发明名称 |
Voice coil motor control device and method of driving the same, image pickup device |
摘要 |
The present invention provides a control device capable of improving hysteresis characteristics of a voice coil motor (31) and attaining a suitable lens position without complicating the structure of the control device. As solving means of the invention, a voice coil motor control device (30) includes a driving current control part (34) that controls a driving current supplied to the voice coil motor (31) in accordance with a driving pulse subjected to pulse width modulation, and a driving pulse control part (32) that divides a drive period of the voice coil motor (31) into a movement period and a holding period, and controls the driving pulse by changing the duty ratio of the driving pulse during the movement period in accordance with a duty setting value and fixing the duty ratio of the driving pulse during the holding period to the duty setting value.
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申请公布号 |
US7760442(B2) |
申请公布日期 |
2010.07.20 |
申请号 |
US20050666945 |
申请日期 |
2005.10.25 |
申请人 |
MITSUBISHI ELECTRIC CORPORATION |
发明人 |
ISHIDA KOZO;MICHIMORI ATSUSHI;KOMORI NORIYUKI;KUNISHIO HIDEKI;SUGIURA HIROAKI;ITOW TAKASHI;KUNO TETSUYA |
分类号 |
G02B15/14;G02B7/02 |
主分类号 |
G02B15/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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