Title:
光ディスク装置
Document Type and Number:
Japanese Patent JP4447037
Kind Code:
B2
Abstract:
There is provided an optical disk device in which no deterioration in playability at resisting vibrations in a disk servo system is generated by inadvertently recognizing it is in a non-vibrating state irregardless of it is in a vibrating state in a disk servo system. By providing two threshold values of a threshold value for detecting a vibration state during a non-vibration state and a threshold value for detecting the non-vibration state during the vibration state, or by performing a filtering to an error signal using a filter having filter constants different between during the vibrating state and during the non-vibrating state, it is possible to prevent erroneous recognition of the non-vibration state and thereby to prevent deterioration in playability of the disk servo during resisting earthquake.
Inventors:
Kitaoka Hiroyuki
Application Number:
JP2007519095A
Publication Date:
April 07, 2010
Filing Date:
June 02, 2006
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
G11B7/09
Domestic Patent References:
| JP3181024A | ||||
| JP5250706A |
Attorney, Agent or Firm:
Kenichi Hayase