发明申请
- 专利标题： RECORDING QUALITY EVALUATION METHOD OF OPTICAL DISK AND OPTICAL DISK STORAGE SYSTEM
- 专利标题（中）： 光盘和光盘存储系统的记录质量评估方法
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申请号： US12977975申请日： 2010-12-23
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公开(公告)号： US20110235487A1公开(公告)日： 2011-09-29
- 发明人: MASAAKI KUREBAYASHI , SHINJI FUJITA , OSAMU KAWAMAE
- 申请人： MASAAKI KUREBAYASHI , SHINJI FUJITA , OSAMU KAWAMAE
- 优先权： JP2010-072674 20100326
- 主分类号： G11B20/18
- IPC分类号： G11B20/18
摘要：
There is provided a method of calculating the degradation over time of the quality of data recorded on an optical disk in a short time. In the method, when user data is recorded on a data area, a test signal including a component in which the signal level is smaller than a reference value, is recorded on a test area. Then, the test signal is reproduced from the test area when a predetermined time has passed, to calculate the quality degradation of the user data from the evaluation result. Alternatively, every time when the user data is recorded/reproduced on/from the data area, the test signal is recorded/reproduced repeatedly on/from the test area. Then, the test signal is reproduced from the test area at a predetermined timing, to calculate the quality degradation of the user data from the evaluation result.
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