Title:
ディスク装置
Document Type and Number:
Japanese Patent JP4482279
Kind Code:
B2
Abstract:
Herein disclosed is a optical disc driving apparatus for driving an optical disc (800) having a central axis, comprising: a turntable (110) having a central axis, said turntable (110) being adapted to retain an optical disc (800) under the condition that said central axis of said turntable (110) is axially aligned with said central axis of said optical disc (800); an optical pickup unit (140) movable toward and away from said central axis of said turntable (110), said optical pickup unit (140) being adapted to write or retrieve information from said optical disc (800) retained by said turntable (110); a stepping motor (190) having a plurality of coils; a detecting unit (210) for detecting an exterior vibration while being vibrated in response to said exterior vibration; a driver IC (200) for controlling said stepping motor (190) to have said stepping motor (190) assume two different operation states consisting of a first operation state to drive said stepping motor (190) to ensure that said optical pickup unit (140) is moved toward and away from said central axis of said turntable (110), and a second operation state to drive said stepping motor (190) to ensure that said optical pickup unit (140) fails to be moved toward and away from said central axis of said turntable (110); and a control signal producing unit (360) for producing a control signal to have said driver IC (200) supply control currents in association with said exterior vibration detected by said detecting unit (210) to said coils of said stepping motor (190) to have said stepping motor (190) assume said second operation state after judging whether or not said exterior vibration detected by said detecting unit (210) is larger in amplitude than a predetermined threshold level.
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Inventors:
Koji Shigeta
Hiroki Kobayashi
Hiroki Kobayashi
Application Number:
JP2003030076A
Publication Date:
June 16, 2010
Filing Date:
February 06, 2003
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
G11B21/02; G11B21/08; G11B7/085
Domestic Patent References:
| JP64046272A | ||||
| JP2000137525A | ||||
| JP10243695A | ||||
| JP5120708A | ||||
| JP6195862A |
Attorney, Agent or Firm:
Gunichiro Ariga