Computer Graphics Systems Development Corporation   Booth 905   P.Y. Cheng 2483 Old Middlefield Way, Suite 140 Mountain View, California 94043 USA +1.650.903.4920 pcheng@cgsd.com www.cgsd.com   CGSD produces custom virtual reality systems for research, training, and entertainment. It also publishes Real Time Graphics and sells texture tools and patterns, automatic database software, and head-mounted displays.