Data storage method

Details Data storage method Data storage method

1989-01-06

1991-10-15

Wolff, John H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 31, G11B 2710, G11B 1518, G11B 502

Patent

active

050579509

ABSTRACT:
Before reading/writing a newly loaded data tape, it is known to carry out read/write tests on the tape drive concerned by using a section of the tape set aside for this purpose. This test section is generally marked off by formatting keys which must be accessed and read to identify the test section. In order to facilitate access to the test section, the disclosed data storage method locates the test section in the region of tape between a beginning-of-media BOM position and a beginning-of-recording BOR position with the latter being at a known distance from BOM. As a result, it is possible to rely simply on displacement measurement to access the test section from BOM. As a precaution, a check can be made for possible overshoot error in the tape positioning means so as to avoid testing being carried out beyond BOR.

REFERENCES:
patent: 3947877 (1976-03-01), Vittorelli
patent: 4360842 (1982-11-01), Onishi et al.
patent: 4635141 (1987-01-01), Coulter
patent: 4764822 (1988-08-01), Taniguchi et al.
patent: 4821128 (1989-04-01), Inazawa et al.
IEEE Transactions of Consumer Electronics, "A Fast Random Accessing Scheme for R-Dat", vol. CE-33, No. 3, Aug. 1987, pp. 275-284, left hand column, line 22-right hand column, line 36, FIGS. 1-4, (p. 275).

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