David T Sowa

US Patent:

8319819, Nov 27, 2012

Filed:

Mar 26, 2008

Appl. No.:

12/055861

Inventors:

Alan J. MacDonald - Malvern PA, US
J. William Mauchly - Berwyn PA, US
David W. Sowa - Exton PA, US
Joseph T. Friel - Ardmore PA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04N 7/14

US Classification:

348 1409, 348 1401

Abstract:

A system and method for creating a virtual round table videoconference is described. An embodiment of the system comprises a plurality of displays arranged in an arc configuration with a table to create a virtual round table. Cameras are arranged around the plurality of displays such that when a participant looks at a display with an image of a remote participant, the camera associated with the display captures an image of the participant's gaze, making eye contact with the camera. The image is displayed at the remote participant's endpoint creating the effect of eye contact between the participants. In another embodiment, audio speakers are arranged to provide directional sound such that the video source for a display and the audio source for the associated speaker are from the same endpoint.

US Patent:

8340180, Dec 25, 2012

Filed:

Mar 20, 2009

Appl. No.:

12/407907

Inventors:

Alan J. MacDonald - Malvern PA, US
J. William Mauchly - Berwyn PA, US
David W. Sowa - Exton PA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04N 11/04

US Classification:

37524012

Abstract:

Techniques are provided for managing long-term reference frames (LTRFs) for two or more video sources. A first video source is selected from a plurality of video sources. The first video source is encoded to produce an encoded video stream, where a reference frame message identifies a recent video frame as long-term reference frame (LTRF) associated with the first video stream. The process is repeated for other video streams. The LTRF associated with the first video stream is used as a reference for temporal predictive coding upon receiving a signal that the first video source has been re-selected.

US Patent:

8629893, Jan 14, 2014

Filed:

Apr 2, 2008

Appl. No.:

12/061178

Inventors:

Joseph T. Friel - Ardmore PA, US
Maurice J. Buttimer - Media PA, US
Alan J. MacDonald - Malvern PA, US
Michael A. Arnao - Collegeville PA, US
Andrew P. Weir - Malvern PA, US
David W. Sowa - Exton PA, US
J. William Mauchly - Berwyn PA, US

Assignee:

Cisco Technology, Inc. - San Jose CA

International Classification:

H04N 7/14

US Classification:

348 1401

Abstract:

A system and method for reducing blurred video caused by intra-coded IDR-frames sent in response to when a destination endpoint in a multipoint videoconference switches to a new video source. An embodiment according to the invention comprises using inter-coded temporal predictive referencing a long term reference frame (LTRF) instead of IDR-frames in a multipoint videoconference system.

US Patent:

20030158614, Aug 21, 2003

Filed:

Feb 18, 2002

Appl. No.:

10/079011

Inventors:

Joseph Friel - Ardmore PA, US
Andrew Weir - West Chester PA, US
Joseph Cotellese - Chalfont PA, US
Alan MacDonald - Malvern PA, US
J. Mauchly - Berwyn PA, US
David Sowa - Exton PA, US
Michael Arnao - Audubon PA, US

International Classification:

G06F017/00
H04B001/00

US Classification:

700/094000, 381/086000, 455/345000

Abstract:

An audio system is mounted in a vehicle and provides playback of digital audio content stored in semiconductor DRAM. Power from the vehicle's battery is constantly applied to the DRAM to retain information even when the vehicle is not operating. The audio content may be acquired by the recording of broadcast radio programs, by streaming content from a wireless Internet connection, from a CD, and/or from a wireless link to a computer. An updated playlist may be provided to the DRAM on a periodic basis or manually under user control.

US Patent:

20090207233, Aug 20, 2009

Filed:

Feb 14, 2008

Appl. No.:

12/031169

Inventors:

J. William Mauchly - Berwyn PA, US
David W. Sowa - Exton PA, US

International Classification:

H04N 7/14

US Classification:

348 1409, 348 1408

Abstract:

Systems and methods for providing camera configuration for points in a multi-point videoconference system are provided. First configuration information is determined for a first point of a multi-point videoconferencing system. Second configuration information is determined for a second point of the multi-point videoconferencing system. One or more first cameras at the first point or one or more second cameras at the second point of the multi-point videoconferencing system are reconfigured based on the first configuration information or the second configuration information.