Method of storing data on recording tape

Details Method of storing data on recording tape Method of storing data on recording tape

1989-01-05

1991-07-02

Psitos, Aristotelis M.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

Data in specific format

360 13, G11B 509, G11B 2702

Patent

active

050290223

ABSTRACT:
A method is disclosed for effecting update-in-place of data that has been recorded on tape in oblique tracks using a helical-scan recording technique. The data to be updated is recorded in a block of M tracks lying between first and second continuum each at least of N tracks where N is the worst-case number of tracks required to achieve head/track alignment. The block of M tracks comprises a first series of at least N tracks, a second series of tracks containing the data, and a third series of at least P tracks. When updating the data, the block is rewritten as a whole in a single continuum with the first track of the block being written within a distance of P tracks from the last track of the first continuum.

REFERENCES:
patent: 4677501 (1987-06-01), Saltzman et al.
patent: 4860125 (1989-08-01), van der Meer
patent: 4893199 (1990-01-01), Okada

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