Recording/reproducing apparatus, and method of detecting...

Details Recording/reproducing apparatus, and method of detecting... Recording/reproducing apparatus, and method of detecting...

2007-08-21

2007-08-21

Wellington, Andrea (Department: 2627)

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

C369S053370, C369S116000, C372S025000, C372S031000

Reexamination Certificate

active

10935184

ABSTRACT:
A data recording/reproducing apparatus wherein various data to be used for maintenance are measured, and parameters required for analysis of the maintenance data are prerecorded to realize prediction of the service life of a semiconductor laser and detection of occurrence of any trouble that may be derived therefrom. In this apparatus where data are recorded in and/or reproduced from a recording medium, the internal state of the apparatus is measured, then any abnormal state in the apparatus is detected on the basis of abnormal state decision data, and the detected state is transmitted to an external information processor. The apparatus comprises a means for measuring first data relative to the apparatus; a first memory means for storing second data to make a decision as to an abnormal state of the measured first data; a means for generating third data relative to maintenance of the apparatus on the basis of the first and second data; and an output means for delivering the third data as an output.

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patent: 5625616 (1997-04-01), Koike et al.
patent: 5844928 (1998-12-01), Shastri et al.
patent: 6836455 (2004-12-01), Kamon et al.

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