H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/24, 379/4
H04N 7/173 (2006.01) H04N 1/00 (2006.01) H04N 1/21 (2006.01)
Patent
CA 2015912
An interactive television system, comprises a centrally located presentation system for transmitting video presentations via a television distribution network over at least one channel on the network in which each presentation includes a plurality of individual images and an optional audio segment, and a plurality of remotely Located terminals for receiving the video presentations transmitted over said network and for transmitting information to said presentation system via telephone lines designating desired presentations to be transmitted. The system comprises: a storage system for storing, in digital form individual images and audio segments; an audio system for receiving the information transmitted from said remote terminals via the telephone lines and for retrieving audio segments from said storage system and transmitting said audio segments to the remote terminals via said telephone lines; a video system including means for retrieving individual images stored in said storage system, means for encoding each image with an address identifying at least one of said terminals, and means for transmitting said encoded images via said network; and means responsive to the information received by said audio system for controlling said audio system and said video system to retrieve selected audio segments and images, respectively, from said storage system and to transmit the retrieved segments and images to designated terminals; each of said remote terminals comprising: means for receiving television signals transmitted via said network; means for examining video images transmitted over said one channel to determine whether they are encoded with a designated address and for storing individual images encoded with said designated address; means for retrieving an image stored in said storing means at a standard television frame rate and forming a continuous, still-frame, video signal; means for connecting said terminal to a telephone line; means for transmitting information to said presentation system via the telephone line in response to viewer commands; means for receiving audio segments transmitted via the telephone lines from said presentation system; and means for combining said continuous, still-frame, video signal with received audio segments to form a composite television signal for presentation to a television receiver.
Coumans Peter
Lodberg Allan E.
Mcnorgan Richard
Pocock Terrence H.
Cableshare Inc.
Gowling Lafleur Henderson Llp
Tvworks Llc
LandOfFree
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