Television – Two-way video and voice communication – User positioning
Patent
1993-12-17
1995-06-20
Groody, James J.
Television
Two-way video and voice communication
User positioning
348 17, 395 279, 381 48, H04N 714
Patent
active
054264600
ABSTRACT:
A new communication system merges a voice communication with an image communication into a single transmission channel to provide a virtual voice/video communication service over a limited channel bandwidth. A voice communication path is established between two subscriber communication stations and a desired still picture image is transmitted via the voice channel at the start of the transmission. Portions of the still image expected to be visually active during the communication, such as facial movements (e.g. the lips of the speaker), are replaced at the receiver by an idealized representative image. The voice portion of the transmission is digitally encoded and transmitted from the transmitting station to the receiving station. Synchronous activation of the idealized image (e.g. the lips) are animated by code book coefficients of the digitized speech message.
REFERENCES:
patent: 4104625 (1978-08-01), Bristow et al.
patent: 4520501 (1985-05-01), DuBruca
patent: 4841575 (1989-06-01), Welsh et al.
patent: 5313522 (1994-05-01), Slager
Erving Richard H.
Gerszberg Irwin
Rosen Daniel
Schroeder Robert E.
AT&T Corp.
Grant Chris
Groody James J.
Steinmetz Alfred G.
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