公开(公告)号：US08648557B2

公开(公告)日：2014-02-11

申请号：US13247050

申请日：2011-09-28

申请人： Takashi Ogawa ,  Takahisa Nakai ,  Tsutomu Murata

发明人： Takashi Ogawa ,  Takahisa Nakai ,  Tsutomu Murata

IPC分类号： H02K5/00

CPC分类号： H02P6/085 ,  H02P6/26

摘要： A drive control signal generating circuit that generates a drive control signal for driving a motor includes an output control circuit that includes a flip-flop in which a state changes by a rotational state signal of the motor crossing a reference value and generates a motor drive control signal according to the state of the flip-flop, a clock generating circuit that generates a clock that defines a time of reading data in the flip-flop of the output control circuit; and a PWM conversion circuit that PWM-converts the drive control signal using the clock as a PWM signal. The clock has a frequency in which the output control circuit operates and has a duty ratio of the PWM signal.

摘要翻译： 产生用于驱动电动机的驱动控制信号的驱动控制信号产生电路包括：输出控制电路，包括触发器，其中状态由电动机的旋转状态信号变化而与参考值相交，并产生电动机驱动控制 信号根据触发器的状态产生时钟产生电路，其生成定义在输出控制电路的触发器中读取数据的时间的时钟; 以及使用该时钟作为PWM信号对驱动控制信号进行PWM转换的PWM变换电路。 时钟具有输出控制电路工作的频率，并具有PWM信号的占空比。

公开(公告)号：US20120081049A1

公开(公告)日：2012-04-05

申请号：US13247050

申请日：2011-09-28

申请人： Takashi Ogawa ,  Takahisa Nakai ,  Tsutomu Murata

发明人： Takashi Ogawa ,  Takahisa Nakai ,  Tsutomu Murata

IPC分类号： H02P6/08

CPC分类号： H02P6/085 ,  H02P6/26

摘要： PWM conversion is efficiently executed. An output control circuit comprises a flip-flop which reads crossing of a reference value by a rotational state signal from a motor, and generates a motor drive control signal according to a state of the flip-flop. A clock generator generates a clock which defines a time of reading data in the flip-flop of the output control circuit. A PWM conversion circuit PWM-converts the drive control signal using the clock as a PWM signal.

摘要翻译： PWM转换有效执行。 输出控制电路包括触发器，其触发参考值与来自电动机的旋转状态信号的交叉，并根据触发器的状态生成电动机驱动控制信号。 时钟发生器产生定义在输出控制电路的触发器中读取数据的时间的时钟。 PWM转换电路使用时钟作为PWM信号对驱动控制信号进行PWM转换。

公开(公告)号：US08542166B2

公开(公告)日：2013-09-24

申请号：US11959663

申请日：2007-12-19

申请人： Tsutomu Murata ,  Takashi Ogawa

发明人： Tsutomu Murata ,  Takashi Ogawa

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2330/12

摘要： In performing a display in accordance with a video signal, a display signal for inspection is supplied to a pixel within a predetermined inspected row to operate an EL element therein and to thereby detect a current that flows through the EL element. The current detection data is stored in a volatile primary memory. In accordance with data obtained in this manner, a variation correcting section sequentially corrects data signals to be supplied to the respective pixel. At the time of turning on power, the variation correcting section performs the correction using the current detection data saved in a secondary memory. With this arrangement, it is possible to execute display variation correction from immediately after turning on power, and it is also possible to execute real-time correction.

摘要翻译： 在根据视频信号执行显示时，将用于检查的显示信号提供给预定行中的像素，以在其中操作EL元件，从而检测流经EL元件的电流。 当前检测数据存储在易失性主存储器中。 根据以这种方式获得的数据，变化校正部分顺序校正要提供给各个像素的数据信号。 在接通电源时，变化校正部分使用保存在辅助存储器中的当前检测数据进行校正。 通过这种布置，可以在打开电源之后立即执行显示变化校正，并且还可以执行实时校正。

公开(公告)号：US08283885B2

公开(公告)日：2012-10-09

申请号：US12821547

申请日：2010-06-23

申请人： Takashi Ogawa ,  Tsutomu Murata

发明人： Takashi Ogawa ,  Tsutomu Murata

IPC分类号： H02P5/40 ,  H02P7/00

CPC分类号： H02P8/34

摘要： A drive control signal is effectively obtained. An offset control circuit (32) adds an offset to a rotational state signal. An added signal is obtained by adding an offset to the rotational state signal by repeating a process in which, when it is detected that an added signal in which a predetermined offset amount is added to the rotational state signal on a side approaching a reference value becomes the reference value from one direction at a first time, the offset amount is added to the rotational state signal in a direction returning from the reference value, when it is detected that the obtained added signal becomes the reference value from the one direction at a second time, no value is added to the signal, and, when it is detected that the added signal becomes the reference value at a first time from another direction which is a direction opposite to the one direction and which reaches the reference value, the offset amount is added to the rotational state signal on a side approaching the reference value. A drive control signal is generated in which the level is reduced compared to the sine wave shape signal for a predetermined period of the obtained added signal between the reference value at the second time and a reference value at a next time.

摘要翻译： 有效地获得驱动控制信号。 偏移控制电路（32）将偏移量加到旋转状态信号上。 通过重复一个处理来获得附加的信号，该处理是当检测到在接近参考值的一侧将与旋转状态信号相加的预定偏移量的附加信号变为 从第一次的一个方向的参考值，当从所述参考值返回的方向上将所述偏移量加到所述旋转状态信号中，当检测到所获得的相加信号在一秒钟内从所述一个方向变为参考值时 时间，不向信号添加值，并且当检测到相加信号在第一时间从作为与该一个方向相反的方向的另一方向成为参考值并且达到参考值时，偏移量 被添加到接近参考值的一侧的旋转状态信号。 产生驱动控制信号，其中在所获得的相加信号的预定时间段的第二时间的参考值和下一个参考值之间，与正弦波形状信号相比，电平被减小。

公开(公告)号：US08476850B2

公开(公告)日：2013-07-02

申请号：US13239554

申请日：2011-09-22

申请人： Takashi Ogawa ,  Tsutomu Murata

发明人： Takashi Ogawa ,  Tsutomu Murata

IPC分类号： H02P6/06

CPC分类号： H02P6/16

摘要： A drive control signal is effectively obtained. An offset is added to a rotational state signal. A drive control signal having a period which is reduced by a predetermined period compared to the sine wave form signal is generated between a crossing of a reference value for a second time and a crossing of the reference value for a next time by an added signal obtained by sequentially offsetting the rotational state signal in a direction reaching the reference value. A pulse indicating that the polarity has been reversed when the offset is added is added to the crossing of the reference value for the first time, to reliably detect crossing of the reference value for the second time.

摘要翻译： 有效地获得驱动控制信号。 向旋转状态信号添加偏移。 具有与正弦波形信号相比减小预定周期的周期的驱动控制信号在第二次参考值与下一次的参考值与所获得的相加信号的交叉之间产生 通过在到达参考值的方向上顺序地偏移旋转状态信号。 当偏移量相加时，指示极性反转的脉冲被添加到第一次参考值的交叉点，以可靠地检测第二次参考值的交叉。

公开(公告)号：US20120074880A1

公开(公告)日：2012-03-29

申请号：US13239554

申请日：2011-09-22

申请人： Takashi Ogawa ,  Tsutomu Murata

发明人： Takashi Ogawa ,  Tsutomu Murata

IPC分类号： H02P6/16

CPC分类号： H02P6/16

摘要： A drive control signal is effectively obtained. An offset is added to a rotational state signal. A drive control signal having a period which is reduced by a predetermined period compared to the sine wave form signal is generated between a crossing of a reference value for a second time and a crossing of the reference value for a next time by an added signal obtained by sequentially offsetting the rotational state signal in a direction reaching the reference value. A pulse indicating that the polarity has been reversed when the offset is added is added to the crossing of the reference value for the first time, to reliably detect crossing of the reference value for the second time.

摘要翻译： 有效地获得驱动控制信号。 向旋转状态信号添加偏移。 具有与正弦波形信号相比减小预定周期的周期的驱动控制信号在第二次参考值与下一次的参考值与所获得的相加信号的交叉之间产生 通过在到达参考值的方向上顺序地偏移旋转状态信号。 当偏移量相加时，指示极性反转的脉冲被添加到第一次参考值的交叉点，以可靠地检测第二次参考值的交叉。

公开(公告)号：US20080303754A1

公开(公告)日：2008-12-11

申请号：US11959663

申请日：2007-12-19

申请人： Tsutomu Murata ,  Takashi Ogawa

发明人： Tsutomu Murata ,  Takashi Ogawa

IPC分类号： G09G3/30

CPC分类号： G09G3/3233 ,  G09G3/3275 ,  G09G2300/0819 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2330/12

摘要： In performing a display in accordance with a video signal, a display signal for inspection is supplied to a pixel within a predetermined inspected row to operate an EL element therein and to thereby detect a current that flows through the EL element. The current detection data is stored in a volatile primary memory. In accordance with data obtained in this manner, a variation correcting section sequentially corrects data signals to be supplied to the respective pixel. At the time of turning on power, the variation correcting section performs the correction using the current detection data saved in a secondary memory. With this arrangement, it is possible to execute display variation correction from immediately after turning on power, and it is also possible to execute real-time correction.

摘要翻译： 在根据视频信号执行显示时，将用于检查的显示信号提供给预定行中的像素，以在其中操作EL元件，从而检测流经EL元件的电流。 当前检测数据存储在易失性主存储器中。 根据以这种方式获得的数据，变化校正部分顺序校正要提供给各个像素的数据信号。 在接通电源时，变化校正部分使用保存在辅助存储器中的当前检测数据进行校正。 通过这种布置，可以在打开电源之后立即执行显示变化校正，并且还可以执行实时校正。

公开(公告)号：US09077267B2

公开(公告)日：2015-07-07

申请号：US13495642

申请日：2012-06-13

申请人： Tsutomu Murata

发明人： Tsutomu Murata

IPC分类号： H02P6/00 ,  H02P6/18 ,  H02P27/00 ,  H02P7/285 ,  H02P6/20

CPC分类号： H02P6/008 ,  H02P6/182 ,  H02P6/21 ,  H02P6/26

摘要： A driving circuit for a single-phase-brushless motor, includes: a driving-signal-generating circuit to generate a driving signal for supplying, to a driving coil of the single-phase-brushless motor, first- and second-driving currents, alternately with a de-energized period therebetween during which neither of the first or the second driving current is supplied to the driving coil; an output circuit to supply the first or the second driving current to the driving coil in response to the driving signal; and a zero-cross detecting circuit to detect a zero cross of an induced voltage, generated across the driving coil, during the de-energized period, wherein the driving-signal-generating circuit determines a length of a subsequent energized period based on a driving cycle from a start of an energized period, during which the output circuit supplies the first or the second driving current to the driving coil, to a time when the zero-cross-detecting circuit detects the zero cross.

摘要翻译： 一种用于单相无刷电动机的驱动电路，包括：驱动信号发生电路，用于产生用于向单相无刷电动机的驱动线圈提供第一和第二驱动电流的驱动信号， 交替地在它们之间的断电时段期间，第一或第二驱动电流都不被提供给驱动线圈; 输出电路，用于响应于驱动信号将第一或第二驱动电流提供给驱动线圈; 以及零交叉检测电路，用于在去激励周期期间检测跨越驱动线圈产生的感应电压的零交叉，其中所述驱动信号发生电路基于驱动来确定随后的通电时段的长度 从输出电路向驱动线圈提供第一或第二驱动电流的通电时段的开始循环到零交叉检测电路检测到零交叉的时刻。

公开(公告)号：US20130009690A1

公开(公告)日：2013-01-10

申请号：US13533638

申请日：2012-06-26

申请人： Tsutomu Murata

发明人： Tsutomu Murata

IPC分类号： H03K17/56

CPC分类号： H02P25/034 ,  H02M7/5387

摘要： A PWM mode for turning on and off two output transistors by an output of a high impedance circuit and a constant voltage mode for controlling voltages at two output terminals by an output of an op amp are provided. Then, the two modes are switched by a switching signal.

摘要翻译： 提供了通过高阻抗电路的输出和用于通过运算放大器的输出来控制两个输出端子处的电压的恒定电压模式来打开和关闭两个输出晶体管的PWM模式。 然后，通过开关信号切换两种模式。

公开(公告)号：US20130009582A1

公开(公告)日：2013-01-10

申请号：US13495642

申请日：2012-06-13

申请人： Tsutomu Murata

发明人： Tsutomu Murata

IPC分类号： H02P6/18

CPC分类号： H02P6/008 ,  H02P6/182 ,  H02P6/21 ,  H02P6/26

摘要： A driving circuit for a single-phase-brushless motor, includes: a driving-signal-generating circuit to generate a driving signal for supplying, to a driving coil of the single-phase-brushless motor, first- and second-driving currents, alternately with a de-energized period therebetween during which neither of the first or the second driving current is supplied to the driving coil; an output circuit to supply the first or the second driving current to the driving coil in response to the driving signal; and a zero-cross detecting circuit to detect a zero cross of an induced voltage, generated across the driving coil, during the de-energized period, wherein the driving-signal-generating circuit determines a length of a subsequent energized period based on a driving cycle from a start of an energized period, during which the output circuit supplies the first or the second driving current to the driving coil, to a time when the zero-cross-detecting circuit detects the zero cross.

摘要翻译： 一种用于单相无刷电动机的驱动电路，包括：驱动信号发生电路，用于产生用于向单相无刷电动机的驱动线圈提供第一和第二驱动电流的驱动信号， 交替地在它们之间的断电时段期间，第一或第二驱动电流都不被提供给驱动线圈; 输出电路，用于响应于驱动信号将第一或第二驱动电流提供给驱动线圈; 以及零交叉检测电路，用于在去激励周期期间检测跨越驱动线圈产生的感应电压的零交叉，其中所述驱动信号发生电路基于驱动来确定随后的通电时段的长度 从输出电路向驱动线圈提供第一或第二驱动电流的通电时段的开始循环到零交叉检测电路检测到零交叉的时刻。