公开(公告)号：US20110075307A1

公开(公告)日：2011-03-31

申请号：US12892103

申请日：2010-09-28

Applicant: Kazuaki MUROTA

Inventor： Kazuaki MUROTA

IPC: H02H9/02

CPC classification number: H02H3/093 ,  H02H3/087

Abstract: An overcurrent protection circuit is provided. An overcurrent detecting element is connected between a power source and a load and detects an overcurrent flowing through the load. A main switch element is connected between the load and the overcurrent detecting element and controls flow of current to the load according to a voltage applied between a control end and an input end of the main switch element. The main switch element stops the flow of current to the load when a predetermined time is elapsed after the overcurrent detecting element detects the overcurrent flowing through the load. A first switch element has an output end connected to the control end of the main switch element. A current flows to the first switch when the overcurrent detecting element detects the overcurrent flowing through the load.

Abstract translation: 提供过电流保护电路。 过电流检测元件连接在电源和负载之间，并检测流过负载的过电流。 主开关元件连接在负载和过电流检测元件之间，并且根据施加在主开关元件的控制端和输入端之间的电压来控制到负载的电流流动。 当在过电流检测元件检测到流过负载的过电流之后经过预定时间时，主开关元件停止流向负载的电流。 第一开关元件具有连接到主开关元件的控制端的输出端。 当过电流检测元件检测到流过负载的过电流时，电流流向第一开关。

公开(公告)号：US5166634A

公开(公告)日：1992-11-24

申请号：US727987

申请日：1991-07-10

Applicant: Shoichi Narahashi ,  Toshio Nojima ,  Makoto Maeta ,  Kazuaki Murota

Inventor： Shoichi Narahashi ,  Toshio Nojima ,  Makoto Maeta ,  Kazuaki Murota

IPC: H03F1/32

CPC classification number: H03F1/3235 ,  H03F2201/3212

Abstract: In a feed-forward amplifier which has an error detection circuit for detecting a nonlinear distortion component of a main amplifier and an error rejection circuit for amplifying the detected distortion component by an auxiliary amplifier and injecting it into the main amplifier to cancel an error component, a first pilot signal is injected into a signal input path and a second pilot signal is injected into a signal amplification path of the error detection circuit. A first variable attenuator and a first variable phase shifter of the error detection circuit are adjusted by a control circuit so that the level of the first pilot signal component on an error injection path of the error rejection circuit decreases to minimum. A second variable attenuator and a second variable phase shifter of the error rejection circuit are adjusted by the control circuit so that the level of the second pilot signal component on a signal output path decreases to a minimum. The first pilot signal component which appears on the signal output path is rejected by a filter or cancelled by supplying the error injection path or signal output path with the first pilot signal after adjusting its amplitude and phase. Alternatively, the frequency of the first pilot signal to be injected into the signal input path is spread to lower the level of the first pilot signal per unit spectrum which appears on the signal output path.

公开(公告)号：US08058853B2

公开(公告)日：2011-11-15

申请号：US12312420

申请日：2007-11-15

Applicant: Kazuaki Murota

Inventor： Kazuaki Murota

IPC: G05F1/577

CPC classification number: H02M3/158 ,  H02M2001/009

Abstract: A voltage output circuit has a controller controlling ON/OFF switching of a first switch which switches ON/OFF voltage transformation by a first charge pump circuit in order to turning a first voltage outputted from a first voltage output terminal into a desired value, a second charge pump circuit transforming the voltage with the use of an electric power obtained by storing an input voltage according to ON/OFF of the first switch and outputting the voltage as a second voltage, a second switch selecting whether to store the electric power used for transformation by the second charge pump circuit, and a switching unit switching ON/OFF the second switch on the basis of the second voltage outputted from a second voltage output terminal. The circuit having a simple configuration can transform the input voltage and output desired positive and negative voltage, while accomplishing a reduction in cost and size of the circuit.

Abstract translation: 电压输出电路具有控制第一开关的接通/断开的控制器，该第一开关通过第一电荷泵电路接通/断开电压变换，以将从第一电压输出端子输出的第一电压转换为期望值;第二开关 电荷泵电路使用通过存储根据第一开关的ON / OFF的输入电压而获得的电力来变换电压，并将该电压作为第二电压输出，第二开关选择是否存储用于变换的电力 通过第二电荷泵电路，以及切换单元，基于从第二电压输出端子输出的第二电压来接通/断开第二开关。 具有简单配置的电路可以改变输入电压并输出所需的正负电压，同时实现电路的成本和尺寸的降低。

公开(公告)号：US20100045251A1

公开(公告)日：2010-02-25

申请号：US12312420

申请日：2007-11-15

Applicant: Kazuaki Murota

Inventor： Kazuaki Murota

IPC: G05F1/10

CPC classification number: H02M3/158 ,  H02M2001/009

Abstract: A voltage output circuit has a controller controlling ON/OFF switching of a first switch which switches ON/OFF voltage transformation by a first charge pump circuit in order to turning a first voltage outputted from a first voltage output terminal into a desired value, a second charge pump circuit transforming the voltage with the use of an electric power obtained by storing an input voltage according to ON/OFF of the first switch and outputting the voltage as a second voltage, a second switch selecting whether to store the electric power used for transformation by the second charge pump circuit, and a switching unit switching ON/OFF the second switch on the basis of the second voltage outputted from a second voltage output terminal. The circuit having a simple configuration can transform the input voltage and output desired positive and negative voltage, while accomplishing a reduction in cost and size of the circuit.

Abstract translation: 电压输出电路具有控制第一开关的接通/断开的控制器，该第一开关通过第一电荷泵电路接通/断开电压变换，以将从第一电压输出端子输出的第一电压转换为期望值;第二开关 电荷泵电路使用通过存储根据第一开关的ON / OFF的输入电压而获得的电力来变换电压，并将该电压作为第二电压输出，第二开关选择是否存储用于变换的电力 通过第二电荷泵电路，以及切换单元，基于从第二电压输出端子输出的第二电压来接通/断开第二开关。 具有简单配置的电路可以改变输入电压并输出所需的正负电压，同时实现电路的成本和尺寸的降低。

公开(公告)号：US5302908A

公开(公告)日：1994-04-12

申请号：US995163

申请日：1992-12-22

Applicant: Yoshiaki Tarusawa ,  Toshio Nojima ,  Kazuaki Murota

Inventor： Yoshiaki Tarusawa ,  Toshio Nojima ,  Kazuaki Murota

IPC: H03K5/26 ,  G01R25/08 ,  H03D13/00 ,  H03L7/091 ,  H03L7/183 ,  H03K9/06

CPC classification number: G01R25/08 ,  H03D13/001 ,  H03L7/091 ,  H03L7/183

Abstract: A modulus counter counts first clock pulses to modulus M and outputs the count value as an m-bit reference signal, M being an integer. A latch circuit samples and holds the reference signal in response to a trigger signal generated by a trigger signal generator in synchronism with an input signal. A high-speed counter is supplied with second clock pulses of a frequency higher than that of the first clock pulses and starts counting the second clock pulses in response to the trigger signal and stops the counting in response to a first one of the first clock pulses immediately thereafter. A data processor converts the n-bit count value of the high-speed counter to n-bit data corresponding to a phase fraction of a phase quantization step in the latch, combines the n-bit data as low-order bits with m-bit data from the latch and outputs the combined data as phase difference data.

Abstract translation: 模数计数器将第一个时钟脉冲计数为模数M，并将该计数值作为m位参考信号输出，M为整数。 锁存电路响应于与输入信号同步的触发信号发生器产生的触发信号，采样并保持参考信号。 向高速计数器提供频率高于第一时钟脉冲的第二时钟脉冲，并响应于触发信号开始对第二时钟脉冲进行计数，并响应于第一时钟脉冲中的第一时钟脉冲停止计数 此后立即。 数据处理器将高速计数器的n位计数值转换为对应于锁存器中的相位量化步长的相位分数的n位数据，将n位数据组合为低位位与m位 来自锁存器的数据作为相位差数据输出。

公开(公告)号：US08379360B2

公开(公告)日：2013-02-19

申请号：US12892103

申请日：2010-09-28

Applicant: Kazuaki Murota

Inventor： Kazuaki Murota

IPC: H02H9/02

CPC classification number: H02H3/093 ,  H02H3/087

Abstract: An overcurrent protection circuit is provided. An overcurrent detecting element is connected between a power source and a load and detects an overcurrent flowing through the load. A main switch element is connected between the load and the overcurrent detecting element and controls flow of current to the load according to a voltage applied between a control end and an input end of the main switch element. The main switch element stops the flow of current to the load when a predetermined time is elapsed after the overcurrent detecting element detects the overcurrent flowing through the load. A first switch element has an output end connected to the control end of the main switch element. A current flows to the first switch when the overcurrent detecting element detects the overcurrent flowing through the load.

Abstract translation: 提供过电流保护电路。 过电流检测元件连接在电源和负载之间，并检测流过负载的过电流。 主开关元件连接在负载和过电流检测元件之间，并且根据施加在主开关元件的控制端和输入端之间的电压来控制到负载的电流流动。 当在过电流检测元件检测到流过负载的过电流之后经过预定时间时，主开关元件停止流向负载的电流。 第一开关元件具有连接到主开关元件的控制端的输出端。 当过电流检测元件检测到流过负载的过电流时，电流流向第一开关。

公开(公告)号：US4817197A

公开(公告)日：1989-03-28

申请号：US72819

申请日：1987-07-13

Applicant: Isao Shimizu ,  Katsunori Miyatake ,  Shuji Urabe ,  Kazuaki Murota

Inventor： Isao Shimizu ,  Katsunori Miyatake ,  Shuji Urabe ,  Kazuaki Murota

IPC: H03D7/16 ,  H03J5/02 ,  H03J7/06 ,  H03D3/24 ,  H04B17/00

CPC classification number: H03J7/065 ,  H03D7/161 ,  H03J5/0281

Abstract: Local frequency which is subject to fluctuate in a mobile subscriber set is locked to stable transmit frequency of a base station. A mobile subscriber set (FIG. 3) for angle modulated signal has a frequency mixer (3.6, 3.9), for converting wireless receive frequency to an intermediate frequency by using local frequency (F.sub.L1, F.sub.L2), a limiter (3.11) for limiting amplitude of intermediate frequency signal, a discriminator (3.12) for demodulating angle modulated signal, a standard oscillator (3.1) by using a quartz crystal oscillator and a synthesizer (64) for providing local frequency for said mixer (3.6), a digital frequency counter (3.14) for measuring intermediate frequency, and control means (3.16) for adjusting said standard oscillator (3.1) depending upon error of intermediate frequency measured by said counter (3.14).

Abstract translation: 在移动用户组中经受波动的本地频率被锁定到基站的稳定发射频率。 用于角度调制信号的移动用户组（图3）具有用于通过使用本地频率（FL1，FL2）将无线接收频率转换为中频的频率混合器（3.6,3.9），用于限制幅度的限幅器（3.11） 的中频信号的鉴频器（3.12），用于解调角度调制信号的鉴别器（3.12），通过使用石英晶体振荡器的标准振荡器（3.1）和用于提供所述混频器（3.6）的本地频率的合成器（64），数字频率计数器 3.14）和用于根据由所述计数器（3.14）测量的中频的误差来调节所述标准振荡器（3.1）的控制装置（3.16）。