1. Untethered Laser Pointer for Use with Computer Display Inventors: Sakunthala Gnanamgari, Devon, PA; Arthur Arthur Lico, PA Assignee: Info Valley Corporation, King of Prussia, PA File Date: January 4 th, 2002 Issue Date: May 4 th, 2004

2. US Patent 6729731 B2 Figure 1A-1B: A display system with a camera that detects a laser pointer. Software detects the laser pointer on the image and flashes of the pen can change the mode of operation. Claims include: Voice command operation Draw mode with a color selection Timing and position of the image of the laser Software and code for interacting with a display Timing of the image can be used for mode operation Laser pointer source is not specific Detection of different wavelengths of light source

3. Patent Overview Figure 1C-D: Flow chart of the invention Figure 1E: An example of one of the modes of operation - Laser Draw. Figure 10: Example desktop image with “modes of operation” activated with pulsing the laser pointer.

4. References Cited and Legal Updates F1: Patent 50183020 with coauthor Sakunthala Gnanamgari. Referenced by Sony Corporation, Samsung Electronics Co., Air Force, Nokia, Primax electronics etc. April 7 th, 2003 US Air Force became the new Assignee. F2: Samsung (original Assignee) US20110267260 patent in 2011. Many references of projectors with interactive displays, and remote control like devices. F1 F2

5. Questions? Gnanamgari, S., Lico, Arthur. (2004). US Patent No. 6729731 B2. google.com/patents. http://hct.ece.ubc.ca/research/laserpointer/laserpointer.jpg http://hct.ece.ubc.ca/research/laserpointer/laserpointer.jpg http://hct.ece.ubc.ca/research/laserpointer/multipointers.jpg