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

PATENT NO 10608563
APP PUB NO 20180205333A1
SERIAL NO

15306361

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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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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Patent Owner(s)

Patent OwnerAddress
DONGWOON ANATECH CO LTD9-10TH FLOOR ARIRANG TOWER 2351 NAMBUSUNHWAN-RO SEOCHO-GU SEOUL 06713

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cho, Sin Won Seoul, KR 1 0
Lee, Ho Jun Seoul, KR 55 146
Lee, Seung Kwon Seoul, KR 4 10
Lee, Sun Pyo Seoul, KR 1 0

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