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1. 发明授权

US5990644A Motor drive circuit 有权
标题翻译：电机驱动电路
公开(公告)号：US5990644A
公开(公告)日：1999-11-23
申请号：US246526
申请日：1999-02-08
申请人： Misao Furuya , Kazuhito Matsuura
发明人： Misao Furuya , Kazuhito Matsuura
IPC分类号： H02P7/06 , H02P7/00 , H02P1/00
CPC分类号： H02P7/04
摘要： A motor drive circuit 1 is driven by a DC power source 2 connected to power source terminals Tv1, Tv2 and has a first drive transistor Q1 for controlling a drive current supplied to a first terminal Tm1 of a motor from the DC power source 2, a second drive transistor Q2 for supplying current drawn from the first terminal Tm1 of the motor 3 to a ground, a third drive transistor Q3 for controlling a drive current supplied to a second terminal Tm2 of the motor 3 from the DC power source 2, a fourth drive transistor Q4 for drawing current from a second terminal Tm2 of the motor 3, a drive control circuit 4 for controlling the operation of the motor 3 by controlling the drive transistors Q1 through Q4 in response to a first and second control signal supplied to a first and second control terminal Tc1, Tc2, a first control transistor Qc1 having the same polarity as, and connected in parallel to and in the reverse direction of, the second drive transistor Q2 and a second control transistor Qc2 having the same polarity as, and connected in parallel to and in the reverse direction of, the fourth drive transistor Q4. The control transistors limit a decrease in voltage at the first and second terminals Tm1 and Tm2 of the motor 3 generated by a counter-electromotive force of the motor 3, making it possible to clamp the voltage at the terminals at a relatively low level. As a result, a lock-up is prevented even with the use of relatively small-capacity diodes, with the advantage that an IC chip of the motor drive circuit can be reduced further in size.
摘要翻译：电动机驱动电路1由与电源端子Tv1，Tv2连接的直流电源2驱动，并且具有用于控制从直流电源2向电动机的第一端子Tm1供给的驱动电流的第一驱动晶体管Q1，用于将从电动机3的第一端子Tm1提取的电流提供给地的第二驱动晶体管Q2，用于从直流电源2控制提供给电动机3的第二端子Tm2的驱动电流的第三驱动晶体管Q3，第四驱动晶体管Q3，用于从电动机3的第二端子Tm2引出电流的驱动晶体管Q4;驱动控制电路4，用于响应于提供给第一和第二控制信号的第一和第二控制信号来控制驱动晶体管Q1至Q4来控制电动机3的操作; 和第二控制端子Tc1，Tc2，与第二驱动晶体管Q2和第二控制晶体管Qc具有相同极性并与其并联连接的反相方向的第一控制晶体管Qc1 2具有与第四驱动晶体管Q4相同的极性，并且与第四驱动晶体管Q4的反向并联连接。控制晶体管限制由电动机3的反电动势产生的电动机3的第一和第二端子Tm1和Tm2的电压降低，使得可以将端子处的电压钳位在相对较低的水平。结果，即使使用相对小容量的二极管也能防止锁定，具有可以进一步减小电动机驱动电路的IC芯片的优点。

2. 发明授权

US5506441A Semiconductor device having pair of transistors 失效
标题翻译：具有一对晶体管的半导体器件
公开(公告)号：US5506441A
公开(公告)日：1996-04-09
申请号：US409543
申请日：1995-03-24
申请人： Misao Furuya
发明人： Misao Furuya
IPC分类号： H03F3/45 , H01L27/02 , H01L29/70
CPC分类号： H01L27/0203 , H03F3/45085 , H03F3/45183 , H03F2203/45371 , H03F2203/45674 , Y10S257/925
摘要： A semiconductor device includes a plurality of groups of transistor elements which are formed on a single semiconductor chip, each group having a first pair of transistor elements which are arranged so as to be symmetrical about a point and a second pair of transistor elements which are arranged, in a direction perpendicular to a direction in which the first pair of transistor elements are arranged, so as to be symmetrical about the point. The first pair of transistor elements in all the plurality of groups are connected in parallel so that a first transistor is formed of the first pair of transistor elements, and the second pair of transistor elements in all the plurality of groups are connected in parallel so that a second transistor is formed of the second pair of transistor elements, the first transistor and the second transistor being paired.
摘要翻译：一种半导体器件包括形成在单个半导体芯片上的多组晶体管元件，每组具有第一对晶体管元件，该第一对晶体管元件被布置成关于点对称且第二对晶体管元件布置在垂直于第一对晶体管元件排列的方向的方向上，以关于该点为对称的方向。所有多个组中的第一对晶体管元件并联连接，使得第一晶体管由第一对晶体管元件形成，并且所有多个组中的第二对晶体管元件并联连接，使得第二晶体管由第二对晶体管元件形成，第一晶体管和第二晶体管配对。

3. 发明授权

US5869989A Amplifying electronic circuit with stable idling current 失效
标题翻译：放大具有稳定怠速电流的电子电路
公开(公告)号：US5869989A
公开(公告)日：1999-02-09
申请号：US739875
申请日：1996-10-31
申请人： Misao Furuya , Seiji Takamatu
发明人： Misao Furuya , Seiji Takamatu
IPC分类号： H03F1/32 , H03F3/30 , H03F3/45
CPC分类号： H03F3/3066 , H03F1/3217
摘要： The semiconductor types of first and second semiconductor type transistors are different from one another and the two transistors are connected in series. An input signal is supplied to each of the bases of the first and second transistors. Each of the collector electric currents of the first and second transistors are thus controlled. An output is provided from the inter-connection point of the first and second transistors. A third transistor supplies the collector electric current which is 1/K.sub.1 times the collector electric current of the second transistor, where K.sub.1 is the current-mirror ratio between the second and third transistors. A fourth transistor has the collector and base connected with one another. The fourth transistor supplies an electric current according to the collector electric current of the third transistor. A fifth transistor has the base electric current controlled by the base electric current of the fourth transistor. The fifth transistor supplies its collector electric current, which is K.sub.2 times the collector electric current of the fourth transistor, to the base of the first transistor, where K.sub.2 is the current-mirror ratio between the fourth and fifth transistors.
摘要翻译：第一和第二半导体型晶体管的半导体类型彼此不同，并且两个晶体管串联连接。输入信号被提供给第一和第二晶体管的每个基极。因此，控制第一和第二晶体管的集电极电流。从第一和第二晶体管的连接点提供输出。第三晶体管提供的集电极电流是第二晶体管的集电极电流的1 / K1倍，其中K1是第二和第三晶体管之间的电流镜比。第四晶体管具有彼此连接的集电极和基极。第四晶体管根据第三晶体管的集电极电流提供电流。第五晶体管具有由第四晶体管的基极电流控制的基极电流。第五晶体管将其第四晶体管的集电极电流的K2倍的集电极电流提供给第一晶体管的基极，其中K2是第四和第五晶体管之间的电流镜比。

4. 发明授权

US06198586B1 Voice recording/playback apparatus for producing a noise level of a voice output unit in a voice recording mode 失效
标题翻译：用于在语音记录模式中降低语音输出单元的噪声水平的语音记录/重放装置
公开(公告)号：US06198586B1
公开(公告)日：2001-03-06
申请号：US09040012
申请日：1998-03-17
申请人： Misao Furuya , Seiji Takamatsu
发明人： Misao Furuya , Seiji Takamatsu
IPC分类号： G11B1512
CPC分类号： G11B33/00 , G11B5/00813 , G11B15/125 , G11B20/24 , G11B31/00
摘要： A voice recording/playback apparatus includes a head unit which records a voice signal in a recording medium and for playing back a recorded voice signal from the recording medium. A playback head amplifier unit amplifies a playback signal output from the head unit. A voice output unit outputs a voice in accordance with the playback signal amplified by the playback head amplifier unit. A muting switch is provided between the playback head amplifier unit and the voice output unit. The muting switch cuts off a connection between the playback head amplifier unit and the voice output unit when a voice recording mode is performed by the head unit.
摘要翻译：语音记录/重放装置包括：头单元，其在记录介质中记录语音信号，并用于从记录介质播放记录的声音信号。回放头放大器单元放大从头单元输出的重放信号。语音输出单元根据由播放头放大器单元放大的重放信号输出声音。在回放头放大器单元和语音输出单元之间提供静音开关。当头单元执行语音记录模式时，静音开关切断播放头放大器单元和语音输出单元之间的连接。

5. 发明授权

US6051960A Switching regulator with reduced power consumption 失效
标题翻译：开关稳压器具有降低的功耗
公开(公告)号：US6051960A
公开(公告)日：2000-04-18
申请号：US922936
申请日：1997-09-03
申请人： Takashi Ito , Misao Furuya
发明人： Takashi Ito , Misao Furuya
IPC分类号： H02M3/155 , G05F3/22 , H02M3/156 , H03F3/45 , H03K7/08 , G05F1/00
CPC分类号： H02M3/156 , G05F3/222
摘要： A switching regulator includes an oscillation circuit for generating a triangular waveform signal having a predetermined frequency, a comparator compares the triangular waveform signal generated by the oscillation circuit with a voltage control signal commensurate with a voltage to be output so as to generate a pulse signal which goes high or low depending on a result of the comparison, and a driving circuit for selecting a portion of the triangular waveform signal generated by the oscillation responsive to the pulse signal generated by the comparator, so as to generate the drive signal for driving the switching element.
摘要翻译：开关调节器包括用于产生具有预定频率的三角形波形信号的振荡电路，比较器将由振荡电路产生的三角形波形信号与与要输出的电压相称的电压控制信号进行比较，以产生脉冲信号，根据比较结果，变为高或低;以及驱动电路，用于根据由比较器产生的脉冲信号选择由振荡产生的三角波形信号的一部分，以产生用于驱动开关的驱动信号元件。

6. 发明授权

US5900786A Oscillation circuit 失效
标题翻译：振荡电路
公开(公告)号：US5900786A
公开(公告)日：1999-05-04
申请号：US902420
申请日：1997-07-29
申请人： Takashi Ito , Misao Furuya
发明人： Takashi Ito , Misao Furuya
IPC分类号： H03K3/014 , H03K3/282 , H03K3/00
CPC分类号： H03K3/014 , H03K3/2823
摘要： A first capacitor is charged by a driving current. A second capacitor is charged by a driving current. A first discharging transistor discharges the first capacitor in accordance with a charged voltage of the second capacitor. A second discharging transistor discharges the second capacitor in accordance with a charged voltage of the first capacitor. The oscillation circuit generates an oscillation signal in accordance with the charged voltages of the first and second capacitors. An oscillation restarting circuit, when the first and second discharging transistors simultaneously perform discharging and thus oscillation stops, causes the discharging of the second discharging transistor to stop, and thereby, restarts the oscillation.
摘要翻译：第一电容器由驱动电流充电。第二电容器由驱动电流充电。第一放电晶体管根据第二电容器的充电电压来放电第一电容器。第二放电晶体管根据第一电容器的充电电压来放电第二电容器。振荡电路根据第一和第二电容器的充电电压产生振荡信号。振荡重启电路，当第一和第二放电晶体管同时进行放电并因此振荡停止时，使第二放电晶体管的放电停止，从而重新开始振荡。

7. 发明授权

US5640090A Sensor IC 失效
标题翻译：传感器IC
公开(公告)号：US5640090A
公开(公告)日：1997-06-17
申请号：US580379
申请日：1995-12-28
申请人： Misao Furuya , Hirohiko Urushiyama , Atsushi Watanabe , Katsuaki Yano
发明人： Misao Furuya , Hirohiko Urushiyama , Atsushi Watanabe , Katsuaki Yano
IPC分类号： G01L1/00 , G01L1/18 , G01L1/22 , G01R33/07 , H01L21/822 , H01L27/04 , H01L29/84 , H01L41/04 , H01L43/06 , G01L1/04
CPC分类号： G01L1/18 , G01L1/225 , G01R33/07
摘要： A sensor IC generates a voltage according to magnetic flux density of an applied magnetic field. The sensor IC includes a plurality of Hall sensors having an identical shape formed adjacent to each other in a semiconductor chip, each of the Hall sensors generating a sensor output voltage which includes a Hall output voltage component in proportion to the magnetic flux density. The sensor IC further includes a plurality of differential amplifiers having an identical circuit formed adjacent to each other in the semiconductor chip, each of the differential amplifiers multiplying the sensor output voltage produced from a corresponding one of the Hall sensors by a given gain. In the sensor IC, by a summing circuit, output signals produced from the plurality of differential amplifiers are summed.
摘要翻译：传感器IC根据所施加的磁场的磁通密度来产生电压。传感器IC包括在半导体芯片中彼此相邻形成的具有相同形状的多个霍尔传感器，每个霍尔传感器产生包括与磁通密度成比例的霍尔输出电压分量的传感器输出电压。传感器IC还包括在半导体芯片中彼此相邻形成的具有相同电路的多个差分放大器，每个差分放大器将由霍尔传感器中相应的一个霍尔传感器产生的传感器输出电压乘以给定的增益。在传感器IC中，通过求和电路将从多个差分放大器产生的输出信号相加。

8. 发明授权

US08796903B2 Piezoelectric vibrator driving circuit 有权
标题翻译：压电振动器驱动电路
公开(公告)号：US08796903B2
公开(公告)日：2014-08-05
申请号：US13303699
申请日：2011-11-23
申请人： Misao Furuya , Hirohiko Yoshioka , Daisuke Takahata , Fumiaki Honda , Kazuyuki Ueda
发明人： Misao Furuya , Hirohiko Yoshioka , Daisuke Takahata , Fumiaki Honda , Kazuyuki Ueda
IPC分类号： H02N2/06
CPC分类号： H02P31/00 , H01L41/042 , H02P25/032
摘要： One embodiment provides a piezoelectric vibrator driving circuit for driving a piezoelectric vibrator, the piezoelectric vibrator having an equivalent circuit in which an LC series resonance circuit, an equivalent resistor Rx connected in series thereto and a damping capacitor Co connected in parallel to them are provided, the driving circuit is configured: to detect a driving current Iz flowing through the entire piezoelectric vibrator; to detect a damping current Iy flowing through the damping capacitor Co; to calculate a series resonance current Ix flowing through the LC series resonance circuit by subtracting the detected damping current Iy from the detected driving current Iz; and to perform a phase adjustment so that a phase difference between the calculated series resonance current Ix and a driving voltage Ve to be applied to the piezoelectric vibrator becomes approximately 0.
摘要翻译：一个实施例提供了一种用于驱动压电振动器的压电振动器驱动电路，该压电振子具有串联连接的LC串联谐振电路，等效电阻器Rx和与它们并联连接的阻尼电容器Co的等效电路，驱动电路被配置为检测流过整个压电振动器的驱动电流Iz; 以检测流过阻尼电容器Co的阻尼电流Iy; 通过从检测到的驱动电流Iz减去检测到的阻尼电流Iy来计算流过LC串联谐振电路的串联谐振电流Ix; 并且进行相位调整，使得计算出的串联谐振电流Ix与施加到压电振动器的驱动电压Ve之间的相位差变为约0。

9. 发明申请

US20120133307A1 PIEZOELECTRIC VIBRATOR DRIVING CIRCUIT 有权
标题翻译：压电振动器驱动电路
公开(公告)号：US20120133307A1
公开(公告)日：2012-05-31
申请号：US13303699
申请日：2011-11-23
申请人： Misao Furuya , Hirohiko Yoshioka , Daisuke Takahata , Fumiaki Honda , Kazuyuki Ueda
发明人： Misao Furuya , Hirohiko Yoshioka , Daisuke Takahata , Fumiaki Honda , Kazuyuki Ueda
IPC分类号： H02P31/00
CPC分类号： H02P31/00 , H01L41/042 , H02P25/032
摘要： One embodiment provides a piezoelectric vibrator driving circuit for driving a piezoelectric vibrator, the piezoelectric vibrator having an equivalent circuit in which an LC series resonance circuit, an equivalent resistor Rx connected in series thereto and a damping capacitor Co connected in parallel to them are provided, the driving circuit is configured: to detect a driving current Iz flowing through the entire piezoelectric vibrator; to detect a damping current Iy flowing through the damping capacitor Co; to calculate a series resonance current Ix flowing through the LC series resonance circuit by subtracting the detected damping current Iy from the detected driving current Iz; and to perform a phase adjustment so that a phase difference between the calculated series resonance current Ix and a driving voltage Ve to be applied to the piezoelectric vibrator becomes approximately 0.
摘要翻译：一个实施例提供了一种用于驱动压电振动器的压电振动器驱动电路，该压电振子具有串联连接的LC串联谐振电路，等效电阻器Rx和与它们并联连接的阻尼电容器Co的等效电路，驱动电路被配置为检测流过整个压电振动器的驱动电流Iz; 以检测流过阻尼电容器Co的阻尼电流Iy; 通过从检测到的驱动电流Iz减去检测到的阻尼电流Iy来计算流过LC串联谐振电路的串联谐振电流Ix; 并且进行相位调整，使得计算出的串联谐振电流Ix与施加到压电振动器的驱动电压Ve之间的相位差变为约0。

10. 发明授权

US5874858A Amplifier system having a constant current regulating unit 失效
标题翻译：具有恒定电流调节单元的放大器系统
公开(公告)号：US5874858A
公开(公告)日：1999-02-23
申请号：US823695
申请日：1997-03-25
申请人： Misao Furuya
发明人： Misao Furuya
IPC分类号： H03F3/50 , H03F3/30
CPC分类号： H03F3/50 , H03F2203/5006 , H03F2203/5009 , H03F2203/5012 , H03F2203/5021 , H03F2203/5024 , H03F2203/5027
摘要： An amplifier system includes a constant current unit which produces a constant current in response to a source voltage from a source voltage terminal. An emitter follower unit has a base, an emitter and a collector, an input signal being supplied to the base, the emitter being connected to the constant current unit, the source voltage being supplied to the collector, the emitter follower unit producing an output signal at the emitter in response to the input signal. A current regulating unit regulates the constant current in response to a collector current fed into the collector of the emitter follower unit, so that the constant current is fed from the emitter of the emitter follower unit into the constant current unit.
摘要翻译：放大器系统包括恒定电流单元，其响应于来自源极电压端子的源极电压产生恒定电流。射极跟随器单元具有基极，发射极和集电极，输入信号被提供给基极，发射极连接到恒流单元，源电压被提供给集电极，射极跟随器单元产生输出信号在发射器处响应于输入信号。电流调节单元响应于馈送到射极跟随器单元的集电极的集电极电流来调节恒定电流，使得恒定电流从射极跟随器单元的发射极馈送到恒定电流单元。

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