Method of duplicating data on a magnetic disk with reduced dupli

Details Method of duplicating data on a magnetic disk with reduced dupli Method of duplicating data on a magnetic disk with reduced dupli

1994-08-26

1995-03-28

Psitos, Aristotelis

Dynamic magnetic information storage or retrieval

Record copying

360 721, 360 50, G11B 586

Patent

active

054022703

ABSTRACT:
A method for duplicating data on a rotating magnetic disk in sectors on concentric tracks so that the sectors are aligned with each other from track to track and referenced to an index mark. The index mark is sensed as the disk rotates. The time elapsed between sensed index marks is counted to define the angular displacement of the disk. A magnetic head is moved successively to the tracks on the disk. Data to be duplicated is recorded in sequence, sector by sector, on the respective tracks beginning at different offsets from the index mark such that recording begins with the next sector encountered after the head arrives at the respective tracks.

REFERENCES:
patent: 4310861 (1982-01-01), Kashio
patent: 4811317 (1989-03-01), Barnard et al.
patent: 5068755 (1991-11-01), Hamilton et al.
patent: 5087996 (1992-02-01), Williams et al.

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