H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 1/00 (2006.01) H04B 7/185 (2006.01) H04L 29/08 (2006.01) H04N 7/20 (2006.01) H04H 1/00 (2006.01) H04H 1/10 (2006.01) H04N 7/16 (2006.01) H04N 7/173 (2006.01)
Patent
CA 2121592
An information broadcasting system (100) provides a large number of subscribers access to a large amount of information using one or more satellite transmission channels. The system (100) can also use cable television transmission channels. A program supplier station (102) stores an information database (112) and tags all the information in the database with indices so as to form a single hierarchical structure which encompasses the entire information database (112). Portions of the information database (112) are transmitted often, at least once per day, in order to provide the basic subscriber with information need to access the remainder of the database (112). The information provided by the basic subscriber service, which will typically include at least 50 gigabytes of data, is available to all subscribers without requiring two way communications between the subscribers and the program supplier station. Using a tiered system for scheduling transmission of the 50 gigabytes or so of information included in the basic subscriber service, as well as an intelligent subscriber request anticipation scheme for retrieving information before the subscriber asks for it, the present invention provides subscribers with reasonably quick access to all the contents of the large database while using only a modest amount of bandwidth.
Finisar Corporation
Ridout & Maybee Llp
LandOfFree
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