PATENTS

U.S. Patent: 6,515,690. Feb. 4, 2003
“Systems And Methods Providing An Interface For Navigating Dynamic Text”

U.S. Patent: 6,262,662. Jul 17, 2001
“Systems and Methods that Detect Proximity Information Using Electric Field Sensing Devices and a Page Identification using Embedded Identification Tags”

U.S. Patent: 6,239,801 May 29, 2001
“Method and System for Indexing and Controlling the Playback of Multimedia Documents”

U.S. Patent: 5,986,655 Nov 16, 1999
“Method and System for Indexing and Controlling the Playback of Multimedia Documents”

U.S. Patent: 5,717,879 Feb 10, 1998
“System for the Capture and Replay of Temporal Data Representing Collaborative Activities.”

US Patent: 5,692,213 Nov 25, 1997
"Method for Controlling Real-Time Presentation of Audio/Visual Data on Computer System"                     

US Patent: 5,239,373   Aug 24, 1993
"Video Computational Shared Drawing Space"              

US Patent: 4,987,492  Jan 22, 1991
"User interface control for communications system"