公开(公告)号：US20100188036A1

公开(公告)日：2010-07-29

申请号：US12695555

申请日：2010-01-28

申请人： Kosaku Hioki ,  Kazumasa Takai ,  Takeshi Naganuma ,  Yoshihiro Niwa

发明人： Kosaku Hioki ,  Kazumasa Takai ,  Takeshi Naganuma ,  Yoshihiro Niwa

IPC分类号： G05B19/40

CPC分类号： H02P6/182 ,  G05B19/40 ,  H02P6/18 ,  H02P6/188 ,  H02P8/04 ,  H02P8/12 ,  H02P8/16

摘要： An amount of a motor drive current is controlled to an appropriate value. Two coils are provided, and a rotor is rotated by the coils by setting different phases for the supplied currents to the two coils. During a phase where one of the coils is in a high-impedance state, an induced voltage generated in the coil is detected. According to the state of the induced voltage, an output control circuit controls the amounts of the motor drive currents supplied to the two coils.

摘要翻译： 电动机驱动电流的量被控制到适当的值。 提供两个线圈，并且通过将供给的电流设定为两个线圈的不同相位，使线圈旋转转子。 在其中一个线圈处于高阻抗状态的相位中，检测线圈中产生的感应电压。 根据感应电压的状态，输出控制电路控制提供给两个线圈的电动机驱动电流的量。

公开(公告)号：US08604744B2

公开(公告)日：2013-12-10

申请号：US12978958

申请日：2010-12-27

申请人： Kazumasa Takai ,  Takeshi Naganuma ,  Kosaku Hioki ,  Yoshihiro Niwa

发明人： Kazumasa Takai ,  Takeshi Naganuma ,  Kosaku Hioki ,  Yoshihiro Niwa

IPC分类号： G05B19/40

CPC分类号： H02P8/36 ,  H02P8/22

摘要： When a driver unit is in a high impedance state as viewed from a first coil or a second coil, an induced voltage detector detects the voltage across the first coil or that across the second coil so as to detect an induced voltage occurring in the first coil or the second coil. The induced voltage detector includes a differential amplifier circuit for differentially amplifying an electric potential across the first coil or that across the second coil, and an analog-to-digital converter circuit for converting an analog value outputted from the differential amplifier circuit into a digital value and outputting the converted digital value to a control unit. The control unit generates a drive signal based on an input signal set externally and adjusts the drive signal in accordance with the induced voltage detected by the induced voltage detector so as to set the adjusted drive signal in the driver unit.

摘要翻译： 当驱动器单元处于从第一线圈或第二线圈观察到的高阻抗状态时，感应电压检测器检测跨越第一线圈或跨越第二线圈的电压，以便检测在第一线圈中产生的感应电压 或第二线圈。 感应电压检测器包括用于差分放大跨越第一线圈或跨越第二线圈的电位的差分放大器电路和用于将从差分放大器电路输出的模拟值转换为数字值的模数转换器电路 并将转换的数字值输出到控制单元。 控制单元根据从外部设定的输入信号生成驱动信号，根据感应电压检测器检测出的感应电压来调整驱动信号，将驱动单元的调整后的驱动信号设定。

公开(公告)号：US08497653B2

公开(公告)日：2013-07-30

申请号：US12695555

申请日：2010-01-28

申请人： Kosaku Hioki ,  Kazumasa Takai ,  Takeshi Naganuma ,  Yoshihiro Niwa

发明人： Kosaku Hioki ,  Kazumasa Takai ,  Takeshi Naganuma ,  Yoshihiro Niwa

IPC分类号： G05B19/40

CPC分类号： H02P6/182 ,  G05B19/40 ,  H02P6/18 ,  H02P6/188 ,  H02P8/04 ,  H02P8/12 ,  H02P8/16

摘要： An amount of a motor drive current is controlled to an appropriate value. Two coils are provided, and a rotor is rotated by the coils by setting different phases for the supplied currents to the two coils. During a phase where one of the coils is in a high-impedance state, an induced voltage generated in the coil is detected. According to the state of the induced voltage, an output control circuit controls the amounts of the motor drive currents supplied to the two coils.

摘要翻译： 电动机驱动电流的量被控制到适当的值。 提供两个线圈，并且通过将供给的电流设定为两个线圈的不同相位，使线圈旋转转子。 在其中一个线圈处于高阻抗状态的相位中，检测线圈中产生的感应电压。 根据感应电压的状态，输出控制电路控制提供给两个线圈的电动机驱动电流的量。

公开(公告)号：US20110156631A1

公开(公告)日：2011-06-30

申请号：US12978958

申请日：2010-12-27

申请人： Kazumasa TAKAI ,  Takeshi Naganuma ,  Kosaku Hioki ,  Yoshihiro Niwa

发明人： Kazumasa TAKAI ,  Takeshi Naganuma ,  Kosaku Hioki ,  Yoshihiro Niwa

IPC分类号： H02P8/12 ,  H02P6/08

CPC分类号： H02P8/36 ,  H02P8/22

摘要： When a driver unit is in a high impedance state as viewed from a first coil or a second coil, an induced voltage detector detects the voltage across the first coil or that across the second coil so as to detect an induced voltage occurring in the first coil or the second coil. The induced voltage detector includes a differential amplifier circuit for differentially amplifying an electric potential across the first coil or that across the second coil, and an analog-to-digital converter circuit for converting an analog value outputted from the differential amplifier circuit into a digital value and outputting the converted digital value to a control unit. The control unit generates a drive signal based on an input signal set externally and adjusts the drive signal in accordance with the induced voltage detected by the induced voltage detector so as to set the adjusted drive signal in the driver unit.

摘要翻译： 当驱动器单元处于从第一线圈或第二线圈观察到的高阻抗状态时，感应电压检测器检测跨越第一线圈或跨越第二线圈的电压，以便检测在第一线圈中产生的感应电压 或第二线圈。 感应电压检测器包括用于差分放大跨越第一线圈或跨越第二线圈的电位的差分放大器电路和用于将从差分放大器电路输出的模拟值转换为数字值的模数转换器电路 并将转换的数字值输出到控制单元。 控制单元根据从外部设定的输入信号生成驱动信号，根据感应电压检测器检测出的感应电压来调整驱动信号，将驱动单元的调整后的驱动信号设定。

公开(公告)号：US08508175B2

公开(公告)日：2013-08-13

申请号：US12883739

申请日：2010-09-16

申请人： Kosaku Hioki

发明人： Kosaku Hioki

IPC分类号： G05B19/00 ,  G05B11/00

CPC分类号： H02P8/12 ,  H02P6/187 ,  H02P8/16 ,  H02P8/34

摘要： A stepping motor includes two coils. A driver circuit drives the stepping motor by setting dissimilar phases of supply currents to these two coils. One terminal of one coil is connected to ground and another terminal is set to a high impedance state, and an induced voltage generated at that coil is detected as a voltage with respect to ground. Then, in accordance with the state of the detected induced voltage, the magnitude of motor drive current supplied to the two coils is controlled.

摘要翻译： 步进电机包括两个线圈。 驱动电路通过将不同的电源电流设置到这两个线圈来驱动步进电机。 一个线圈的一个端子连接到地，另一个端子被设置为高阻抗状态，并且在该线圈处产生的感应电压被检测为相对于地的电压。 然后，根据检测出的感应电压的状态，控制提供给两个线圈的电动机驱动电流的大小。

公开(公告)号：US20080238833A1

公开(公告)日：2008-10-02

申请号：US12057802

申请日：2008-03-28

申请人： Kosaku Hioki ,  Takashi Ogawa

发明人： Kosaku Hioki ,  Takashi Ogawa

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/3291 ,  G09G2300/0842 ,  G09G2310/027 ,  G09G2320/0285 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/0673 ,  G09G2320/0693

摘要： An inspection display signal is supplied to a pixel to be inspected so that a light emitting element operates, and a current flowing through the light emitting element is detected. An element current detection signal having a number of bits which is less than a number of bits of a display data signal generated to be supplied to each pixel based on a video signal is stored in a memory according to a characteristic such as a change range and precision of the obtained element current and is used for variation correction. For example, only bit positions in which a value may change are stored in consideration of the change allowance range of the ON-current detection signal, so that a storage capacity to the memory is reduced without affecting correction precision of variation.

摘要翻译： 将检查显示信号提供给要检查的像素，使得发光元件工作，并且检测流过发光元件的电流。 具有比基于视频信号提供给每个像素的生成的显示数据信号的位的数量少的元件电流检测信号根据诸如变化范围的特性存储在存储器中，并且 获得的元件电流的精度用于变化校正。 例如，考虑到导通电流检测信号的变化允许范围，仅存储值可能改变的位位置，从而降低了对存储器的存储容量，而不会影响变化的校正精度。

公开(公告)号：US07310057B2

公开(公告)日：2007-12-18

申请号：US11233459

申请日：2005-09-22

申请人： Tsutomu Murata ,  Kosaku Hioki

发明人： Tsutomu Murata ,  Kosaku Hioki

IPC分类号： H03M9/00

CPC分类号： H03M9/00

摘要： A serial-parallel conversion circuit in which power consumption is reduced is provided by using a latch clock generation circuit including multiple latch signal generation circuits which outputs a latch signal with a period of an integer multiple of that of a system clock signal. Here, the latch signal generation circuit includes a gate circuit which receives a control signal and a feedback signal, and outputs, according to a combination of the received control signal and feedback signal, a latch signal obtained by inverting a pulse corresponding to one clock of the system clock signal, and an output synchronization circuit which holds the latch signal output from the gate circuit and at the same time outputs the latch signal as a control signal supplied to a gate circuit of a latch signal generation circuit of the succeeding stage and a feedback signal supplied to the gate circuit of the self stage.

摘要翻译： 通过使用包括多个锁存信号产生电路的锁存时钟产生电路来提供消耗功率降低的串并转换电路，其以系统时钟信号的整数倍的周期输出锁存信号。 这里，锁存信号生成电路包括接收控制信号和反馈信号的门电路，根据接收到的控制信号和反馈信号的组合，输出通过将对应于一个时钟的脉冲反转的锁存信号 系统时钟信号和输出同步电路，其保持从门电路输出的锁存信号，同时输出锁存信号作为提供给后级的锁存信号发生电路的门电路的控制信号，以及 反馈信号提供给自身级的门电路。

公开(公告)号：US20060066356A1

公开(公告)日：2006-03-30

申请号：US11233459

申请日：2005-09-22

申请人： Tsutomu Murata ,  Kosaku Hioki

发明人： Tsutomu Murata ,  Kosaku Hioki

IPC分类号： H03K19/00

CPC分类号： H03M9/00

摘要： A serial-parallel conversion circuit in which power consumption is reduced is provided by using a latch clock generation circuit including multiple latch signal generation circuits which outputs a latch signal with a period of an integer multiple of that of a system clock signal. Here, the latch signal generation circuit includes a gate circuit which receives a control signal and a feedback signal, and outputs, according to a combination of the received control signal and feedback signal, a latch signal obtained by inverting a pulse corresponding to one clock of the system clock signal, and an output synchronization circuit which holds the latch signal output from the gate circuit and at the same time outputs the latch signal as a control signal supplied to a gate circuit of a latch signal generation circuit of the succeeding stage and a feedback signal supplied to the gate circuit of the self stage.

摘要翻译： 通过使用包括多个锁存信号产生电路的锁存时钟产生电路来提供消耗功率降低的串并转换电路，其以系统时钟信号的整数倍的周期输出锁存信号。 这里，锁存信号生成电路包括接收控制信号和反馈信号的门电路，根据接收到的控制信号和反馈信号的组合，输出通过将对应于一个时钟的脉冲反转的锁存信号 系统时钟信号和输出同步电路，其保持从门电路输出的锁存信号，同时输出锁存信号作为提供给后级的锁存信号发生电路的门电路的控制信号，以及 反馈信号提供给自身级的门电路。