Invention Grant
- Patent Title: Objective lens driving device, control circuit, optical disc device and objective lens driving method
- Patent Title (中): 物镜驱动装置,控制电路,光盘装置和物镜驱动方法
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Application No.: US11918430Application Date: 2006-04-06
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Publication No.: US08284646B2Publication Date: 2012-10-09
- Inventor: Yutaka Murakami , Hironori Tomita
- Applicant: Yutaka Murakami , Hironori Tomita
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2005-115323 20050413
- International Application: PCT/JP2006/307333 WO 20060406
- International Announcement: WO2006/112269 WO 20061026
- Main IPC: G11B15/62
- IPC: G11B15/62 ; G11B17/32 ; G11B7/00

Abstract:
An objective lens driving device includes an objective lens holder that holds an objective lens, plural elastic supporting members through that support the objective lens holder, tracking coils and that drive the objective lens holder in the tracking direction, tilting coils that tilt the objective lens holder with respect to the optical axis passing through the objective lens, a tracking control circuit that drives the tracking coils, and a tilting control circuit that drives the tilting coils. The tilting control circuit drives the tilting coils using a signal yielded by multiplying a tracking driving signal from the tracking control circuit by a specific scaling factor so as to cancel out a tilting force of the objective lens holder generated by the tracking coils.
Public/Granted literature
- US20090040905A1 Objective lens driving device, control circuit, optical disc device and objective lens driving method Public/Granted day:2009-02-12
Information query
IPC分类: