Format for storing data on magnetic media

Details Format for storing data on magnetic media Format for storing data on magnetic media

1985-02-08

1986-04-22

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

360 49, 360 50, G11B 509

Patent

active

045846162

ABSTRACT:
Digitally encoded information is stored on a data track in an improved format characterized by a leader field followed by a data field and a trash gap at the end of the data field. On a rotatable disk storage medium, the leader field has a randomly selected starting point which may change each time a new set of data is recorded on the track. The leader field contains encoded control information which signals the beginning of the ensuring data field. The trash gap may contain spurious data remaining from a previously recorded set of data and is maintained shorter than the leader field at all permissible rotational speeds of the disk to prevent spurious data on the trash gap from being erroneously recognized as valid leader field control information.

REFERENCES:
patent: 3399394 (1968-08-01), Smith
patent: 3711844 (1973-01-01), Irwin
patent: 4081844 (1978-03-01), Devore et al.
patent: 4310861 (1982-01-01), Kashio
patent: 4345280 (1982-08-01), Blagaile et al.
patent: 4366512 (1982-12-01), Janak et al.

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