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1. 发明申请

US20060192458A1 Piezoelectric ultrasonic motor driver 失效
标题翻译：压电超声波马达驱动
公开(公告)号：US20060192458A1
公开(公告)日：2006-08-31
申请号：US11139516
申请日：2005-05-31
申请人： Gui Lee , Dong Lee , Jung Ryu , Byung Kang , Hyoung Jeon
发明人： Gui Lee , Dong Lee , Jung Ryu , Byung Kang , Hyoung Jeon
IPC分类号： H01L41/09
CPC分类号： H02N2/147 , H02N2/0015
摘要： The present invention provides a piezoelectric ultrasonic motor driver which can perform self-oscillation, adjust the rotational direction of the motor, and be easy to manufacture. The motor includes a metal body having a desired shape; a plurality of piezoelectric plates attached to surfaces of the metal body, contracted and expanded to rotate the metal body; a self-oscillation unit for oscillating at an electromechanical frequency of the piezoelectric plates an electrical signal; and a delay unit for delaying an oscillation signal of the self-oscillation unit in phase by 90 or −90 degrees according to a desired rotational direction.
摘要翻译：本发明提供一种能够进行自振荡的压电超声波马达驱动器，调整电动机的旋转方向，易于制造。马达包括具有期望形状的金属体; 多个压电板，附接到金属体的表面，收缩并膨胀以使金属体旋转; 自振荡单元，用于在压电板的机电频率处振荡电信号; 以及延迟单元，用于根据期望的旋转方向将自振荡单元的振荡信号相位延迟90度或-90度。

2. 发明申请

US20050146907A1 SINGLE-STAGE BACKLIGHT INVERTER AND METHOD FOR DRIVING THE SAME 失效
标题翻译：单级背照灯逆变器及其驱动方法
公开(公告)号：US20050146907A1
公开(公告)日：2005-07-07
申请号：US10795341
申请日：2004-03-09
申请人： Hyoung Jeon , Byoung Min , Hyun Kim
发明人： Hyoung Jeon , Byoung Min , Hyun Kim
IPC分类号： H05B41/26 , H02M7/5387 , H05B41/282 , H02M3/335
CPC分类号： H05B41/2828 , H02M7/53871 , Y02B20/186
摘要： Disclosed herein are a single-stage backlight inverter and a method for driving the same. The single-stage backlight inverter comprises a main oscillator for generating a predetermined triangle-wave oscillation signal, a predetermined clock signal and an inverted clock signal, and an output drive controller responsive to the triangle-wave oscillation signal, clock signal and inverted clock signal from the main oscillator and first and second reference voltages set therein. The second reference voltage has a level set to an intermediate level of the triangle-wave oscillation signal. The output drive controller is adapted to generate a first drive control signal and generate a second drive control signal. The inverter further comprises a first output unit for outputting a pair of first switching signals in response to the first drive control signal, and a second output unit for outputting a pair of second switching signals in response to the second drive control signal.
摘要翻译：本文公开了单级背光逆变器及其驱动方法。单级背光反相器包括用于产生预定三角波振荡信号的主振荡器，预定时钟信号和反相时钟信号，以及响应于三角波振荡信号，时钟信号和反相时钟信号的输出驱动控制器从主振荡器和其中设置的第一和第二参考电压。第二参考电压具有设置为三角波振荡信号的中间电平的电平。输出驱动控制器适于产生第一驱动控制信号并产生第二驱动控制信号。逆变器还包括用于响应于第一驱动控制信号输出一对第一开关信号的第一输出单元和用于响应于第二驱动控制信号输出一对第二开关信号的第二输出单元。

3. 发明申请

US20060061232A1 Piezoelectric actuator drive system 有权
公开(公告)号：US20060061232A1
公开(公告)日：2006-03-23
申请号：US10994459
申请日：2004-11-23
申请人： Byoung Min , Hyoung Jeon , Hyun Kim
发明人： Byoung Min , Hyoung Jeon , Hyun Kim
IPC分类号： H01L41/09
CPC分类号： H02N2/0075 , H02N2/147
摘要： Disclosed herein is a piezoelectric actuator drive system for forward or backward driving a piezoelectric actuator for zooming and/or focusing in a camera module. The piezoelectric actuator drive system comprises a power supply for supplying an operating voltage, a drive controller for controlling generation of a forward/backward drive signal for a piezoelectric actuator in response to an operation ON select signal and a forward/backward driving select signal, a clock generator for generating a first clock signal in response to the operating voltage from the power supply, and a drive signal generator for generating and supplying the forward or backward drive signal to the piezoelectric actuator in response to the first clock signal from the clock generator and the operating voltage from the power supply under the forward/backward drive signal generation control of the drive controller.

4. 发明申请

US20050213653A1 Variable square-wave drive device 失效
标题翻译：可变方波驱动装置
公开(公告)号：US20050213653A1
公开(公告)日：2005-09-29
申请号：US10849960
申请日：2004-05-21
申请人： Byoung Min , Hyun Kim , Hyoung Jeon
发明人： Byoung Min , Hyun Kim , Hyoung Jeon
IPC分类号： G03B3/10 , G02B3/14 , G02B7/08 , G02F1/13 , G02F1/133 , G02F1/29 , G03B13/34 , G09G3/36 , H01R13/66 , H03K7/02 , H03K7/08 , H04B17/00
CPC分类号： G02F1/13306 , G02F1/29
摘要： A variable square-wave drive device for controlling square waves using feedback- and bias-control methods. The variable square-wave drive device includes an oscillator for generating a clock pulse; a frequency-divider/duty controller for frequency-dividing the clock pulse received from the oscillator to generate a clock signal and a square-wave signal; a drive for amplifying the square-wave signal received from the frequency-divider/duty controller according to a bias voltage, generating first and second square-wave signals having opposite phases, and outputting the first and second square-wave signals as a square-wave drive signal; a feedback controller for comparing a predetermined voltage variable determined by a user with the bias voltage of the drive to generate a comparison result signal; a switching controller for generating a switching signal upon receiving the comparison result signal from the feedback controller; and a bias voltage regulator for charging/discharging the input voltage according to the switching signal received from the switching controller so that it can adjust the bias voltage of the drive.
摘要翻译：一种使用反馈和偏置控制方法控制方波的可变方波驱动装置。可变方波驱动装置包括用于产生时钟脉冲的振荡器; 用于对从振荡器接收的时钟脉冲进行分频以产生时钟信号和方波信号的分频器/占空比控制器; 驱动器，用于根据偏置电压放大从分频器/占空比控制器接收的方波信号，产生具有相反相位的第一和第二方波信号，并将第一和第二方波信号输出为方波，波驱动信号; 用于将由用户确定的预定电压变量与所述驱动器的偏置电压进行比较以产生比较结果信号的反馈控制器; 切换控制器，用于在从反馈控制器接收到比较结果信号时产生切换信号; 以及偏置电压调节器，用于根据从开关控制器接收的开关信号对输入电压进行充电/放电，从而可以调节驱动器的偏置电压。

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