Method and apparatus for data interleave with pseudo-randomized

Details Method and apparatus for data interleave with pseudo-randomized Method and apparatus for data interleave with pseudo-randomized

1990-02-06

1991-11-26

Psitos, Aristotelis

Pulse or digital communications

Spread spectrum

Direct sequence

360 381, 360 48, H04L 706, H04N 578, G11B 509

Patent

active

050688782

ABSTRACT:
In formatting a digital data stream for interleaved recording with included resynchronization sequences inserted into the data stream, rather than recurrently recording the resynchronization sequences at the boundaries of the interleave blocks or recording many resynchronization sequences throughout the data, the present invention teaches staggered recording of the resynchronization sequences throughout the page of interleaved code words in a pseudo-random fashion. This staggering of the resynchronization sequences throughout the interleave blocks "randomizes" the errors due to tape drop outs so that errors are more uniformly distributed among the positions in the code words, and attendantly, are more likely to be correctable.

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