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1. 发明授权

US07622873B2 Motor drive device and drive method 有权
标题翻译：电机驱动装置及驱动方式
公开(公告)号：US07622873B2
公开(公告)日：2009-11-24
申请号：US11548495
申请日：2006-10-11
申请人： Go Takata , Hideaki Mori , Yasunori Yamamoto
发明人： Go Takata , Hideaki Mori , Yasunori Yamamoto
IPC分类号： H02P29/04
CPC分类号： H02P6/182
摘要： A reverse current detection unit detects the direction of the motor current during the synchronous rectifier period based on the polarity of the on voltage of a switching device contained in the motor current path, and outputs a reverse current detection signal representing the result of this detection to the PWM control unit. Change in the output of the PWM control unit that generates the drive signal for a particular switching device in the drive unit is controlled based on the reverse current detection signal and the energizing pattern of the drive unit is changed when motor current is detected in the synchronous rectifier period to be flowing in the opposite direction as in the urging period. The flow of motor current to the power supply is thus reduced and a rise in the power supply voltage can be prevented.
摘要翻译：反向电流检测单元根据电动机电流路径中包含的开关装置的导通电压的极性，在同步整流时段内检测电动机电流的方向，并将表示该检测结果的反向电流检测信号输出到 PWM控制单元。基于反向电流检测信号来控制产生用于驱动单元中的特定开关装置的驱动信号的PWM控制单元的输出的变化，并且当在同步中检测到电动机电流时，驱动单元的通电模式被改变整流器周期在与施力期相反的方向上流动。电动机电流流向电源因此减少，并且可以防止电源电压的上升。

2. 发明授权

US07402975B2 Motor drive device and drive method 有权
标题翻译：电机驱动装置及驱动方式
公开(公告)号：US07402975B2
公开(公告)日：2008-07-22
申请号：US11548500
申请日：2006-10-11
申请人： Go Takata , Hideaki Mori , Yasunori Yamamoto
发明人： Go Takata , Hideaki Mori , Yasunori Yamamoto
IPC分类号： H02P1/24
CPC分类号： H02P27/08
摘要： A rise in the power supply voltage as a result of a sudden speed reducing command causing the motor current to flow to the power supply is prevented. The motor drive device has a drive signal generating unit for generating a drive signal by an energizing control unit, PWM control unit, and oscillation unit; a drive unit for producing drive power to drive the motor based on the drive signal; a torque control signal generating unit for generating a torque control signal specifying the motor torque; a speed detection unit for detecting the rotational speed of the motor and generating a rotational speed signal denoting motor speed information; and a decision unit for generating a speed difference detection signal denoting the difference between the torque control signal and the rotational speed signal. The drive signal generating unit is controlled based on the speed difference detection signal.
摘要翻译：防止由于导致电动机电流流向电源的突然减速指令导致的电源电压的上升。电机驱动装置具有用于通过激励控制部，PWM控制部和振荡部产生驱动信号的驱动信号生成部，驱动单元，用于基于所述驱动信号产生用于驱动所述马达的驱动力; 转矩控制信号发生单元，用于产生指定电动机转矩的转矩控制信号; 速度检测单元，用于检测电动机的转速并产生表示电动机速度信息的转速信号; 以及判定单元，用于生成表示转矩控制信号和转速信号之间的差的速度差检测信号。基于速度差检测信号来控制驱动信号生成部。

3. 发明授权

US08913363B2 Overcurrent protection circuit and overcurrent protection method 有权
标题翻译：过流保护电路及过流保护方式
公开(公告)号：US08913363B2
公开(公告)日：2014-12-16
申请号：US13117606
申请日：2011-05-27
申请人： Go Takata , Yasunori Yamamoto
发明人： Go Takata , Yasunori Yamamoto
IPC分类号： H02H9/00 , G05F1/40 , H02M1/32 , H02M3/156 , H02M1/00
CPC分类号： H02M3/156 , H02M1/32 , H02M2001/0009
摘要： An overcurrent protection circuit includes: a determiner configured to determine whether or not the switch current exceeds a predetermined threshold, that is, the switch current is an overcurrent state when the switching element is turned ON; an OFF period setting counter configured to increase or decrease a counter output depending on a determination result of the determiner; and a drive signal generator configured to generate a drive signal of the switching element such that a length of an ON timing interval of the switching element corresponds to the counter output of the OFF period setting counter.
摘要翻译：过电流保护电路包括：确定器，被配置为确定开关电流是否超过预定阈值，即开关电流是开关元件接通时的过电流状态; 关闭周期设定计数器，被配置为根据所述确定器的确定结果增加或减少计数器输出; 以及驱动信号发生器，被配置为产生所述开关元件的驱动信号，使得所述开关元件的导通定时间隔的长度对应于所述断开周期设定计数器的计数器输出。

4. 发明授权

US08159140B2 Load driving apparatus 有权
标题翻译：负载驱动装置
公开(公告)号：US08159140B2
公开(公告)日：2012-04-17
申请号：US12553361
申请日：2009-09-03
申请人： Go Takata , Shinichiro Kataoka , Yasunori Yamamoto , Tsukasa Kawahara , Ryuji Ueda , Daisuke Itou
发明人： Go Takata , Shinichiro Kataoka , Yasunori Yamamoto , Tsukasa Kawahara , Ryuji Ueda , Daisuke Itou
IPC分类号： H05B37/00
CPC分类号： H05B33/0815 , H05B33/0824
摘要： The load driving apparatus according to the present invention includes a load current setting signal generating section, a load current generating section, a reference voltage generating section and a drive voltage generating section. The load current setting signal generating section generates a desired load current setting signal. The load current generating section generates a load current based on the load current setting signal to drive the load. The reference voltage generating section generates a reference voltage based on the load current setting signal. The drive voltage generating section generates a drive voltage, supplies the drive voltage to the load, generates a between-both-terminals voltage between both terminals of the load current generating section based on the drive voltage and controls the drive voltage so that the difference between the between-both-terminals voltage and the reference voltage becomes small.
摘要翻译：根据本发明的负载驱动装置包括负载电流设定信号生成部，负载电流产生部，基准电压生成部和驱动电压生成部。负载电流设定信号生成部生成期望的负载电流设定信号。负载电流产生部根据负载电流设定信号生成负载电流，驱动负载。参考电压产生部分基于负载电流设置信号产生参考电压。驱动电压产生部生成驱动电压，向驱动电压供给驱动电压，根据驱动电压在负载电流产生部的两端之间产生两端电压，并控制驱动电压，两端电压和参考电压变小。

5. 发明申请

US20100060177A1 LOAD DRIVING APPARATUS 有权
标题翻译：负载驱动装置
公开(公告)号：US20100060177A1
公开(公告)日：2010-03-11
申请号：US12553361
申请日：2009-09-03
申请人： Go TAKATA , Shinichiro Kataoka , Yasunori Yamamoto , Tsukasa Kawahara , Ryuji Ueda , Daisuke Itou
发明人： Go TAKATA , Shinichiro Kataoka , Yasunori Yamamoto , Tsukasa Kawahara , Ryuji Ueda , Daisuke Itou
IPC分类号： H05B37/02 , G05F1/00
CPC分类号： H05B33/0815 , H05B33/0824
摘要： The load driving apparatus according to the present invention includes a load current setting signal generating section, a load current generating section, a reference voltage generating section and a drive voltage generating section. The load current setting signal generating section generates a desired load current setting signal. The load current generating section generates a load current based on the load current setting signal to drive the load. The reference voltage generating section generates a reference voltage based on the load current setting signal. The drive voltage generating section generates a drive voltage, supplies the drive voltage to the load, generates a between-both-terminals voltage between both terminals of the load current generating section based on the drive voltage and controls the drive voltage so that the difference between the between-both-terminals voltage and the reference voltage becomes small.
摘要翻译：根据本发明的负载驱动装置包括负载电流设定信号生成部，负载电流产生部，基准电压生成部和驱动电压生成部。负载电流设定信号生成部生成期望的负载电流设定信号。负载电流产生部根据负载电流设定信号生成负载电流，驱动负载。参考电压产生部分基于负载电流设置信号产生参考电压。驱动电压产生部生成驱动电压，向驱动电压供给驱动电压，根据驱动电压在负载电流产生部的两端之间产生两端电压，并控制驱动电压，两端电压和参考电压变小。

6. 发明授权

US08878445B2 Light-emitting element driving device 有权
标题翻译：发光元件驱动装置
公开(公告)号：US08878445B2
公开(公告)日：2014-11-04
申请号：US13314597
申请日：2011-12-08
申请人： Go Takata , Shinichiro Kataoka , Yasunori Yamamoto , Tsukasa Kawahara , Ryuji Ueda , Daisuke Itou
发明人： Go Takata , Shinichiro Kataoka , Yasunori Yamamoto , Tsukasa Kawahara , Ryuji Ueda , Daisuke Itou
IPC分类号： G09G3/36 , H05B33/08
CPC分类号： H05B33/089 , G09G3/3406 , G09G2320/0233 , H05B33/0815 , H05B33/0827 , H05B33/083
摘要： Short circuit failures and open circuit failures of light-emitting elements used for the backlight in an LCD panel can be reliably and easily detected. The voltage at the node between each series-connected light-emitting element array and a drive circuit is detected as a monitored voltage. A maximum detector detects the highest and a minimum detector detects the lowest of these monitored voltages. Short circuit or open circuit failure of a light-emitting element is detected by comparing the voltage difference between the maximum detector output and the minimum detector output with a specific reference voltage.
摘要翻译：可以可靠且容易地检测用于LCD面板中的背光的发光元件的短路故障和开路故障。每个串联连接的发光元件阵列和驱动电路之间的节点处的电压被检测为监视电压。最大检测器检测到最高检测器，并且最小检测器检测到这些监控电压中的最低值。通过将最大检测器输出和最小检测器输出之间的电压差与特定参考电压进行比较来检测发光元件的短路或开路故障。

7. 发明申请

US20110080397A1 BACKLIGHT DRIVE APPARATUS AND VIDEO DISPLAY APPARATUS 审中-公开
标题翻译：背光驱动装置和视频显示装置
公开(公告)号：US20110080397A1
公开(公告)日：2011-04-07
申请号：US12821413
申请日：2010-06-23
申请人： Yasunori Yamamoto , Shinichiro Kataoka , Tsukasa Kawahara , Go Takata , Ryuji Ueda , Daisuke Itou
发明人： Yasunori Yamamoto , Shinichiro Kataoka , Tsukasa Kawahara , Go Takata , Ryuji Ueda , Daisuke Itou
IPC分类号： G09G5/00 , H05B37/02 , G09G3/36
CPC分类号： G09G3/342 , G09G3/006 , H05B33/0827 , H05B33/0893
摘要： A backlight drive apparatus for current driving a plurality of strings has a period in which at least one of the strings is a current driven idly during a liquid crystal OFF period, in addition to a current driving period in which video information is displayed via liquid crystals. A failure detection section can monitor stabilized detection voltages in the period when current driven idly and detects failure state of the backlight panel.
摘要翻译：用于电流驱动多个串的背光驱动装置除了通过液晶显示视频信息的当前驱动时段之外，还具有在液晶关闭期间串联中的至少一个是空载驱动的周期。故障检测部可以在电流驱动时检测到背光面板的故障状态的状态下监视稳定的检测电压。

8. 发明申请

US20120074856A1 LIGHT-EMITTING ELEMENT DRIVING DEVICE 有权
标题翻译：发光元件驱动装置
公开(公告)号：US20120074856A1
公开(公告)日：2012-03-29
申请号：US13314597
申请日：2011-12-08
申请人： Go TAKATA , Shinichiro Kataoka , Yasunori Yamamoto , Tsukasa Kawahara , Ryuji Ueda , Daisuke Itou
发明人： Go TAKATA , Shinichiro Kataoka , Yasunori Yamamoto , Tsukasa Kawahara , Ryuji Ueda , Daisuke Itou
IPC分类号： H05B37/03
CPC分类号： H05B33/089 , G09G3/3406 , G09G2320/0233 , H05B33/0815 , H05B33/0827 , H05B33/083
摘要： Short circuit failures and open circuit failures of light-emitting elements used for the backlight in an LCD panel can be reliably and easily detected. The voltage at the node between each series-connected light-emitting element array and a drive circuit is detected as a monitored voltage. A maximum detector detects the highest and a minimum detector detects the lowest of these monitored voltages. Short circuit or open circuit failure of a light-emitting element is detected by comparing the voltage difference between the maximum detector output and the minimum detector output with a specific reference voltage.
摘要翻译：可以可靠且容易地检测用于LCD面板中的背光的发光元件的短路故障和开路故障。每个串联连接的发光元件阵列和驱动电路之间的节点处的电压被检测为监视电压。最大检测器检测到最高检测器，并且最小检测器检测到这些监控电压中的最低值。通过将最大检测器输出和最小检测器输出之间的电压差与特定参考电压进行比较来检测发光元件的短路或开路故障。

9. 发明申请

US20060028161A1 Motor driving apparatus and motor driving method 有权
标题翻译：电机驱动装置及电机驱动方式
公开(公告)号：US20060028161A1
公开(公告)日：2006-02-09
申请号：US11191853
申请日：2005-07-27
申请人： Yasunori Yamamoto , Hideaki Mori , Shinichi Kuroshima , Hideki Nishino , Taishi Iwanaga
发明人： Yasunori Yamamoto , Hideaki Mori , Shinichi Kuroshima , Hideki Nishino , Taishi Iwanaga
IPC分类号： H02P7/00
CPC分类号： H02P6/10 , H02P6/18 , H02P2209/07
摘要： A motor driving apparatus has a driver circuit configuration capable of individually adjusting three phase coil currents. Coil current waveforms are formed to have a total of three phase shaft direction forces to be zero in compliance with predetermined mathematical expressions, and thus, three phase coil current profiles can be made independent of one another, and vibration-causing factors attributed to the fact that a certain phase is in an non-energized state are corrected by adjusting the current profiles of the other phases. Consequently, the vibration and the noise can be reduced.
摘要翻译：电动机驱动装置具有能够分别调节三相线圈电流的驱动电路结构。线圈电流波形形成为具有符合预定数学表达式的总共三相轴方向力为零，因此可以使三相线圈电流分布彼此独立，并且由于事实引起的振动引起因素通过调整其它相的电流曲线来校正某一相位处于非通电状态。因此，可以降低振动和噪音。

10. 发明授权

US08030877B2 Device and method for detecting back electromotive force phase and device and method for controlling excitation 有权
标题翻译：用于检测反电动势相的装置和方法以及用于控制激励的装置和方法
公开(公告)号：US08030877B2
公开(公告)日：2011-10-04
申请号：US12367855
申请日：2009-02-09
申请人： Daisuke Ito , Hideaki Mori , Yasunori Yamamoto
发明人： Daisuke Ito , Hideaki Mori , Yasunori Yamamoto
IPC分类号： G05B19/40
CPC分类号： H02P6/182
摘要： In a back electromotive force phase detecting device, a timing generating unit generates a timing signal indicating a start timing, an intermediate timing and an end timing of a 180-degree electrical angle period in a detection target phase, from an excitation pulse signal. A difference calculating unit receives the timing signal, and calculates a difference between a total PWM control period of the detection target phase during a first-half 90-degree period, and a total PWM control period of the detection target phase during a second-half 90-degree period. In an excitation control device, a control unit changes the capability of driving a motor based on an output of the back electromotive force phase detecting device.
摘要翻译：在反电动势相位检测装置中，定时生成单元从激励脉冲信号生成表示检测对象相位中的180度电角度周期的开始定时，中间定时和结束定时的定时信号。差分计算单元接收定时信号，并且计算在半个90度周期期间的检测目标相位的总PWM控制周期与下半期检测目标相位的总PWM控制周期之间的差 90度时期。在励磁控制装置中，控制单元根据反电动势相位检测装置的输出来改变驱动电动机的能力。

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