Driving control device for voice coil motor and method of using the same
Number of patents in Portfolio can not be more than 2000
United States of America
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Mar 31, 2020
Grant Date -
Jul 19, 2018
app pub date -
Jun 30, 2016
filing date -
Jun 30, 2016
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a driving control of a voice coil motor (hereinafter, referred to as ‘VCM’) which moves lens of a camera module, more particularly to a driving control method for VCM capable of reducing the noise generated at the time of initial driving or landing of the lens and reducing the moving time thereof, and the method is characterized by and include the steps of: applying a linearly increasing current with a first slope to the VCM up to a pre-set first inflection point in response to a camera operation-on command; and moving the lens to an infinite position by applying a linearly increasing current with a second slope less steep than the first slope to the VCM from the first inflection point to the infinite position.
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Family
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Cited Art Landscape
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