Interactive television terminal responsive to user commands whic

Details Interactive television terminal responsive to user commands whic Interactive television terminal responsive to user commands whic

1994-04-06

1997-09-16

Peng, John K.

Television

Two-way video and voice communication

User positioning

348 10, 348 12, 455 51, 455 62, H04N 714, H04N 710

Patent

active

056685920

ABSTRACT:
In an interactive TV system, information which can be left relatively unchanged for substantial periods of time is stored in CD-ROM at each subscriber site. Information which changes between CD-ROM replacements is transmitted from the head end to the subscriber sites in a recurring, or recycling data stream. Individual subscriber sites select the information they desire from the data stream and reproduce it, together with any related information stored in CD-ROM. Transactions based on the so-reproduced information are activated by telephone line transmissions from the subscriber sites.

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