公开(公告)号：US20110158461A1

公开(公告)日：2011-06-30

申请号：US12773783

申请日：2010-05-04

申请人： MIN-JOUNG KO ,  JIN PARK ,  JUNG Hyun LEE ,  SEUNG-KWON LEE

发明人： MIN-JOUNG KO ,  JIN PARK ,  JUNG Hyun LEE ,  SEUNG-KWON LEE

IPC分类号： H04R1/00

CPC分类号： H04N5/23212 ,  G02B7/28

摘要： An apparatus and a method for driving a voice coil actuator of a camera are disclosed. In the apparatus for driving a voice coil actuator of a camera, when an input shaping execution unit generates a shaping signal using a resonance frequency of the voice coil actuator to output a drive control signal subjected to input shaping, a drive circuit unit controls an operation of the voice coil actuator connected to a rear end according to the drive control signal using the shaping signal as an initial input. The shaping signal is used for removing resonance of the voice coil actuator and may be one of a 2-step shaping signal, a multi-step shaping signal having 4 or more steps, a linear shaping signal, a toggle shaping signal and the like. Accordingly, it is possible to control undesirable vibration by reducing high resonance response characteristics of the voice coil actuator and it is possible to implement an autofocus function more precisely.

摘要翻译： 公开了一种用于驱动相机的音圈致动器的装置和方法。 在用于驱动相机的音圈致动器的装置中，当输入整形执行单元使用音圈致动器的共振频率产生整形信号以输出经受输入整形的驱动控制信号时，驱动电路单元控制操作 根据使用整形信号作为初始输入的驱动控制信号连接到后端的音圈致动器。 整形信号用于去除音圈致动器的谐振，并且可以是2步整形信号，具有4级或更多级的多级整形信号，线性整形信号，触发整形信号等之一。 因此，可以通过降低音圈致动器的高谐振响应特性来控制不期望的振动，并且可以更精确地实现自动对焦功能。