Bell Communications Research, Inc.

John D Robbins

Antonio Fernandez

E Scott Soper

Martin J Jaquez

Eric J Addeo

Gennady Shtirmer

Didier J Le Gall

Hugo P Gaggioni

Hugo Pineiro Gaggioni

A teleconferencing system 100 is disclosed having a video camera for generating a video signal representative of a video image of a first station B. A microphone array 150, 160 is also provided in the first station for receiving a sound from one or more fixed non-overlapping volume zones 151, 152, 153, 154, 155, 156, 157, 158, 159, into which the first station is divided. The microphone array is also provided for generating a monochannel audio signal 170 representative of the received sound and a direction signal indicating, based on the sound received from each zone, from which of the volume zones the sound originated. The teleconferencing system also includes a display device 120A at a second station A for displaying a video image of the first station. A loudspeaker control device 140 is also provided at the second station for selecting a virtual location 121 on the displayed video image depending on the direction signal, and for generating stereo sound from the monochannel audio signal which stereo sound emanates from the virtual location on the displayed video image.

Sound localization system for teleconferencing using self-steering

A system for combining a plurality of video signals and various forms of still imagery such as text or graphics into a single high resolution display is disclosed. The inventive system utilizes a multiport memory and a key based memory access system to flexibly compose a multiplicity of video signals and still images into a full color high definition television display comprising a plurality of overlapping windows.

Memory system for high definition television display

A system for combining a plurality of video signals and various forms of still imagery such as text or graphics into a single high resolution display is disclosed. The invention system utilizes a multiport memory and a key based memory access system to flexibly compose a multiplicity of video signals and still images into a full color high definition television display comprising a plurality of overlapping windows.

Raster assembly processor

A method for enabling format independent communication of visual information between diverse computers, work stations, and terminals is disclosed. The inventive method relies on a universal format which can be used to represent the data comprising any raster display. Illustratively, the data comprising a raster display is first translated from the native format of an originating system into the universal format. When in the universal format, it is possible to convert the raster from one type to another (e.g., from color to pseudo-color or grey to pseudo-color) so that the raster can be displayed by a receiving system which comprises equipment different from that of the originating system.

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Mountain Lakes, NJ, United States of America

John D Robbins