Disk-type recording medium drive and method of self-diagnosing d

Details Disk-type recording medium drive and method of self-diagnosing d Disk-type recording medium drive and method of self-diagnosing d

1994-05-04

1996-06-25

Epps, Georgia Y.

Dynamic information storage or retrieval

Condition indicating, monitoring, or testing

Including radiation storage or retrieval

369 58, 369 47, G11B 700

Patent

active

055306870

ABSTRACT:
A device for driving the disk-type recording medium, such as a magnetooptical disk, has a read and write system for reading data from and writing data on the disk-type recording medium. The read and write system is self-diagnosed by generating time data which vary with time after the device is turned on, and detecting when the disk-type recording medium is loaded into the device, generating test data depending on the time data at the time the disk-type recording medium is loaded as detected, writing the test data in a predetermined area on the disk-type recording medium with the read and write system, reading the written test data from the predetermined area on the disk-type recording medium with the read and write system, and determining whether the test data read from the disk-type recording medium agree with the generated test data.

REFERENCES:
patent: 4969139 (1990-11-01), Azumatani et al.
patent: 5185733 (1993-02-01), Finkelstein et al.
patent: 5392269 (1995-02-01), Horie

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