Invention Grant
- Patent Title: Method for evaluating optical recording medium, optical recording medium, and information-recording/reproducing apparatus
- Patent Title (中): 评估光记录介质，光记录介质和信息记录/再现装置的方法
-
Application No.: US11389099Application Date: 2006-03-27
-
Publication No.: US07768885B2Publication Date: 2010-08-03
- Inventor: Naoki Kitagaki , Makoto Miyamoto , Makoto Iimura , Satoshi Sukada
- Applicant: Naoki Kitagaki , Makoto Miyamoto , Makoto Iimura , Satoshi Sukada
- Applicant Address: JP Ibaraki-shi
- Assignee: Hitachi Maxell, Ltd.
- Current Assignee: Hitachi Maxell, Ltd.
- Current Assignee Address: JP Ibaraki-shi
- Agency: Oliff & Berridge, PLC
- Priority: JP2005-093842 20050329
- Main IPC: G11B15/52
- IPC: G11B15/52
Abstract:
The reproduction durability of an optical recording medium is evaluated highly accurately in a short period of time by providing a method for evaluating the optical recording medium, the method including determining an operating laser power for heating a recording layer to a recording operating temperature; determining a temperature of the recording layer when a laser beam having a predetermined reproducing laser power is radiated during a data reproduction; determining a relationship between the reproducing laser power during the data reproduction and a reproduction durability times at the reproducing laser power; and determining a relationship between the temperature of the recording layer during the data reproduction and the reproduction durability times from the relationship between the reproducing laser power during the data reproduction and the reproduction durability times.
Public/Granted literature
Information query
IPC分类:
