Multiplex communications – Wide area network – Packet switching
Patent
1993-11-10
1996-01-02
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 953, 3701101, 348 7, 348 13, H04N 7173
Patent
active
054815428
ABSTRACT:
A digital video, audio and data distribution system which enables a set-top terminal (STT) associated with a customer's television set or other information presentation device to request interactive digital video, audio and data services from a service provider (SP) through the use of control system messages transmitted via a hi-directional signalling path. The requested interactive service is transmitted from the service provider over a portion of the bandwidth of a broadband transmission network which is dedicated to interactive digital services. A Video Session Connection (VSC) is provided for setting up and maintaining interactive sessions between the set-top terminal and a video service provider during the time the interactive programming is provided to the customer. The set-top terminal and service provider establish the Video Session Connection via a two-way signalling path within the bandwidth of the transmission medium into the customer's home. Applications of the system of the invention include "movie on demand" services where the set-top terminal not only requests a movie to be transmitted from the service provider for immediate transmission, but also the bi-directional command channel permits the set-top terminal to control the video presentation by sending commands such as Play, Pause, Fast-Forward and the like to the Service Provider while the movie is being transmitted. Other applications of the invention include on-line data retrieval services, shop at home services and other services which require the use of an interactive connection.
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Addington Timothy H.
Logston Gary L.
Wall, Jr. William E.
Wasilewski Anthony J.
Jung Min
Olms Douglas W.
Scientific-Atlanta, Inc.
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