Error correcting systm for serial by byte data

Details Error correcting systm for serial by byte data Error correcting systm for serial by byte data

G - Physics

06

F

354/223.1

G06F 11/10 (2006.01) H03M 13/13 (2006.01)

Patent

CA 1117661

ERROR CORRECTING SYSTEM FOR SERIAL BY BYTE DATA Abstract A system is disclosed for generating a plurality of error correcting check ECC bytes from a block of data presented to the system in serial by byte form. The system employs a plurality of ECC channels which operate in parallel with the channel generating check bytes from interleaved subsets of the data block. One channel generates an ECC parity check byte for each interleaved subset while another channel generates an ECC locator check byte for each interleaved subset of data. The ECC locator check byte for each subset represents the parity or modulo 2 sum of bit positions which are selected systematically in accordance with a predefined m sequence which is unique to each channel that generates locator check bytes. Error patterns greater than the number of bits in one byte are correctable, as are error patterns which are less than the number of bits in one byte but extend across byte boundaries of two adjacent bytes in different subsets. SA978033

325875

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