Multimedia collaboration system

LF Ludwig, JC Lauwers, KA Lantz, GJ Burnett… - US Patent …, 2001 - Google Patents
5,010,399 4/1991 Goodman et al.. FOREIGN PATENT DOCUMENTS 5,014,267 5/1991
Tompkins et al.. 5,027,400 6/1991 Baji et al.. O 041902 12/1981 (EP). 5,042,062 8/1991 Lee …

System for real-time communication between plural users

LF Ludwig, JC Lauwers, KA Lantz, GJ Burnett… - US Patent …, 2008 - Google Patents
US7433921B2 - System for real-time communication between plural users - Google Patents
US7433921B2 - System for real-time communication between plural users - Google Patents …

Videoconferencing hardware

LF Ludwig, JC Lauwers, KA Lantz, GJ Burnett… - US Patent …, 2003 - Google Patents
(57) ABSTRACT A teleconferencing apparatus and System consisting of a unitary housing.
The housing includes audio and Video capture capabilities for capturing Video images and …

Dedicated echo canceler for a workstation

LF Ludwig, JC Lauwers, KA Lantz, GJ Burnett… - US Patent …, 2003 - Google Patents
(62) Division of application No. 09/702.737, filed on Nov. 1, other multimedia information,
even after wide area 2000, which is a division of application No. 08/994.848, filed on Dec …

Method for real-time communication between plural users

LF Ludwig, JC Lauwers, KA Lantz, GJ Burnett… - US Patent …, 2007 - Google Patents
A method of real-time communication between a plurality of users each with respective
communication devices having associated displays, the method comprising the steps of …

Method and system for log-in-based video and multimedia calls

LF Ludwig, JC Lauwers, KA Lantz, GJ Burnett… - US Patent …, 2002 - Google Patents
(54) METHOD AND SYSTEM FOR 4,054,908 A 10/1977 Poirier et a1. LOG-IN-BASED
VIDEO AND MULTIMEDIA 4,210,927 A 7/1980 Yllmde et a1~ CALLS 4,441,180 A 4/1984 …

Simulcasting digital video programs for broadcast and interactive services

B Kostreski, A Schneider - US Patent 5,729,549, 1998 - Google Patents
To provide interactivity. a public wireless packet data net work is combined with a
broadband digital broadcast net work. In the preferred embodiment, the broadcast network …

Video conferencing on existing UTP infrastructure

LF Ludwig, JC Lauwers - US Patent 6,437,818, 2002 - Google Patents
US6437818B1 - Video conferencing on existing UTP infrastructure - Google Patents
US6437818B1 - Video conferencing on existing UTP infrastructure - Google Patents Video …

System for real-time communication between plural users

LF Ludwig, JC Lauwers, KA Lantz, GJ Burnett… - US Patent …, 2006 - Google Patents
A system for real-time, communication between a plurality of separated users comprising at
least one communication device for use by each of the plurality of users and having an …

Methods and systems for multimedia communications via public telephone networks

LF Ludwig Jr - US Patent 5,751,338, 1998 - Google Patents
Methods and systems for providing multimedia telecommunication services to multimedia
workstations communicating with a multimedia central office which includes a digital switch …