Variable bits per inch recording

Details Variable bits per inch recording Variable bits per inch recording

1997-05-16

1999-12-07

Sniezek, Andrew L.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

360 51, G11B 509

Patent

active

059993529

ABSTRACT:
A disc drive and a method of storing data using the disc drive are disclosed. Multiple data heads are each supported adjacent a corresponding one of multiple disc surfaces of a disc stack to form multiple head/media combinations. A separate guardband or recording density capability for each of the multiple head/media combinations is determined. An actual recording density is assigned to each of the multiple head/media combinations based upon the recording density capability for the particular head/media combination. The actual recording density assigned to each of the multiple head/media combinations can be different from the actual recording densities assigned to other head/media combinations. The disc drive is controlled such that data is recorded on each of the surfaces at the actual recording density assigned thereto.

REFERENCES:
patent: 3947876 (1976-03-01), Gray
patent: 4945427 (1990-07-01), Cunningham
patent: 5296979 (1994-03-01), Kawabe et al.
patent: 5870237 (1999-02-01), Emo et al.

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