Exchange with error correction

Details Exchange with error correction Exchange with error correction

1986-10-22

1988-04-12

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

H04Q 1104

Patent

active

047379510

ABSTRACT:
A switching exchange in which data on each incoming line are applied to an encoder which produces redundant code words therefrom. The switching matrix is divided into n sub-switching matrices which each transmit a different sub-code word. The outputs of the sub-switching matrices are connected to a decoder which corrects erroneous data words and in addition indicates the occurrence of a fault. Each sub-switching matrix may have its own setting processor receiving identical setting information from a central switching processor. In the event of failure of a sub-switching matrix the decoder can correctly restore the data words. It therefore is possible to effet repair simply replacing the defective sub-switching matrix without switching-off the exchange.

REFERENCES:
patent: 3886318 (1975-05-01), Charransol et al.
patent: 4074077 (1978-02-01), Charransol et al.
patent: 4456987 (1984-06-01), Wirsing
patent: 4489412 (1984-12-01), Duplessis et al.
patent: 4535442 (1985-08-01), Maddern et al.
patent: 4608684 (1986-08-01), Upp

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