公开(公告)号：US20110181210A1

公开(公告)日：2011-07-28

申请号：US13013234

申请日：2011-01-25

申请人： Tsutomu MURATA

发明人： Tsutomu MURATA

IPC分类号： H02K33/00

CPC分类号： H02P25/034

摘要： A drive signal generating unit generates a drive signal used to alternately deliver a positive current and a negative current to a coil with a nonconducting period inserted between conducting periods. A driver unit generates a drive current in response to the drive signal generated by the drive signal generating unit and supplies the drive current to a coil. The drive signal generating unit estimates the eigen frequency of a linear vibration motor based on a detected position of the zero cross occurring in the coil during the nonconduting period, and the frequency of the drive signal is brought close to the estimated eigen frequency. The zero-cross detecting unit sets a detection window for avoiding the detection of zero cross of voltages other than the induced voltage. The zero-cross detecting unit enables a zero cross detected within the detection window and disables a zero cross detected outside the detection window.

摘要翻译： 驱动信号生成单元生成用于交替地将正电流和负电流递送到线圈的驱动信号，该线圈具有插入导通周期之间的非导通时段。 驱动器单元响应于由驱动信号生成单元产生的驱动信号产生驱动电流，并将驱动电流提供给线圈。 驱动信号生成单元基于在非静默期间发生在线圈中的零交叉点的检测位置来估计线性振动电动机的本征频率，并且使驱动信号的频率接近估计的本征频率。 零交叉检测单元设置用于避免检测除感应电压以外的电压的零交叉的检测窗口。 零交叉检测单元使得能够在检测窗口内检测到零交叉，并禁止在检测窗口外部检测到零交叉。

公开(公告)号：US20100315519A1

公开(公告)日：2010-12-16

申请号：US12816054

申请日：2010-06-15

申请人： Tomofumi Watanabe

发明人： Tomofumi Watanabe

IPC分类号： H04N5/228

CPC分类号： G03B5/00 ,  H04N5/23248 ,  H04N5/23258 ,  H04N5/23287

摘要： In a vibration correction control circuit mounted on an image pickup apparatus including an image pickup unit, provided with lenses, image pickup devices and vibration detecting element, and a driver element for adjusting the position of the image pickup unit, the equalizer generates a drive signal used to move the image pickup unit in a direction along which to reduce the vibration applied to the image pickup unit, based on the output signal of the vibration detecting element. A verifying-signal input circuit supplies a dummy vibration-component signal to the equalizer.

摘要翻译： 在安装在包括具有透镜，图像拾取装置和振动检测元件的图像拾取单元的图像拾取装置的振动校正控制电路中，以及用于调整图像拾取单元的位置的驱动元件，均衡器产生驱动信号 用于基于振动检测元件的输出信号，使图像拾取单元沿着减小施加到图像拾取单元的振动的方向移动。 验证信号输入电路向均衡器提供虚拟振动分量信号。

公开(公告)号：US20090160959A1

公开(公告)日：2009-06-25

申请号：US12332743

申请日：2008-12-11

申请人： Tomofumi Watanabe ,  Yasunori Nagata

发明人： Tomofumi Watanabe ,  Yasunori Nagata

IPC分类号： H04N5/228

CPC分类号： H04N5/23248 ,  G02B27/646 ,  H04N5/2254

摘要： A first equalizer generates a vibration-component signal indicating the amount of movement of an image pickup apparatus according to an output signal of a vibration detecting element for detecting the vibration of the image pickup apparatus. The second equalizer generates a drive signal used to control a driver element to correct the position of a lens or image pickup devices, based on the output signal of a position detecting element for detecting the position of the lens to be driven or the image pickup devices to be driven and the vibration-component signal. A control unit verifies the operations of the driver element, the position detecting element, the vibration detecting element and the first equalizer, based on the output signal of the position detecting element and the vibration-component signal.

摘要翻译： 第一均衡器根据用于检测图像拾取装置的振动的振动检测元件的输出信号产生指示图像拾取装置的移动量的振动分量信号。 第二均衡器基于用于检测要驱动的透镜的位置的位置检测元件的输出信号或图像拾取装置产生用于控制驱动元件以校正透镜或图像拾取装置的位置的驱动信号 被驱动和振动分量信号。 控制单元基于位置检测元件的输出信号和振动分量信号来验证驱动元件，位置检测元件，振动检测元件和第一均衡器的动作。

公开(公告)号：US20110181208A1

公开(公告)日：2011-07-28

申请号：US13012568

申请日：2011-01-24

申请人： Tsutomu MURATA

发明人： Tsutomu MURATA

IPC分类号： H02K33/14

CPC分类号： H02P25/028 ,  H02P25/034

摘要： A drive signal generating unit generates a drive signal used to alternately deliver a positive current and a negative current to a coil with a nonconducting period inserted between conducting periods. A driver unit generates a drive current in response to the drive signal generated by the drive signal generating unit and supplies the drive current to a coil. An induced voltage detector detects an induced voltage occurring in the coil during the nonconducting period. A zero-cross detecting unit detects the zero cross of the induced voltage detected by the induced voltage detector. The drive signal generator estimates the eigen frequency of the linear vibration motor based on a detected position of the zero cross, and the frequency of the drive signal is brought close to the estimated eigen frequency.

摘要翻译： 驱动信号生成单元生成用于交替地将正电流和负电流递送到线圈的驱动信号，该线圈具有插入导通周期之间的非导通时段。 驱动器单元响应于由驱动信号生成单元产生的驱动信号产生驱动电流，并将驱动电流提供给线圈。 感应电压检测器检测在非导通期间在线圈中产生的感应电压。 零交叉检测单元检测由感应电压检测器检测到的感应电压的零交叉。 驱动信号发生器基于检测到的零交叉位置来估计线性振动电动机的本征频率，驱动信号的频率接近估计的本征频率。

公开(公告)号：US20110074321A1

公开(公告)日：2011-03-31

申请号：US12893531

申请日：2010-09-29

申请人： Kazumasa TAKAI

发明人： Kazumasa TAKAI

IPC分类号： H02P6/08

CPC分类号： H02P6/18

摘要： A differential amplifier detects a coil current Is at the time of steady rotation of a synchronous motor. An application voltage S0 at this time is detected from an output of an ATT circuit and so on. With the use of the coil current Is which is detected, the application voltage S0 at that time, and a predetermined scaling factor As, an induced current Ib is obtained based on Ib=As·S0−Is. The application voltage to the motor is controlled based on the induced current Ib which is obtained.

摘要翻译： 差动放大器检测同步电机稳定旋转时的线圈电流Is。 从ATT电路的输出等检测此时的施加电压S0。 通过使用检测到的线圈电流Is，根据Ib = As·S0-Is，求出此时的施加电压S0和规定的比例因子As，感应电流Ib。 基于获得的感应电流Ib来控制对电动机的施加电压。

公开(公告)号：US20110181209A1

公开(公告)日：2011-07-28

申请号：US13012577

申请日：2011-01-24

申请人： Tsutomu MURATA

发明人： Tsutomu MURATA

IPC分类号： H02K33/16

CPC分类号： H02P3/20 ,  H02P25/032 ,  H02P25/034

摘要： A drive signal generating unit generates a drive signal used to alternately deliver a positive current and a negative current to a coil. A driver unit generates the drive current in response to the drive signal generated by the drive signal generating unit and supplies the drive current to the coil. After the drive termination of a linear vibration motor, the drive signal generating unit generates a drive signal whose phase is opposite to the phase of the drive signal generated during the motor running. The driver unit quickens the stop of the linear vibration motor by supplying to the coil the drive current of opposite phase according to the drive signal of opposite phase.

摘要翻译： 驱动信号生成单元生成用于交替地向线圈传送正电流和负电流的驱动信号。 驱动器单元响应于由驱动信号产生单元产生的驱动信号产生驱动电流，并将驱动电流提供给线圈。 在线性振动电动机的驱动终止之后，驱动信号产生单元产生与电动机运行期间产生的驱动信号的相位相反的驱动信号。 驱动单元根据相位驱动信号，向线圈供给反相驱动电流，加快线性振动电机的停止。