Arrangement for recording clock run-in codewords at the beginnin

Details Arrangement for recording clock run-in codewords at the beginnin Arrangement for recording clock run-in codewords at the beginnin

1991-06-06

1993-09-14

Pascal, Robert J.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

360 48, 375 19, G11B 509

Patent

active

052454835

ABSTRACT:
In a helical scan recorder, a sequence of n-bit first codewords (W.sub.1) and n-bit second codewords (W.sub.2) if any, are stored in second track parts (TP2) which form the beginning of the tracks (T.sub.1, T.sub.2 . . . ), these codewords having a form so that both a PR1 detection and a PR4 detection is possible on reproduction. The second codewords are the inverses of the first codewords. An optional form of the first codeword may be: 0001110001110000011100011.

REFERENCES:
patent: 4390801 (1983-06-01), Kurata et al.
patent: 4851837 (1989-07-01), Baldwin
patent: 4855742 (1989-08-01), Verboom
patent: 5128811 (1992-07-01), Van Gestel
patent: 5136436 (1992-08-01), Kahlman
patent: 5142421 (1992-08-01), Kahlman et al.

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