This site contains selections of my papers, presentations, and software that I have been able to make publicly available (and have gotten around to posting).
Stephen Uhler, December, 2011

• Versions of publically released software I have developed
  • Several little Android projects at code.google.com (moved to Github):
    • An enhanced SVG image View library
    • An alternative interactive logcat viewer, written in Tcl/TK
    • An audio spectrum analyzer
  • A port of the Brazil web framework to Google AppEngine. This also includes a virtual filesystem built on JSO, new templates to access Google services (e.g Picassa), and the ability to change the content and configuration of the server(s) dynamically without needing to re-deploy.
  • Solaris Audio interface for TCL. This is a TCL loadable module to provide access to Solaris audio. I wrote it years ago as part of a rewrite of PhoneStation, and just got around to getting it "released".
  • TkIaxPhone, a cross-platform soft (VOIP) telephone using the Asterisk IAX protocol written C and Tcl/Tk. It is included as part of the iaxclient library. I have a newer version packaged using freewrap, as a windows executable here, and a more recent OSX universal binary here.
  • Although I never got around to actually releasing it, An online version of SLIM, the Sunlabs Instant Messenger is (usually) running here. There is sometimes a secure version of the same thing running here . This was written for Netscape 4.X and IE 5, so the markup is a bit outdated for modern browsers. Someday I'll update it. A much older version was included as a demo in the Brazil stuff.
  • I've spent some time bemoaning the state of web programming, and the complexities of HTML/CSS/Javascript et. al. for building "applications" with. UC1 - the first prototype of the "Universal Client", is a browser that supports "UCML" (universal client markup language) instead of HTML/CSS etc. It is targeted at JSR62 - Java for hand-helds (but runs on desktops too).
  • I wrote an interactive web based interface to the Asterisk "meetme" conference, which I presented at Astricon (see below). The system is available in the "samples/conman" directory in the Brazil framework, 2.3 release. I'm slowing working on making a much improved version available at Kenai. Stay tuned.
  • The Brazil Web Application Framework ( version 2.2 developer documentation in pdf). The latest version of Brazil is currently living at Project Kenai Where you can fetch the latest downloads or checkout the source code (or the version running this site cached here).
  • SpecTcl/SpecJava (windows version 0.3) SpecTcl/SpecJava (Unix version 0.3). A graphical user interface builder, written in Tcl/TK, for Tcl, Java, Perl ...
  • Tcl/Tk HTML library. A Tcl library for rendering HTML2.0 using the TK text widget.
  • Phone Station. A telephone and interactive voice response system for Sun workstations.
  • SparcOmatic. A software MIDI synthesizer for Sun workstations, written in C, with a GUI for controlling the synthesis in real time (written in Tcl/TK).
  • IMG The Incidental Music Generation system. Originally written by Peter Langston. I repackaged and updated the system. Released by permission of Peter and Bellcore. (Someday I'll get around to posting the update to the updated version, which works with the updated-but-not-posted version of SparcOmatic).
  • The MGR window system. A complete window system written in "C", originally build for Sun-120 workstations. (Someone wrote a wikipedia entry). At its "open source" release in January 1989, it was (and probably still is) the largest post ever made on comp.sources.unix
  • Radio Free Ethernet. A small C library with applications I developed at the dawn of time to enable telephone quality audio on the Internet. that formed the inspiration for the radio command that ships with Sun's Solaris.

• Some talks (pdf)
  • On October 26, 2006, I presented ConMan, a Web based Conference Manager for Asterisk at Astricon. , and an abbreviated version called Going Deeper at the O'reilly Etel Conference. The conferencing system is available as open source: it is included as part of the Brazil Web Framework, release 2.3.
  • On Jan 24 2006, I gave an abbreviated version of the Astricon "Auto-Provisioning" talk at the O'reilly Emerging Telephony Conference.
  • I presented two talks at the 2005 Astricon conference in Anaheim: Auto-Provisioning VOIP phones with Asterisk and Experiences running Asterisk in a Corporate Environment: a Beginners Tale .
  • Phones, Firewalls and FUD. This is a talk I gave about Asterisk and VOIP at the Sunlabs Openhouse.
  • The Enterprise PDA project and the Universal Client. These are some slides I've used for quite a few internal talks; this set has been cleared for external release.
  • The BRAZIL Project: a Future Vision for the Web, and Some Tools to Get There.
    Presented at Java-One, June, 2001.
  • OpenCard and Web Applications
    Presentation slides for the OpenCard Consortium Technical Meeting, January, 1999
  • In Search of the Perfect MegaWidget
    Presentation slides, 4'th Tcl/Tk conference, July, 1996
  • Slides from the Tcl and Tk
    Advanced Tutorial, by Stephen Uhler and Brent Welch, at the January, 1996 Usenix Technical Conference.
  • I gave an invited talk at the Summer 1993 Usenix Technical conference on elementary Digital Signal Processing (DSP). The slides for the presentation are here: DSP 101, Sound programming for your Workstation . This talk used SparcOmatic to demonstrate the DSP techniques.

• Some papers (pdf)
  • Design and architecture of the Brazil Web Application Framework (intro)
    Sun Labs 10-year Retrospective, October, 2001.
  • In Search of the Perfect Megawidget (cached)
    1996 Usenix Tcl/TK workshop
  • A Graphical User Interface Builder for TK
    Abstract of a paper presented at The 1995? TCL user's group conference that describes an early version of SpecTcl.
  • PhoneStation, Moving the Telephone onto the Virtual Desktop
    1993 Usenix Technical conference, January, 1993. (See also the PhoneScript reference manual). A copy of the slides for (a slightly different) presentation of the paper are here .
  • $HOME MOVIE - Tools for Building Demos on a Sparcstation
    Usenix Technical Conference, January, 1991.
  • MUI: A Windows Based User Interface for Multi-Media Mail.
    Bellcore Special Report SR-OPT-002130, November, 1991.
  • MTX - a Shell that Permits Dynamic Rearrangement of Process Connections and Windows
    Usenix Technical Conference, January. 1990.
  • Mgr Window System Reference Manual October, 1994.
  • The Design and Architecture of the Mgr Window system
    1991?^*

• Articles I have written
  • PracTCL Programming Tips: Putting Widgets in their Place
    Linux Journal, August, 1995
  • PracTcl Programming Tips: Debugging Tcl Scripts, or Real Programmers Use puts
    Linux Journal, October, 1995
  • PracTcl Programming Tips: It's all a matter of Timing
    Linux Journal, December, 1995
  • Event-based servers in Tcl (or cached here) The source code for the web-server described in the article is here.
    Dr. Dobbs Journal, September, 1999

• Patents
  • 6,889,329 Adding secure external virtual memory to smart cards
  • 6,877,094 Method and apparatus for authentication and payment for devices participating in Jini communities.
  • 6,748,532 Universal smart card access system.
  • 6,694,259 System and method for delivering parking information to motorists.
  • 6,308,198, 5,845,075 Method and apparatus for dynamically adding functionality to a set of instructions for processing a web document based on information contained in the web document.
  • 6,286,060 Method and apparatus for providing modular I/O expansion of computing devices.
  • 7,089,560 Architecture for building web applications.
  • Web guided collaborative audio (US8526587).
    This was kind'a cool, but you can't tell from the patent writeup. I incorporated Conman (and Asterisk) into a Wiki. When you navigated to a particular topic, you would automatially enter an audio conference related to that topic, along with anyone else who was on the same page. The VOIP client was written in javascript, so no special sauce was required. If you were the only one in your topic, you could hear "murmurs" of conversations in nearby topics, encouraging you to join them. At least that was the plan.
  • 10491581Wireless Network Access.

• Other Links
  • A Walk Through the Sun Labs Open House. This has a paragraph explaining some of the telephony stuff I've been playing with.
  • It's Come to This - http://www.myfridge/check_ice.html (cached)
    Feature story, Sun Microsystems Laboratories. March, 2001 (I have some pictures here).
  • Sun Research Brazil Project
    Dr. Dobbs, technetcast, November, 2000
  • Brazil Project: The Future of Web Application Development
    Feature Story, Sun Microsystems Laboratories.A August, 2000. (also see here)
  • How handlers work in Web-accessible home automation
    The first of a five part series in JavaWorld magazine, beginning May , 2000.
  • SpecTcl at source forge, the "community" version of the SpecTcl GUI builder.
  • Hello? Can You Here Me?Abstract for a presentation on incorporating real-time audio onto the Web. (1994) [cached copy]
  • MGR HOWTO Information on MGR for Linux.
  • Here is an article written about MGR (cached) in the VITA Journal, where

    "the MGR graphic system has been ... Submitted to the VITA Standards Organization as a standard graphic system for embedded applications."

  • I co-authored the original version of The TCL web server. with Brent Welch; It has since been extended by many.
• Other Activities
  • I wrote the firmware for the Atmega/88 microcontroller that lives on the SunSpot demo sensor board. Some of my SunSpot demos are here.
  • I've been tinkering with the Lively Kernel, and hope to be able to spend more time with it.
  • I served on the technical advisory board for Niku Corporation for a while, and for Volunteer Match.
  • I designed and built the original NetDay web site. Although that site is long gone, It had a nifty GIS system that allowed you to drill down on a map of the USA to any public elementary school in the country. You can sort-of get the idea here. Here is set of images that demonstrate drilling down through a series of steps to an elementary school in Manhattan.

(This server is running Brazil on a Raspberry PI4)