Nortel Networks Corporation

Galazar Networks, Inc.

Erik Trounce

Richard DeBoer

David Kirk

Matthew Coakeley

Nizar Rida

Allan Bogdan Isfan

Michael Vandegriend

Douglas Harold Patterson

Systems and methods for encoding and decoding serial bit streams are provided. A parity bit is computed for each nibble, with the parity alternating between odd and even in a regular manner for normal data, and with parity having predetermined different patterns to indicate the start of a packet or the end of a packet. Special code words indicate the idle state and an error state. In some systems an extra vertical parity channel is provided in association with a group of data channels, the vertical parity channel effectively providing a protection channel.

Systems and methods for high speed serial encoding and decoding for data and control interfaces

A method and apparatus for combining data from first and second separate data transceivers onto a common data link. The method involves transceiving data at the first data transceiver using the common communications link, at regular intervals of time, and monitoring the common communications link to identify idle periods during which data associated with the first data transceiver is not present. The second data transceiver is synchronized with a corresponding transceiver in communication with the common communications link and communications are established between the second data transceiver and the corresponding transceiver, during the idle periods.

Method and apparatus for communicating data between first and second pairs of transceivers communicating on a common communications link

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Nepean, Canada

Erik Trounce