Invention Grant
- Patent Title: Optical disc apparatus
- Patent Title (中): 光盘装置
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Application No.: US12430232Application Date: 2009-04-27
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Publication No.: US07940611B2Publication Date: 2011-05-10
- Inventor: Nobuhiro Washiya , Kazuhiko Ono
- Applicant: Nobuhiro Washiya , Kazuhiko Ono
- Applicant Address: JP Tokyo
- Assignee: Hitachi-LG Data Storage, Inc.
- Current Assignee: Hitachi-LG Data Storage, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Kilpatrick Townsend & Stockton LLP
- Priority: JP2008-164421 20080624
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An optical disc apparatus comprises an overcurrent detector and when the overcurrent detector detects an overcurrent during a recording operation or a reproduction operation and during an operation for controlling a focus of an objective lens, a rotation speed of an optical disc is reduced and an actuator is controlled to cause the objective lens to be in a retracted state under the condition that a disc motor exerts brake force. The objective lens is in the retracted state until the rotation speed of the optical disc becomes equal to or smaller than a predetermined value and when the rotation speed of the optical disc is equal to or smaller than the predetermined value, the objective lens is released from the retracted state.
Public/Granted literature
- US20090316538A1 Optical Disc Apparatus Public/Granted day:2009-12-24
Information query
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