PWM signals by using a triangular-wave carrier (13). In order to prevent through current from being generated at the output, preventive circuits (28, 29 and 30) comprising switches (35 and 36) and resistors (37 and 38) are provided. Through current is prevented also by offsetting the carrier (13). All the analog circuits of the integrated circuit are constituted of MOS circuits so as to simplify the process. By the system the power consumption of a brushless motor provided with no sensor is reduced to a half or less and, in addition, the electromagnetic noise of the motor is remarkably reduced. Moreover, since the analog circuits are constituted of MOS circuits, the manufacturing cost of the integrated circuit is reduced.
摘要翻译：三相电动机（1）的驱动电路通过使用感应电压（11）产生正弦波PWM信号，通过驱动上下臂（2,3,4,5,6）输出正弦波电流和7）根据PWM信号。滤波器（10）从输出电压（9）拾取感应电压（11），并将电压（11）发送到正弦波幅度控制部分（12）和速度测量部分（14）。微处理器（15）基于来自速度测量部（14）的速度信号来测量电动机（1）的旋转速度，并且基于用于加速和减速的幅度控制信号来控制感应电压（11）的振幅。此后，PWM生成部通过使用三角波载波（13）产生正弦波PWM信号。为了防止在输出端产生通过电流，提供包括开关（35和36）和电阻器（37和38）的防止电路（28,29和30）。也可以通过抵消载体（13）来防止通过电流。集成电路的所有模拟电路由MOS电路构成，以简化处理。通过该系统，没有传感器的无刷电动机的功率消耗减少到一半以下，此外，电动机的电磁噪声显着降低。此外，由于模拟电路由MOS电路构成，集成电路的制造成本降低。

3. 发明申请

WO1999027646A1 HIGH-FREQUENCY AMPLIFIER CIRCUIT DEVICE AND HIGH-FREQUENCY TRANSMISSION SYSTEM USING THE SAME 审中-公开
标题翻译：高频放大器电路装置及其高频传输系统
公开(公告)号：WO1999027646A1
公开(公告)日：1999-06-03
申请号：PCT/JP1997004248
申请日：1997-11-21
申请人： HITACHI, LTD. , SAKAMOTO, Kozo , KATSUEDA, Mineo , YOSHIDA, Isao , HOTTA, Masao
发明人： HITACHI, LTD.
IPC分类号： H03F03/60
CPC分类号： H01L24/05 , H01L23/66 , H01L24/06 , H01L24/48 , H01L24/49 , H01L24/73 , H01L2223/6611 , H01L2223/6644 , H01L2224/02166 , H01L2224/04042 , H01L2224/05 , H01L2224/05554 , H01L2224/32225 , H01L2224/48095 , H01L2224/48101 , H01L2224/48227 , H01L2224/4847 , H01L2224/48472 , H01L2224/49113 , H01L2224/49175 , H01L2224/73265 , H01L2924/00014 , H01L2924/01058 , H01L2924/01074 , H01L2924/14 , H01L2924/15153 , H01L2924/1517 , H01L2924/3011 , H03F3/601 , H01L2924/00 , H01L2924/00012 , H01L2224/85399 , H01L2224/05599
摘要： A high-frequency power amplifier circuit device, with the frequency of the operating band between 500 MHz and approximately 10 GHz and power level of not lower than 0.5 W, has a problem to be settled that no increase in power level can be expected in proportion to the increase in the gate width of a power transistor. In addition to the solution of the above problem, an optimal high-frequency power amplifier circuit device and a high-frequency transmission system using the device are constituted to reduce the space in the matching circuit, to improve the linearity and to prevent oscillation in a power transistor (10) and an input/output matching circuit in such a way that the grounds (2) and (4) of an input-side strip line (61) and output-side strip line (62) are separated from each other and the grounds (2) and (4) are respectively connected to an input-side ground electrode (24a) and output-side ground electrode (23a) provided on a semiconductor chip carrying the power transistor (10). Consequently, the effective source impedance component which has been the cause of the deterioration of high-frequency power amplifier circuit in mutual conductance can be reduced.
摘要翻译：具有500MHz至约10GHz之间的工作频带的频率和不低于0.5W的功率电平的高频功率放大器电路装置有一个问题需要解决，不能预期功率级别的增加可以按比例到功率晶体管的栅极宽度的增加。除了上述问题的解决之外，还构成了使用该装置的最佳高频功率放大器电路装置和高频传输系统，以减小匹配电路中的空间，从而提高线性度和防止振荡功率晶体管（10）和输入/输出匹配电路，使得输入侧带状线（61）和输出侧带状线（62）的接地（2）和（4）彼此分离并且接地（2）和（4）分别连接到设置在承载功率晶体管（10）的半导体芯片上的输入侧接地电极（24a）和输出侧接地电极（23a）。因此，可以降低高频功率放大器电路在互导中的恶化的有效源阻抗分量。

4. 发明专利

JP2002355284A ROLLING BODY MASSAGING MACHINE FOR LYING DOWN USER 失效
公开(公告)号：JP2002355284A
公开(公告)日：2002-12-10
申请号：JP2001164144
申请日：2001-05-31
申请人： SAKAMOTO KOZO
发明人： SAKAMOTO KOZO , TSUSHIMA KUNIO
IPC分类号： A61H15/00
摘要： PROBLEM TO BE SOLVED: To provide a rolling body massaging machine for lying down user, which can massage the spine lower than the middle part of the dorsal vertebra and a desired part around there by rolling in desired intensity and rhythm to recover flexibility of muscles and tendons to correct distortion of the spine, the pelvis, etc., and is expected to give relaxation effect to cure a user by release feeling of unexpected motion. SOLUTION: This is a rolling body massaging machine for a lying down user equipped with a head and neck support mechanism to support the head and the neck as the body support point and rolling rollers to support the back part as the rolling support point. The user's body is supported in a bridge shape by the head and neck support mechanism and the rolling rollers and the user's back part to receive reaction force of body weight is rolled and massaged.

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