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Title: Method and apparatus for communicating computer data from one point to another over a communications medium

Abstract

The present invention is directed toward a communications channel comprising a link level protocol, a driver, a receiver, and a canceller/equalizer. The link level protocol provides logic for DC-free signal encoding and recovery as well as supporting many features including CRC error detection and message resend to accommodate infrequent bit errors across the medium. The canceller/equalizer provides equalization for destabilized data signals and also provides simultaneous bi-directional data transfer. The receiver provides bit deskewing by removing synchronization error, or skewing, between data signals. The driver provides impedance controlling by monitoring the characteristics of the communications medium, like voltage or temperature, and providing a matching output impedance in the signal driver so that fewer distortions occur while the data travels across the communications medium.

Inventors:
 [1];  [2];  [1];  [3];  [1];  [3];  [1];  [1];  [3];  [4]
  1. Chippewa Falls, WI
  2. Sumner, WA
  3. Eau Claire, WI
  4. Altoona, WI
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
913096
Patent Number(s):
7248635
Application Number:
09/620,373
Assignee:
Silicon Graphics, Inc. (Sunnyvale, CA)
Patent Classifications (CPCs):
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04L - TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
97 MATHEMATICS AND COMPUTING

Citation Formats

Arneson, Michael R, Bowman, Terrance L, Cornett, Frank N, DeRyckere, John F, Hillert, Brian T, Jenkins, Philip N, Ma, Nan, Placek, Joseph M, Ruesch, Rodney, and Thorson, Gregory M. Method and apparatus for communicating computer data from one point to another over a communications medium. United States: N. p., 2007. Web.
Arneson, Michael R, Bowman, Terrance L, Cornett, Frank N, DeRyckere, John F, Hillert, Brian T, Jenkins, Philip N, Ma, Nan, Placek, Joseph M, Ruesch, Rodney, & Thorson, Gregory M. Method and apparatus for communicating computer data from one point to another over a communications medium. United States.
Arneson, Michael R, Bowman, Terrance L, Cornett, Frank N, DeRyckere, John F, Hillert, Brian T, Jenkins, Philip N, Ma, Nan, Placek, Joseph M, Ruesch, Rodney, and Thorson, Gregory M. Tue . "Method and apparatus for communicating computer data from one point to another over a communications medium". United States. https://www.osti.gov/servlets/purl/913096.
@article{osti_913096,
title = {Method and apparatus for communicating computer data from one point to another over a communications medium},
author = {Arneson, Michael R and Bowman, Terrance L and Cornett, Frank N and DeRyckere, John F and Hillert, Brian T and Jenkins, Philip N and Ma, Nan and Placek, Joseph M and Ruesch, Rodney and Thorson, Gregory M},
abstractNote = {The present invention is directed toward a communications channel comprising a link level protocol, a driver, a receiver, and a canceller/equalizer. The link level protocol provides logic for DC-free signal encoding and recovery as well as supporting many features including CRC error detection and message resend to accommodate infrequent bit errors across the medium. The canceller/equalizer provides equalization for destabilized data signals and also provides simultaneous bi-directional data transfer. The receiver provides bit deskewing by removing synchronization error, or skewing, between data signals. The driver provides impedance controlling by monitoring the characteristics of the communications medium, like voltage or temperature, and providing a matching output impedance in the signal driver so that fewer distortions occur while the data travels across the communications medium.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {7}
}

Patent:

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Works referenced in this record:

Performance of the RamLink memory architecture
conference, January 1994

  • Gjessing, S.; Stone, G.
  • Proceedings of the Twenty-Seventh Annual Hawaii International Conference on System Sciences, Proceedings of the Twenty-Seventh Hawaii International Conference on System Sciences HICSS-94
  • https://doi.org/10.1109/HICSS.1994.323176

110-GB/s simultaneous bidirectional transceiver logic synchronized with a system clock
journal, January 1999


RamLink: a high-bandwidth point-to-point memory architecture
conference, January 1992


Time-domain response of multiconductor transmission lines
journal, June 1987


A 900 Mb/s bidirectional signaling scheme
journal, January 1995