July 28, 1995 Toni Emerson Tracker Supplier List: Ascension Technology Corp. P. O. Box 527. Burlington, Vt. 05402, (802) 860-6440. fax (802) 860-6439 A Flock of Birds. A modular tracker with six degrees of freedom for simultaneously tracking the position and orientation of 1-30 receivers (targets) over a specified range of plus or minus three feet. Motions are tracked to accuracies of .5 degrees and. 1-inch at rates up to 140Hz. Due to simultaneous tracking, fast update rates and minimal lag occur, even when multiple targets are tracked. Uses DC fields to reduce the distorting effects of nearby conductive metals and to overcome line-of-sight blocking problems. Designed for head and hand tracking in VR games. simulations, animations, and visualizations. Price: starts at $2,809. Extended Range Transmitter (ERT). A long-range transmitter designed to boost the Flock of Birds' range to plus or minus eight feet, In conjunction with a multireceiver Flock unit, it provides full-body tracking over room-sized areas for VR walkthroughs, motion analysis. and character animation. A single-transmitter reference point eliminates calibration/alignment problems in operating over long distances. For long-range performance, multiple ERTs may be linked together. Price: $5,845. Logitech 6505 Kaiser Drive Fremont, Calif. 94555 Tel: (510) 795-8500/Fax: (510) 792-8901 2D/3D Mouse and HeadTracker. Line-of-sight ultrasonic devices for inputting 2D and 3D information into a computer. Designed for CAD, robotics, computer simulation, high-end computer graphics and animation, scientific visualization, and VR applications. Polhemus Inc. 1 Hercules Drive P. O. Box 560 Colchester, Vt. 05446, Tel: (802) 655-3159/Fax: (802) 655-1439. Isotrak II. A six-degrees-of-freedom position sensor that supports up to two receivers with a single transmitter and has an accuracy of .10-inch RMS. It may be used as a low-cost digitizer with optional stylus. Price: $2,875. Fastrak. An electromagnetic six-degrees-of-freedom tracking system that reduces data latency to four milliseconds, offers an update rate of 120Hz, and provides a range of 10 feet. Each Fastrak can accept data from up to four receivers, and up to eight systems can be multiplexed to allow up to 32 receivers. Designed for VR and high-end computer graphics/animation. Price: $5,750. InsideTRAK. A PC-insertable version of Fastrak with slightly reduced specifications. The InsideTRAK master board can handle an optional second receiver. If more receivers are required, slave boards can be added, each accommodating up to two receivers, The ultimate number of receivers is limited only by the number of ISA slots available. Price: $2,250. 3DRAW. Captures and archives the dimensions of any nonmetallic object. These objects then can be brought into your virtual world. In the CAD and computer graphics markets, 3DRAW can be used to develop true 3D databases for creating 3D wireframe or rendered images. Price: $6,500. ------------------ Sourceless Trackers: Advanced Orientation Systems, Inc. 6 Commerce Drive, Suite 2000 Cranford, NJ 07016-3515 USA Tel: 908-272-7755 Fax: 908-272-7758 Angularis Inertial Technologies Suite 2200, Bldg. 200 One Kendall Square Cambridge, MA 02139 USA Tel: 617-621-1563 Fax: 617-577-1209 Email: foxlin@cbgrle.mit.edu Forte Technologies, Inc. 1057 E. Henrietta Road Rochester, NY 14623 USA Tel: 716-427-8595 Fax: 716-292-6353 General Reality Company 170 S. Morrison Ave. San Jose, CA 95126 USA Tel: 408-289-8340 Fax: 408-289-8258 Email: genreality@aol.com Gyration, Inc. 12930 Saratoga Ave., Bldg. C. Saratoga, CA 95070 USA Tel: 408-255-3016 Fax: 408-255-9075 Precision Navigation, Inc. 1235 Pear Ave., Suite 111 Mountain View, CA 94043 USA Tel: 415-962-8777 Fax: 415-962-8776 Email: 75352.2021@compuserve.com Thorn Automation Armitage Road Rugeley Staffordshire WS15 1DR UK Tel: 44 (0) 1889-585151 Fax: 44(0) 1889-578209 VR Systems UK 17 Bracken Close North Baddesley Southampton SO52 9DL UK Tel/Fax: 44 (0) 1703-740298 Willow Technolgies Shawlands Court Newchapel Road Lingfield Surrey RH7 6BL UK Tel: 44(0) 1342-835234 Fax: 44(0) 1342-834306