Title:
FOCUS ADJUSTMENT METHOD AND OPTICAL DISK DEVICE USING THE SAME
Document Type and Number:
Japanese Patent JP2010192018
Kind Code:
A
Abstract:
To perform accurate and efficient focus adjustment in an optical disk device.
Data are recorded while changing a distance between an optical disk and an objective lens to determine a focusing condition for optimum recording of data. Data are reproduced while changing the distance between the optical disk and the objective lens to determine the focusing condition for the optimum recording of data.
Inventors:
ISHITOBI TATSUYA
Application Number:
JP2009033371A
Publication Date:
September 02, 2010
Filing Date:
February 17, 2009
Export Citation:
Assignee:
HITACHI LTD
HITACHI LG DATA STORAGE INC
HITACHI LG DATA STORAGE INC
International Classes:
G11B7/09; G11B7/0045
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Yuji Toda
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