Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1997-06-02
1998-04-21
Edun, Muhammad N.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 58, 369 53, 369 47, G11B 700
Patent
active
057425744
ABSTRACT:
The reliability due to time-elapsing variation of the magneto-optic disk and the data recorded on the magneto-optic disk are evaluated. A magneto-optic disk driving apparatus can preserve a sheet of magneto-optic disk during the period over the endurable number of years, and a file manager can issue an alarm to the user in accordance with the deterioration state of the magneto-optic disk. The magneto-optic disk drive controlling apparatus for controlling the magneto-optic disk driving apparatus capable of taking in or taking out the magneto-optic disk by the operation of user's hands or the automatic transportation by use of the host computer comprises a disk deterioration judging (grasping) measure and a disk deterioration tolerance excess alarming measure. The file manager for realizing the IS&C file format in the magneto-optic disk by performing the operation of reading/writing the data on the magneto-optic disk in the magneto-optic disk driving apparatus by use of the execution program comprises a disk deterioration state grasping measure and a disk deterioration state alarming measure.
REFERENCES:
patent: 4792933 (1988-12-01), Suzuki
patent: 4821254 (1989-04-01), Satoh et al.
patent: 5473581 (1995-12-01), Yonezawa et al.
Edun Muhammad N.
Ricoh & Company, Ltd.
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