Distributed database system and database receiver therefor
First Claim
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1. A distributed database system comprising:
- a central station for accumulating and distributing data on a database,a plurality of receiver stations for receiving said data and selectively making available at least portions of said data in accordance with the demands of a user of a said receiver station; and
transmission means for encoding and transmitting said sequential data stream, which is delivered embedded within television signals;
wherein said central station comprises;
a data store for storing accumulated data from said database, ready for distribution;
processing means for extracting said data from said data store and generating a sequential data stream therewith for distribution; and
transmission means for encoding and transmitting said sequential data stream; and
a said receiver station comprises;
decoder means to receive and decode transmitted data so as to reconstitute said database data therefrom;
input means for a user of said receiver station to input user commands in respect of the demands of the user to said receiver station;
receiver processing means for constituting a database from said data having regard to said user commands;
memory means for storing data for constituting said database; and
means for communicating selected data in direct response to said user commands.
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Abstract
A distributed database system includes a central station for accumulating and distributing data on a database, and a plurality of receiver stations that receive the data and selectively make available at least portions of the data in accordance with the demands of a user. A transmitter encodes and transmits the sequential data stream for delivery embedded within television signals.
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Citations
38 Claims
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1. A distributed database system comprising:
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a central station for accumulating and distributing data on a database, a plurality of receiver stations for receiving said data and selectively making available at least portions of said data in accordance with the demands of a user of a said receiver station; and transmission means for encoding and transmitting said sequential data stream, which is delivered embedded within television signals; wherein said central station comprises;
a data store for storing accumulated data from said database, ready for distribution;
processing means for extracting said data from said data store and generating a sequential data stream therewith for distribution; and
transmission means for encoding and transmitting said sequential data stream; anda said receiver station comprises;
decoder means to receive and decode transmitted data so as to reconstitute said database data therefrom;
input means for a user of said receiver station to input user commands in respect of the demands of the user to said receiver station;
receiver processing means for constituting a database from said data having regard to said user commands;
memory means for storing data for constituting said database; and
means for communicating selected data in direct response to said user commands. - View Dependent Claims (12)
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2. A distributed database system comprising:
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a central station for accumulating and distributing data on a database, and a plurality of receiver stations for receiving said data and selectively making available at least portions of said data in accordance with the demands of a user of a said receiver station; wherein said central station comprises;
a data store for storing accumulated data from said database, ready for distribution;
processing means for extracting said data from said data store and generating a sequential data stream therewith for distribution; and
transmission means for encoding and transmitting said sequential data stream; anda said receiver station comprises;
decoder means to receive and decode transmitted data so as to reconstitute said database data therefrom;
input means for a user of said receiver station to input user commands in respect of the demands of the user to said receiver station;
receiver processing means for constituting a database from said data having regard to said user commands;
memory means for storing data for constituting said database; and
means for communicating selected data in direct response to said user commands;wherein said decoder means includes;
data acquisition means for extracting a serial data stream and a synchronization signal from the transmitted signal;
a data decoder to filter out data control information from said serial data stream and reconstitute said database data; and
transfer means to continuously transfer a stream of reconstituted data to said receiver processing means. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11)
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13. A method for providing a distributed database for access and searching by a user comprising:
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accumulating and distributing data for the database to a plurality of users; receiving and analysing the distributed data in accordance with the demands of the user for selective storage of the data; searching the stored data in response to a user command having regard to the demands of the user; and communicating selected stored data conforming to the demands of the user, to the user.
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14. A method for receiving distributed database data and selectively communicating the same to a user comprising:
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receiving via a television signal and decoding distributed data to reconstitute database data therefrom; receiving and processing user commands representative of the demands of a user; constituting a database from the database data having regard to the user commands; storing selected database data for the constituted database; and communicating selected database data from the constituted database in direct response to the user commands to the user.
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15. A distributed database system comprising at least a primary database in communication via communication means including a television signal with a plurality of remote receiver stations;
- each remote receiver station including storage means adapted to store at least a selected portion of said primary database, each said receiver station further including data processing means adapted to process information stored in said storage means.
- View Dependent Claims (32, 33, 34, 35, 36, 37, 38)
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16. A distributed database system comprising at least a primary database in communication via communication means with a plurality of remote receiver stations;
- each remote receiver station including storage means adapted to store at least a selected portion of said primary database, each said receiver station further including data processing means adapted to process information stored in said storage means; and
further including input means for a user of a said receiver station and wherein said data processing means processes information contained in data sent from said at least primary database and also processes information received from said input means in order to determine which portions of said data and in what manner said portions of said data are to be presented to said user by said receiver station. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
- each remote receiver station including storage means adapted to store at least a selected portion of said primary database, each said receiver station further including data processing means adapted to process information stored in said storage means; and
Specification