Invention Grant
US08687472B1 Method and apparatus for determining the cleanliness of a lens in an optical disc drive
失效
用于确定光盘驱动器中的透镜的清洁度的方法和装置
- Patent Title: Method and apparatus for determining the cleanliness of a lens in an optical disc drive
- Patent Title (中): 用于确定光盘驱动器中的透镜的清洁度的方法和装置
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Application No.: US13670936Application Date: 2012-11-07
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Publication No.: US08687472B1Publication Date: 2014-04-01
- Inventor: Antonius Leonardus Johannes Dekker
- Applicant: Marvell International Ltd.
- Applicant Address: BM Hamilton
- Assignee: Marvell International Ltd.
- Current Assignee: Marvell International Ltd.
- Current Assignee Address: BM Hamilton
- Main IPC: G11B7/00
- IPC: G11B7/00 ; G11B7/1372 ; G11B7/09 ; G01N21/94
Abstract:
Apparatus having corresponding methods comprise: a light source configured to produce light; a lens configured to focus the light on an optical disc; a photo detector configured to obtain a measurement of the light reflected by the optical disc; and a controller configured to determine a cleanliness of the lens based on the measurement of the light reflected by the optical disc responsive to the lens focusing the light on a surface of the optical disc.
Information query
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