Patent ID: 6088369
Filing Date: 2000-07-11
Classification: H04L

Abstract:
A method of signal coding that permits high speed data transmission over multiple pairs of UTP-5 cable from a transmission end to a receiving end, comprising:at the transmission end:(a) separating an incoming frame of data into a plurality of byte streams with a predefined sequence of bytes assigned to each of said streams;(b) encoding every 2 bits of data in each stream into one of 4 logical voltage levels forming a symbol or quat thereby reducing the symbol or baud rate by 50%; and(c) inserting an escape sequence into one or more of the streams consisting of a sequence of zero's followed by a control code to indicate a transition from one state to another;at a receiving end:(d) reading said escape sequence; and(e) decoding said streams in accordance with the code contained in said escape sequence.