Digital signal transmitting system

Details Digital signal transmitting system Digital signal transmitting system

1981-08-07

1984-01-31

Smith, Jerry

Excavating

371 38, G06F 1110

Patent

active

044293909

ABSTRACT:
A digital signal is encoded for error correction, and the encoded digital signal is transmitted in M transmitting paths. The signal to be encoded occurs as N sequences of data words. A plurality n of sequences of error correcting words are generated from respective words of the N sequences delayed by respective different delay times of (D-di) words, where d.sub.i is a whole number associated with an ith one of the n error correcting word sequences. The resulting N data word sequences and n error correcting word sequences are provided with respective different total delay times, so that the total delays of the N sequences differ by an integral number D of words from one another. Blocks of the delayed N data sequences and n error correcting word sequences are formed and the blocks are cyclically distributed among the M transmitting paths. The values of M, N, n, D, and d.sub.i are selected so that the least common multiple of any two values of (d-d.sub.i) is greater than (N+n-1)D; and for any value of (D-di), (d-di) and M are relatively prime. Favorably, M is selected as 2.sup. k, and (D-d.sub.i) is odd.

REFERENCES:
patent: 3781795 (1973-12-01), Zegers
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patent: 4211997 (1980-07-01), Rudnick et al.
patent: 4238852 (1980-12-01), Iga et al.
patent: 4306305 (1981-12-01), Doi et al.
patent: 4356564 (1982-10-01), Doi et al.
IBM Technical Disclosure Bulletin, C. H. Wolff, "Multiple Channel Correction of Burst Errors", vol. 7, No. 3, Aug. 1964, pp. 190-191.

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