Apparatus for driving voice coil actuator of camera and method thereof
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United States of America Patent
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Feb 19, 2013
Grant Date -
Jun 30, 2011
app pub date -
May 4, 2010
filing date -
Dec 31, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
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.
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