Reversible multitrack magnetic tape storage system with multifra

Details Reversible multitrack magnetic tape storage system with multifra Reversible multitrack magnetic tape storage system with multifra

1996-07-12

1999-05-25

Elmore, Reba I.

Excavating

371 374, 371 30, 39518204, H03M 1300

Patent

active

059075643

ABSTRACT:
A data storage system having a plurality of parallel magnetic tape tracks. Error protection is based on a frame-wise product code having first code words distributed over a single track and second code words distributed cyclically among all tracks. In a read mode the system drives the tape in a first closed servo loop synchronized by the data rate, and in a write mode in a second open loop operating at a preset tape speed. The tape driver has a bidirectional buffer for framewise buffering data between the tape and an output, while interchangeably presenting either an amble frame (synchronizing patterns) or a data frame to the tape. The system enables handling of data framewise bidirectionally by the tape driver. A third layer of error protection is provided by a Reed-Solomon code operating on a uniform symbol series across a plurality of successive frames without reference to the amble frames, and assignment of all redundant symbols thereby produced to exclusive-redundancy frames.

REFERENCES:
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patent: 5461486 (1995-10-01), Uchida
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patent: 5517484 (1996-05-01), Takagi et al.
patent: 5627935 (1997-05-01), Kim
patent: 5646806 (1997-07-01), Griffith et al.
patent: 5696774 (1997-12-01), Inoue et al.

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