Apparatus for driving voice coil motor actuator
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United States of America Patent
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Mar 31, 2015
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app pub date -
Aug 18, 2014
filing date -
Apr 16, 2014
priority date (Note) -
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Abstract
Embodiments of the invention provide an apparatus for driving a voice coil motor actuator providing a driving signal to a coil for controlling a position of a lens barrel in which a magnet is equipped. The apparatus includes a plurality of hall sensors configured to detect the position of the lens barrel in which the magnet is equipped, and a voice coil motor driving integrated circuit configured to provide the driving signal to the coil based on outputs from the plurality of hall sensors and a received target position. The plurality of hall sensors are embedded in the voice coil motor driving integrated circuit along a moving direction of the magnet.
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