Invention Grant
- Patent Title: Method and device for performing tilt correction using multi-dimensional actuator
- Patent Title (中): 使用多维致动器执行倾斜校正的方法和装置
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Application No.: US10509453Application Date: 2003-04-01
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Publication No.: US07869320B2Publication Date: 2011-01-11
- Inventor: Jeroen Arnoldus Leonardus Johannes Raaymakers
- Applicant: Jeroen Arnoldus Leonardus Johannes Raaymakers
- Applicant Address: NL Eindhoven
- Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee: Koninklijke Philips Electronics N.V.
- Current Assignee Address: NL Eindhoven
- Priority: EP02076303 20020402
- International Application: PCT/IB03/01395 WO 20030401
- International Announcement: WO03/083850 WO 20031009
- Main IPC: G11B17/32
- IPC: G11B17/32 ; G11B15/62

Abstract:
In a method and device for performing tilt control, a focus and a tilt controlling output is generated, and a focusing and tilt state of an optical recording/reproducing beam is controlled by determining a radial tilt value based on a differentiation of focus control values obtained at different radii of said optical disk (1). The combination of, e.g., a 3D actuator with the dz/dr tilt measurement provides the advantage that focus and tilt adjustment can be performed in the same element. Thereby, influences or measurement variations caused by environmental conditions and/or circuit characteristics can be minimized to reduce compensations requirements. Furthermore, a 3D actuator (11) with a split coil arrangement may be used to provide a three-dimensional focus adjustment. Thereby, the 3D actuator (11) can be used for feed-forward tilt compensation without offset or gain errors and without any additional sensor.
Public/Granted literature
- US20050117472A1 Method and device for performing tilt correction using multi-dimensional actuator Public/Granted day:2005-06-02
Information query
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