Method for error detection

Details Method for error detection Method for error detection

1987-05-26

1988-12-27

Smith, Jerry

Excavating

371 38, G06F 1110

Patent

active

047946024

ABSTRACT:
This invention provides an error detecting method, wherein upon decoding a data signal which is formed by such a manner that a data word D is formed of a predetermined number of bits of digital signals, a data block is formed of a predetermined number of the data words D which are successive on a recording or transmission medium, one error check code CRC is provided for a sequence within the data block and another error check code for another series which is different from said series within said data block is provided for a sequence of said data blocks all of erroneous data words detected by another error check code P are regarded as being erroneous. By this method, the erroneous data word can be positively detected.

REFERENCES:
patent: 4477903 (1984-10-01), Schouhamer Immink
patent: 4562578 (1985-12-01), Odaka
patent: 4593394 (1986-06-01), Tomimitsu
patent: 4604747 (1986-08-01), Onishi
patent: 4649542 (1987-03-01), Nishimura
patent: 4677622 (1987-06-01), Okamoto
patent: 4719628 (1988-01-01), Ozaki
patent: 4726028 (1988-02-01), Himeno
patent: 4750178 (1988-06-01), Sako

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