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1. 发明授权

US6130989A Motor drive circuit 有权
标题翻译：电机驱动电路
公开(公告)号：US6130989A
公开(公告)日：2000-10-10
申请号：US351898
申请日：1999-07-13
申请人： Masao Mizumoto , Takashi Someya , Tetsuya Yoshitomi
发明人： Masao Mizumoto , Takashi Someya , Tetsuya Yoshitomi
IPC分类号： H02P6/10 , H02P6/14 , H02P3/18
CPC分类号： H02P6/10 , H02P6/14 , H02P2209/07
摘要： In a motor, drive transistors (7, 9) are turned off by drive signals I, J output from a control circuit (10) at a point adjacent to a phase changeover point of the energizing to drive coils (1, 2), so that no drive current flows through the drive coils (1, 2). Since the counter electromotive forces of the drive coils (1, 2) become small, the drive current can be eliminated before the drive current sharply rises. As a result, sharp dropping of the drive current can be prevented. This allows variation in rotational torque of a motor to be suppressed, and thus reduces vibrational noise in the motor.
摘要翻译：在电动机中，驱动晶体管（7,9）在与激励驱动线圈（1,2）的相位切换点相邻的点处从由控制电路（10）输出的驱动信号I，J截止，因此没有驱动电流流过驱动线圈（1,2）。由于驱动线圈（1,2）的反电动势变小，因此可以在驱动电流急剧上升之前消除驱动电流。结果，可以防止驱动电流的急剧下降。这允许抑制电动机的转矩的变化，从而降低电动机的振动噪声。

2. 发明授权

US6157151A Motor drive circuit 有权
标题翻译：电机驱动电路
公开(公告)号：US6157151A
公开(公告)日：2000-12-05
申请号：US363621
申请日：1999-07-29
申请人： Tetsuya Yoshitomi , Takashi Someya
发明人： Tetsuya Yoshitomi , Takashi Someya
IPC分类号： H02P6/10 , H02P6/14 , H02P7/06
CPC分类号： H02P6/10 , H02P6/14 , H02P2209/07 , Y02P80/116
摘要： A full wave signal E is compared with a trapezoidal wave signal G in a comparator to output a second comparison signal H. The full wave signal E is obtained through full wave conversion applied to a sine wave signal of a Hall element. The trapezoidal wave signal G is obtained by sampling and holding an attenuated signal F, obtained by attenuating the full wave signal E, at a trailing end of a first comparison signal D, and nulling the attenuated signal F at a subsequent leading end thereof. Then, the first and second comparison signals D, H are added up in an OR circuit to output an addition signal K, so that no drive current IL flows through the driving coils at a point near the former and latter halves of a phase changeover point. Near the former half of a phase changeover a point, the drive current IL is nulled before counter electromotive force Ec becomes small, enabling motor noise reduction. Near the latter half of a phase changeover point, the drive current IL remains zero, continuously from the former half, preventing a drop of efficiency in driving a motor. Since a trapezoidal wave signal G is made from the attenuated signal F, a period with the drive current IL being zero is always ensured near the former half of a phase changeover point.
摘要翻译：将全波信号E与比较器中的梯形波信号G进行比较，以输出第二比较信号H.全波信号E通过施加到霍尔元件的正弦波信号的全波变换获得。梯形波信号G是通过对在第一比较信号D的尾端衰减全波信号E而获得的衰减信号F进行采样和保持而得到的，并在其后一个前端对衰减信号F进行归零。然后，将第一和第二比较信号D，H相加在OR电路中以输出相加信号K，使得驱动线圈在相邻切换点。在前一半相位切换点附近，反电动势Ec变小之前，驱动电流IL为零，能够降低电机噪音。在相转变点的后半部分附近，驱动电流IL从前半部分连续保持为零，从而防止驱动电动机的效率下降。由于衰减信号F产生梯形波信号G，因此在相转变点的前半部附近始终确保驱动电流IL为零的周期。

3. 发明授权

US5969338A Light-received position detecting circuit and distance detecting apparatus using the same 失效
标题翻译：光接收位置检测电路及其使用的距离检测装置
公开(公告)号：US5969338A
公开(公告)日：1999-10-19
申请号：US40339
申请日：1998-03-18
申请人： Tetsuya Yoshitomi , Takashi Someya , Akira Ito
发明人： Tetsuya Yoshitomi , Takashi Someya , Akira Ito
IPC分类号： G01S17/46 , G01V8/20 , H01L31/02 , G01V9/04
CPC分类号： G01S17/48 , G01V8/20 , H01L31/02024
摘要： A light-received position detecting circuit includes a light receiving portion 10 formed by plural photodiodes arranged side by side for detecting light to generate a photoelectric current, and a resistor group RR formed by plural resistors RR1 to RRn-1 connected in series and the photodiodes are correspondingly connected to the respective resistors to divide the photoelectric current from a light emitting portion 31 into photoelectric current parts according to the position of generation of the photoelectric current. First and second current detecting amplifiers 12 and 16 for generating detection signals corresponding to the photoelectric current parts are connected to the opposite ends of the resistor group RR, respectively. A third current detecting amplifier 14 for dividing the light receiving portion 10 into light receiving sections and detecting the photoelectric current part is connected to selected one of the resistors located in the intermediate portion of the resistor group RR. The operation of the amplifier 14 is changed over selectively by a switch 18.
摘要翻译：光接收位置检测电路包括：由并排布置的多个光电二极管形成的光接收部分10，用于检测光以产生光电流;以及由串联连接的多个电阻器RR1至RRn-1形成的电阻器组RR，以及光电二极管相应地连接到相应的电阻器，以根据光电流的产生位置将光电流从光发射部分31分成光电流部分。用于产生与光电流部分对应的检测信号的第一和第二电流检测放大器12和16分别连接到电阻器组RR的相对端。用于将光接收部分10分成光接收部分并检测光电电流部分的第三电流检测放大器14连接到位于电阻器组RR的中间部分中的所选电阻之一。放大器14的操作由开关18选择性地改变。

4. 发明申请

US20080185987A1 Integrated Circuit For Driving Motor 有权
标题翻译：驱动电机集成电路
公开(公告)号：US20080185987A1
公开(公告)日：2008-08-07
申请号：US12023948
申请日：2008-01-31
申请人： Hiroaki Kawakami , Takashi Someya , Tetsuya Yoshitomi
发明人： Hiroaki Kawakami , Takashi Someya , Tetsuya Yoshitomi
IPC分类号： H02P27/08
CPC分类号： H02P27/08
摘要： A motor driving integrated circuit for controlling motor driving, comprising: a data signal input terminal; a data signal receiving circuit configured to receive a data signal inputted from the data signal input terminal; a control circuit configured to control the motor driving integrated circuit based on a first data received through the data signal receiving circuit; and a pulse generating circuit configured to generate a pulse signal for PWM (Pulse Width Modulation)—controlling a motor coil based on a second data signal received through the data signal receiving circuit, the pulse generating circuit including: a rectangular signal generating circuit configured to generate a plurality of rectangular signals different in pulse width; and a synthesizing circuit configured to synthesize the plurality of rectangular signals outputted from the rectangular signal generating circuit to generate the pulse signal with a duty ratio corresponding to the second data signal.
摘要翻译：一种用于控制电动机驱动的电动机驱动集成电路，包括：数据信号输入端; 数据信号接收电路，被配置为接收从数据信号输入端输入的数据信号; 控制电路，被配置为基于通过数据信号接收电路接收的第一数据来控制电动机驱动集成电路; 以及脉冲发生电路，被配置为基于通过数据信号接收电路接收的第二数据信号产生用于PWM（脉宽调制）的脉冲信号控制电动机线圈，所述脉冲发生电路包括：矩形信号生成电路，被配置为产生脉冲宽度不同的多个矩形信号; 以及合成电路，被配置为合成从矩形信号发生电路输出的多个矩形信号，以产生与第二数据信号对应的占空比的脉冲信号。

5. 发明授权

US07755320B2 Integrated circuit for driving motor 有权
标题翻译：驱动电机的集成电路
公开(公告)号：US07755320B2
公开(公告)日：2010-07-13
申请号：US12023948
申请日：2008-01-31
申请人： Hiroaki Kawakami , Takashi Someya , Tetsuya Yoshitomi
发明人： Hiroaki Kawakami , Takashi Someya , Tetsuya Yoshitomi
IPC分类号： H02P27/08
CPC分类号： H02P27/08
摘要： A motor driving integrated circuit includes a data receiving circuit, a control circuit, and a pulse generating circuit. The data signal receiving circuit receives data signals inputted via a data signal input terminal. The control circuit controls the motor driving integrated circuit based on a first data signal received through the data signal receiving circuit. The pulse generating circuit generates a pulse signal for PWM (Pulse Width Modulation)—controlling a motor coil based on a second data signal received through the data signal receiving circuit. The pulse generating circuit includes a rectangular signal generating circuit configured to generate a plurality of rectangular signals different in pulse width, and a synthesizing circuit configured to synthesize the plurality of rectangular signals outputted from the rectangular signal generating circuit to generate the pulse signal with a duty ratio corresponding to the second data signal.
摘要翻译：电机驱动集成电路包括数据接收电路，控制电路和脉冲发生电路。数据信号接收电路接收通过数据信号输入端子输入的数据信号。控制电路基于通过数据信号接收电路接收的第一数据信号来控制电机驱动集成电路。脉冲发生电路基于通过数据信号接收电路接收的第二数据信号，产生用于PWM（脉宽调制）的脉冲信号 - 控制电动机线圈。脉冲发生电路包括：矩形信号发生电路，被配置为产生脉冲宽度不同的多个矩形信号;以及合成电路，被配置为合成从矩形信号发生电路输出的多个矩形信号，以产生占空比的脉冲信号比率对应于第二数据信号。

6. 发明申请

US20120068605A1 Motor Drive Circuit and Illumination Apparatus 有权
标题翻译：电动机驱动电路和照明装置
公开(公告)号：US20120068605A1
公开(公告)日：2012-03-22
申请号：US13070348
申请日：2011-03-23
申请人： Tetsuya Yoshitomi , Masashi Tanabe , Syunji Suzuki
发明人： Tetsuya Yoshitomi , Masashi Tanabe , Syunji Suzuki
IPC分类号： H01J7/24 , H02P7/29 , H02P6/22
CPC分类号： H02P6/22 , H02P6/30
摘要： A motor-drive circuit includes: an output transistor configured to supply a drive current to a motor for a cooling fan; a switching-control circuit configured to control switching of the output transistor so that the motor rotates in a first direction, or rotates in a second direction opposite to the first direction; and a switching circuit configured to, when a first time has elapsed since start of rotation of the motor in the first direction, cause the switching-control circuit to start switching control so that the motor stops rotating in the first direction and thereafter rotates in the second direction, and configured to, when a second time has elapsed since start of rotation of the motor in the second direction, cause the switching-control circuit to start switching control so that the motor stops rotating in the second direction and thereafter rotates in the first direction.
摘要翻译：电动机驱动电路包括：输出晶体管，被配置为向用于冷却风扇的电动机提供驱动电流; 开关控制电路，被配置为控制所述输出晶体管的开关，使得所述电动机沿第一方向旋转，或者沿与所述第一方向相反的第二方向旋转; 以及开关电路，其被配置为当从所述电动机沿所述第一方向旋转开始经过第一次时，使所述开关控制电路开始切换控制，使得所述电动机在所述第一方向上停止旋转，然后在所述第一方向上旋转第二方向，并且被配置为当从第二方向的电动机的旋转开始经过第二次时，使开关控制电路开始切换控制，使得电动机在第二方向上停止旋转，然后在第一个方向

7. 发明授权

US07288914B2 Drive wave generation circuit 有权
标题翻译：驱动波发生电路
公开(公告)号：US07288914B2
公开(公告)日：2007-10-30
申请号：US11433751
申请日：2006-05-12
申请人： Tetsuya Yoshitomi , Noriaki Okada , Takaaki Ishii , Yasuyuki Ueshima , Akira Suzuki
发明人： Tetsuya Yoshitomi , Noriaki Okada , Takaaki Ishii , Yasuyuki Ueshima , Akira Suzuki
IPC分类号： H02N2/02
CPC分类号： H02N2/067 , H02N2/025
摘要： Two standard waves from a standard waveform generation circuit are output via an output gate while being interchanged by a direction selector. The switching operation of the direction selector is controlled by a direction control signal M/I. 200 cycles of the standard waveforms are counted up by a 200-cycle counter. A drive counter is downcounted every 200 cycles, while the drive counter is upcounted in accordance with the number of drive pulses DRIVE. When the count value of the drive counter becomes zero, output from the output gate is thereby stopped. At the time of startup, outputs from the 200-cycle counter are counted so as to output a drive wave in a predetermined number in a predetermined direction.
摘要翻译：来自标准波形发生电路的两个标准波通过输出门输出，同时由方向选择器互换。方向选择器的切换操作由方向控制信号M / I控制。 200个周期的标准波形由200个周期的计数器计数。驱动器计数器每200个周期进行计数，而驱动计数器根据驱动脉冲DRIVE的数量进行计数。当驱动计数器的计数值变为零时，从输出门输出停止。在启动时，对200周期计数器的输出进行计数，以在预定方向上输出预定数量的驱动波。

8. 发明授权

US06943517B2 Single phase motor driving circuit and single phase motor driving method 失效
标题翻译：单相电机驱动电路和单相电机驱动方式
公开(公告)号：US06943517B2
公开(公告)日：2005-09-13
申请号：US10699443
申请日：2003-10-30
申请人： Tetsuya Yoshitomi , Yasuyuki Ueshima
发明人： Tetsuya Yoshitomi , Yasuyuki Ueshima
IPC分类号： H02P6/08 , H02P6/20 , H02P8/36 , H02P25/04 , H02P27/06 , H02P27/08 , G05B5/00
CPC分类号： H02P8/36 , Y10S388/934
摘要： A single-phase motor driving circuit includes a controller for outputting a control signal to drive a single-phase motor in a period in which a saw-tooth voltage of a predetermined cycle is larger than a duty setting voltage based on a result of comparing a detected temperature voltage changed based on a temperature detected by a temperature detecting device with a starting duty setting voltage increased with time while a voltage smaller than the detected temperature voltage at the time of starting the single-phase motor is set as an initial value. The controller sets the duty setting voltage as the starting duty setting voltage when the result of the comparison shows that the starting duty setting voltage is smaller than the detected temperature voltage, and the duty setting voltage as the detected temperature voltage when the starting duty setting voltage is larger than the detected temperature voltage.
摘要翻译：单相电动机驱动电路包括：控制器，用于在预定周期的锯齿电压大于占空比设定电压的期间输出用于驱动单相电动机的控制信号，所述周期基于比较结果检测温度电压根据由温度检测装置检测出的温度而变化，其中启动负载设定电压随着时间而增加，而小于检测到的启动单相电动机时的温度电压的电压被设定为初始值。当比较结果表明启动占空比设定电压小于检测到的温度电压时，控制器将占空比设定电压设置为起始占空比设定电压，并且当起动占空比设定电压大于检测到的温度电压。

9. 发明授权

US07589485B2 Motor control circuit, fan motor, electronic device, and notebook personal computer 有权
标题翻译：电机控制电路，风扇电机，电子设备和笔记本个人电脑
公开(公告)号：US07589485B2
公开(公告)日：2009-09-15
申请号：US12254731
申请日：2008-10-20
申请人： Tetsuya Yoshitomi , Joji Noie , Toshiyuki Imai
发明人： Tetsuya Yoshitomi , Joji Noie , Toshiyuki Imai
IPC分类号： H02K29/12
CPC分类号： H02P6/16 , H02P6/08 , Y02P80/116
摘要： A motor control circuit comprising: a rotation control circuit configured to control rotation of a motor based on a rotation control signal for controlling rotation of the motor and a rotational position detection signal from a Hall element for detecting a rotational position of the motor; a determining circuit configured to determine whether the rotation control signal has been generated for a predetermined time period; and a Hall element control circuit configured to apply a Hall element source voltage to the Hall element when the determining circuit determines that the rotation control signal has been generated for the predetermined time period, and to stop applying the Hall element source voltage to the Hall element when the determining circuit determines that the rotation control signal has not necessarily been generated for the predetermined time period.
摘要翻译：一种电动机控制电路，包括：旋转控制电路，被配置为基于用于控制所述电动机的旋转的旋转控制信号和来自用于检测所述电动机的旋转位置的霍尔元件的旋转位置检测信号来控制电动机的旋转; 确定电路，被配置为确定所述旋转控制信号是否已经生成了预定时间段; 以及霍尔元件控制电路，其被配置为当所述确定电路确定所述旋转控制信号已经产生预定时间段时将霍尔元件源电压施加到所述霍尔元件，并且停止将所述霍尔元件源电压施加到所述霍尔元件当确定电路确定在预定时间段内不一定产生旋转控制信号时。

10. 发明授权

US07148643B2 Driving a single-phase motor 有权
标题翻译：驱动单相电机
公开(公告)号：US07148643B2
公开(公告)日：2006-12-12
申请号：US11202048
申请日：2005-08-09
申请人： Tetsuya Yoshitomi , Yasuyuki Ueshima
发明人： Tetsuya Yoshitomi , Yasuyuki Ueshima
IPC分类号： G05B5/00
CPC分类号： H02P8/36 , Y10S388/934
摘要： A single-phase motor driving circuit includes a controller for outputting a control signal to drive a single-phase motor in a period in which a saw-tooth voltage of a predetermined cycle is larger than a duty setting voltage based on a result of comparing a detected temperature voltage changed based on a temperature detected by a temperature detecting device with a starting duty setting voltage increased with time while a voltage smaller than the detected temperature voltage at the time of starting the single-phase motor is set as an initial value. The controller sets the duty setting voltage as the starting duty setting voltage when the result of the comparison shows that the starting duty setting voltage is smaller than the detected temperature voltage, and the duty setting voltage as the detected temperature voltage when the starting duty setting voltage is larger than the detected temperature voltage.
摘要翻译：单相电动机驱动电路包括：控制器，用于在预定周期的锯齿电压大于占空比设定电压的期间输出用于驱动单相电动机的控制信号，所述周期基于比较结果检测温度电压根据由温度检测装置检测出的温度而变化，其中启动负载设定电压随着时间而增加，而小于检测到的启动单相电动机时的温度电压的电压被设定为初始值。当比较结果表明启动占空比设定电压小于检测到的温度电压时，控制器将占空比设定电压设置为起始占空比设定电压，并且当起动占空比设定电压大于检测到的温度电压。

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