Excavating
Patent
1989-04-27
1992-04-28
Atkinson, Charles E.
Excavating
371 391, 371 401, G06F 1110
Patent
active
051093855
ABSTRACT:
A record medium, such as a magnetic tape, optical disk, magnetic disk, and the like stores data signals and error redundancy signals. Resynchronization signals are interleaved between the recorded signals such that the error redundancy signals are usable to correct signals recorded between such interposed resynchronization signals wherein no error redundancy signals are recorded. Error pointing redundancy signals are recorded between all of the resynchronization signals for pointing to signals in error for enhancing the error correction. Such error pointing signals can be cyclic redundancy check (CRC) signals. Controls for taking advantage of the above-described arrangement are also described. Reframing and clock synchronization controls are also disclosed.
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Patterson et al. "A Case for Rodundant Arrays of Inexpensive Disks (RAID)", 88ACM, 3-88.
Karp James M.
Roach Steven W.
Schneider Richard C.
West Stephen C.
Atkinson Charles E.
International Business Machines - Corporation
Somermeyer H. F.
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