Interleave type error correction method and apparatus

Details Interleave type error correction method and apparatus Interleave type error correction method and apparatus

1996-04-12

1998-09-15

Elmore, Reba I.

Excavating

371 374, 371 378, 371 41, G06F 1110

Patent

active

058090428

ABSTRACT:
An improvement in an interleave type error correction method in which more errors can be corrected with less correction codes is provided. Array patterns of code words constituting the information code is form by interleaving. The array patterns comprise a plurality of sequences of a plurality of code words. Correction codes are added to the sequences so that a total number of the correction codes added to a selected sequence is greater than a total number of the correction codes added to the other sequences. An error correction is executed in the selected sequence by identifying a position of an error as a consecutive error code position, when the selected sequence is determined to contain said error having a characteristic feature that the error extends over other sequences. A code word of a position corresponding to said consecutive error code position of the selected sequence among code words in the other sequences is recognized as an erasure. Error correction in the other sequences are executed by a method of correcting a disappearance error based on information on the recognized erasure. In addition, an encoder, decoder, and data communication system which implements the error correction method are provided.

REFERENCES:
patent: 5051998 (1991-09-01), Murai et al.
patent: 5224106 (1993-06-01), Weng
patent: 5392299 (1995-02-01), Rhines et al.
patent: 5546409 (1996-08-01), Karasawa

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