Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Patent
1997-05-30
2000-07-11
Ton, Dang
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
H04J 306
Patent
active
060883693
ABSTRACT:
According to the invention there is provided 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 which includes, at the transmission end, separating an incoming frame of data into a plurality of byte streams with a predefined sequence of bytes assigned to each of the streams, 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 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, the method further includes reading the escape sequence and decoding the signals in accordance with the code contained in the escape sequence.
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PMC-Sierra, Inc. Document No. PMC-960837 "Physical Layer Proposal for 1 Gbit/s Full/Half Duplex Ethernet Transmission over Single (4-pair) or Dual (8-pair) UTP-5 Cable" Nov. 11-14, 1996.
PMC-Sierra, Inc. Document No. PMC-961008 "PCS Mapping using 4LZS codes" Sep., 1996.
Dabecki Stephen
Gerson Brian
Hagglund Barry
Huscroft Charles Kevin
Little Vernon R.
PMC-Sierra Ltd.
Ton Dang
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