ATM and Ptolemy Classic

Remote places to go
  • Yahoo ATM page
  • The ATM Forum
  • Local Places to go

  • TCP Simulator for Ptolemy 0.5.2

  • Ptolemy Demos

    Ptolemy 0.7.1

    Ptolemy 0.7.1 contains two SDF ATM demos in the Communications Demo palette.
    lossySpeech
    Illustrate the effect on speech of a zero-substitution policy in a network (such as ATM) with 48 byte packets and a variable loss probability. Note that this demo requires audio capability and will probably only work on Sun workstations.
    Images: PDF - PNG
    Textual Description (The textual description is in ptcl, see question 4.2 of the Ptolemy Classic FAQ)
    lossySpeechPrevCell
    Illustrate the effect on speech of a previous cell substitution policy in a network (such as ATM) with 48 byte packets and a variable loss probability. Note that this demo requires audio capability and will probably only work on Sun workstations.
    Images: PDF - PNG
    Textual Description
    The Discrete Event (DE) Domain contains blocks for cell creation and access in the Networking Palette. There are also a few networking demonstrations.

    See the DE chapter of the Ptolemy User's Manual

    The images of the models were generated with

    cd $PTOLEMY/src/domains/sdf/demo
    $PTOLEMY/bin/prfacet -TOFILE /tmp/lossySpeech.ps -N -n -p -x lossySpeech
    pstoimg /tmp/lossySpeech.ps
    distill /tmp/lossySpeech.ps
    
    Note that the original models are in color, but due to software aging, when we generated the images in color, the background of each actor was black.

    Ptolemy 0.5.2

    Ptolemy 0.5.2 contained other DE ATM demos that were removed with the release of Ptolemy 0.6. These demos are described in the 0.5.2 DE User's Manual chapter.

    Ptolemy 0.5.2 also contained the Communicating Processes (CP) and Message Queuing (MQ) domains. The MQ domain had a few cell based demos, which are described in 0.5.2 MQ User's Manual chapter.

    The CP and MQ domains are not in Ptolemy 0.6 and later, see Chapter 4, Introduction to Domains, of the Ptolemy User's Manual.


    Papers

    The following papers by former group members explicitly mention ATM in the title. Unfortunately, we have not found online versions of these papers.
  • G. S. Walter, ATM, Speech Coding, and Cell Recovery, MS Report, EECS Dept., University of California, Berkeley, CA 94720, December, 1992.
  • P. Haskell and D.G. Messerschmitt, ``Recovery of Motion-Compensated Video Affected by ATM Cell Loss, Proc. Int. Conf. on Accoustics, Speech, and Signal Processing, San Francisco, March 1992.

  • Other Resources

    Try searching the following resources for ATM:
  • The Ptolemy Web site
  • The Ptolemy Hackers Mailing List