Invention Grant
- Patent Title: Disc-driving apparatus and method for controlling the same
- Patent Title (中): 盘驱动装置及其控制方法
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Application No.: US11508844Application Date: 2006-08-24
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Publication No.: US07800989B2Publication Date: 2010-09-21
- Inventor: Masatoshi Nishino
- Applicant: Masatoshi Nishino
- Applicant Address: JP Tokyo
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2005-252858 20050831
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
A disc-driving apparatus has an optical pickup including an objective lens. The objective lens has an optical axis that is met on a line excluding a central axis of revolution of a disc. The apparatus has storage device that stores plural correction values obtained by detecting fluctuations in amplitude of a tracking error signal with respect to a radial direction of the disc or a quantity of de-tracking with respect to the radial direction thereof. The apparatus has control device that reads the correction value from the storage device and, when the optical pickup is operating, corrects the tracking error signal to conduct servo control based on the corrected tracking error signal.
Public/Granted literature
- US20070047405A1 Disc-driving apparatus and method for controlling the same Public/Granted day:2007-03-01
Information query
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