发明名称 |
Failure prediction apparatus and failure prediction method |
摘要 |
An optical pickup which has a failure prediction apparatus for predicting a failure of a laser diode has an input inputting a value of a current that flows through the laser diode and is measured at predetermined time intervals, a storage storing the current values inputted by said input, a detector detecting a current value that is a current value at any one of the measurement times of day stored in said storage and that has a change greater than or equal to a predetermined value relative to the current value at the preceding measurement time of day, and a generator generating a prediction curve that indicates a relationship between said elapsed time and the current value applicable at and after the measurement time of day of the current value detected by said detector. |
申请公布号 |
US8204700(B2) |
申请公布日期 |
2012.06.19 |
申请号 |
US20080327333 |
申请日期 |
2008.12.03 |
申请人 |
HORIUCHI AKIHIRO;NORIMATSU SATSUKI;YAMAMOTO AKIRA;SAKANE YUICHIRO;FUJITSU LIMITED |
发明人 |
HORIUCHI AKIHIRO;NORIMATSU SATSUKI;YAMAMOTO AKIRA;SAKANE YUICHIRO |
分类号 |
G01R31/00 |
主分类号 |
G01R31/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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