发明名称 |
Interactive information services control system |
摘要 |
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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申请公布号 |
US5481542(A) |
申请公布日期 |
1996.01.02 |
申请号 |
US19930149929 |
申请日期 |
1993.11.10 |
申请人 |
SCIENTIFIC-ATLANTA, INC. |
发明人 |
LOGSTON, GARY L.;WASILEWSKI, ANTHONY J.;ADDINGTON, TIMOTHY H.;WALL, JR., WILLIAM E. |
分类号 |
H04J3/16;H04J14/02;H04N7/167;H04N7/173;H04N7/22;H04Q11/04;(IPC1-7):H04N7/173 |
主分类号 |
H04J3/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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