- 专利标题: Driving control device for voice coil motor and method of using the same
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申请号: US15306361申请日: 2016-06-30
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公开(公告)号: US10608563B2公开(公告)日: 2020-03-31
- 发明人: Seung Kwon Lee , Sun Pyo Lee , Ho Jun Lee , Sin Won Cho
- 申请人: DONGWOON ANATECH CO., LTD.
- 申请人地址: KR Seoul
- 专利权人: DONGWOON ANATECH CO., LTD.
- 当前专利权人: DONGWOON ANATECH CO., LTD.
- 当前专利权人地址: KR Seoul
- 代理机构: Stein IP, LLC
- 国际申请: PCT/KR2016/007074 WO 20160630
- 国际公布: WO2018/004037 WO 20180104
- 主分类号: H02P25/02
- IPC分类号: H02P25/02 ; H02K33/18 ; H02K1/34 ; H02P7/025 ; G02B7/04 ; G03B13/34 ; H02K41/035
摘要:
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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