System for providing global portable internet access using low earth orbit satellite and satellite direct radio broadcast system

• US 6,105,060 A
• Filed: 09/05/1997
• Issued: 08/15/2000
• Est. Priority Date: 09/05/1997
• Status: Expired due to Fees

• Current Assignee: WorldSpace, Inc.
• Original Assignee: WorldSpace, Inc.
• Inventors: Rothblatt, Martine A.
• Primary Examiner(s): Miller, John W.
• Application Number:
  US08/923,935
• Time in Patent Office: 1,075 Days
• Field of Search: 709/217-219, 455/3.1, 455/3.2, 455/5.1, 455/6.1, 455/6.2, 455/6.3, 455/4.1, 455/4.2, 349/6, 349/10, 349/12, 349/13
• US Class Current: 709/219
• CPC Class Codes: H04B 7/18584 Arrangements for data networking, i.e. for data packet routing, for congestion control data switching networks H04L12/00

Abstract

A system for providing global and portable Internet access to low cost user terminals comprises an Internet service provider gateway and a broadcast station for providing multimedia information from the gateway to the user terminals via a direct radio broadcast geostationary satellite. User terminals each comprise a direct radio broadcast receiver and a transceiver for communicating with a low earth orbit (LEO) satellite. User terminals transmit Internet access requests, menu selections and other backhaul signals to the gateway via the transceiver. The broadcast station transmits information requested by the user from the gateway to a specific user terminal by providing identification codes in the broadcast programs. The user terminals are programmable to receive all broadcast programs but to demodulate and demultiplex only those broadcast channels addressed to the user terminal. Internet access is available simultaneously with reception of satellite direct broadcasts of audio programs.

Claims

1. A system for providing portable computer network access comprising:

a satellite direct radio broadcast system having a first satellite and a broadcast station for transmitting broadcast programs to said first satellite;

a user terminal comprising a direct radio broadcast receiver for receiving said broadcast programs transmitted from said first satellite;

a gateway for providing computer network service; and

a communication link between said user terminal and said gateway, said user terminal being operable to generate backhaul signals comprising computer network access requests and responses of a user and to transmit said backhaul signals to said gateway via said communication link, said broadcast station being operable to transmit data provided by said gateway in response to said backhaul signals via said first satellite.

2. A system as claimed in claim 1, wherein said communication link comprises a second satellite and said user terminal comprises a transceiver for transmitting said backhaul signals to said second satellite.

3. A system as claimed in claim 2 and comprising a plurality of user terminals, said broadcast station being operable to transmit a control word with said data from said gateway to said first satellite, said control word corresponding to a selected one of said plurality of user terminals, each of said plurality of user terminals being operable to receive said data via said receiver but not use said data unless said control word corresponds to said user terminal.

4. A system as claimed in claim 1, wherein said communication link comprises at least one low earth orbit satellite and said user terminal comprises a transceiver configured for transmitting said backhaul signals to said at least one low earth orbit satellite.

5. A system as claimed in claim 1, wherein said user terminal is portable.

6. A system as claimed in claim 1 and comprising a plurality of user terminals, said broadcast station being operable to provide a control word with said data from said gateway in said broadcast programs for transmission to said first satellite, said control word corresponding to a selected one of said plurality of user terminals, each of said plurality of user terminals being operable to receive said data via said receiver but not to use said data unless said control word corresponds to said user terminal.

7. A system as claimed in claim 1, wherein said communication link is a second satellite link.

8. A system as claimed in claim 1 and comprising a plurality of user terminals, said broadcast station being operable to transmit a control word with said data from said gateway to said first satellite, said control word corresponding to a selected one of said plurality of user terminals, each of said plurality of user terminals being operable to receive said data via said receiver but not use said data unless said control word corresponds to said user terminal.

9. A system as claimed in claim 1, wherein said user terminal comprises a processing device, a display device, a speaker and a user input device, said processing device being programmable to play audio signals provided in one of said broadcast programs to said speaker while processing said data received in one of said broadcast programs and generating at least one screen on said display device to provide said user with options for using the computer network, said options being selectable using said user input device.

10. A satellite direct broadcast system for providing portable computer network access comprising:

at least one satellite for transmitting signals comprising broadcast programs to a plurality of user terminals, said plurality of user terminals each comprising a receiver for receiving said signals transmitted by said satellite;

at least one broadcast station for transmitting broadcast programs to said satellite;

at least one gateway for providing computer network service, said at least one gateway being configured to provide computer network data to said satellite for transmission to said plurality of user terminals; and

a communication link between said at least one gateway and each of said plurality of user terminals, each of said plurality of user terminals being configured to transmit output signals to said gateway via said communication link to perform at least one of a plurality of functions selected from the group consisting of initiating an computer network session, requesting a web page, browsing, requesting downloading of selected said computer network data, transmitting a user input in response to a screen prompt generated by said user terminal and terminating an computer network session.

11. A satellite direct radio broadcast system as claimed in claim 10, wherein said communication link comprises a low earth orbit satellite and said user terminal comprises a low earth orbit satellite transceiver for transmitting said output signals to said gateway.

12. A satellite direct radio broadcast system as claimed in claim 10, wherein said communication link comprises a satellite, and said user terminal comprises a communication interface to said communication link for transmitting said output signals to said gateway.

13. A user terminal for receiving satellite direct radio broadcasts comprising:

a receiver for receiving direct radio broadcasts from a first satellite;

a communication device for communicating with a digital communication network;

a display device;

an input device; and

a processor connected to said receiver, said communication device, said display device and said input device, said processor being programmable to initiate access to a digital communication network by generating and transmitting an outgoing signal thereto via said communication device, said digital communications network being configured to download data therefrom to said user terminal via said first satellite, said processor being programmable to generate and transmit another said outgoing signal via said communications device to communicate with said digital communication network in response to user inputs via said input device and to receive incoming signals generated by said digital communication network in response to said user inputs via said receiver.

14. A user terminal as claimed in claim 13, wherein said digital communication network comprises a second satellite and said communication device comprises a transceiver for transmitting said outgoing signal to said second satellite.

15. A user terminal as claimed in claim 13, wherein said digital communication network comprises a radio frequency network and said user terminal comprises a transceiver configured for transmitting said output signals and said user inputs to said radio frequency network, said gateway being operable to transmit said data to said first satellite in response to said output signals to provide global computer network access.

16. A user terminal as claimed in claim 15, wherein a control word is transmitted with said data from said gateway to said first satellite and said user terminal is one of a plurality of user terminals, said control word corresponding to a selected one of said plurality of user terminals, each of said plurality of user terminals being operable to receive said data via said receiver but not use said data unless said control word corresponds to said user terminal.

17. A method of providing portable user terminals with global computer network access comprising the steps of:

generating a request to access the computer network from one of said user terminals;

transmitting said request from said user terminal via a communication link to a gateway for providing access to the computer network;

generating a broadcast program using data provided by said gateway;

transmitting said broadcast program to all of said user terminals using a satellite in a direct radio broadcast system;

receiving said broadcast program at each of said user terminals comprising a satellite direct radio broadcast receiver;

generating a backhaul signal using at least one of said user terminals; and

transmitting said backhaul signal from said user terminal to said gateway via said communication link.

18. A method as claimed in claim 17, wherein said step of generating a broadcast program further comprises the step of providing a control word in said broadcast program for addressing a selected one of said user terminals.

19. A method as claimed in claim 18, wherein said receiving step comprises the step of each of said user terminals receiving said data via said direct radio broadcast receiver but not using said data unless said control word corresponds to said user terminal.

20. A method as claimed in claim 17, wherein said backhaul signal is selected from the group consisting of initiating an computer network session, requesting a web page, browsing, requesting downloading of selected said computer network data, transmitting a user input in response to a screen prompt generated by said user terminal and terminating an computer network session.