Satellite multimedia delivery to vehicles

• US 6,512,921 B1
• Filed: 05/01/2000
• Issued: 01/28/2003
• Est. Priority Date: 05/01/2000
• Status: Expired due to Term

• Current Assignee: Northrop Grumman Systems Corporation (Northrop Grumman Corporation)
• Original Assignee: TRW Inc. (Northrop Grumman Corporation)
• Inventors: Hadinger, Peter J.
• Primary Examiner(s): Trost, William
• Assistant Examiner(s): LE, DANH C
• Application Number:
  US09/562,504
• Time in Patent Office: 1,002 Days
• Field of Search: 455/431, 455/427, 455/445, 455/428, 455/12.1, 455/13.1, 455/13.2, 455/13.3, 725/76
• US Class Current: 455/431
• CPC Class Codes: H04B 7/1858 Arrangements for data transmission on the physical system, i.e. for data bit transmission between network components

Abstract

A GSO satellite constellation (10) and an NGSO constellation (20) may be used to send various types of communication signals and multimedia signals to an aircraft (30). The video signals are demodulated by a demodulator (46) and routed by a router (64) to TV monitors (72 and 74), as well as short-term video storage (78). Data can be received and transmitted by a low gain, narrowband transmitter/receiver (100) in order to provide voice, computer and control communications at all times during the flight of aircraft (30).

Claims

1. In a satellite communication system comprising at least one geostationary broadband satellite and at least one narrowband satellite, communication apparatus suitable for location on a vehicle for providing communications between said satellites and said vehicle comprising in combination:

a first antenna configured to receive first carrier signals carrying first data from said broadband geostationary satellite;

a first demodulator connected to said first antenna and configured to demodulate said first carrier signals to generate first data signals;

a second antenna configured to receive second carrier signals carrying second data from said narrowband satellite;

a second demodulator connected to said second antenna and configured to demodulate said second carrier signals to generate second data signals;

a source of third data signals embodying third data;

a modulator responsive to said third data signals for generating third carrier signals carrying said third data for transmission by said second antenna;

a first utilization system configured to utilize said first data;

a second utilization system configured to utilize said second data; and

a router connected to route said first data signals to said first utilization system, to route said second data signals to said second utilization system and to route said third data signals to said modulator.

2. Apparatus, as claimed in claim 1, wherein said first antenna comprises a broadband antenna.

3. Apparatus, as claimed in claim 1, wherein said first carrier signals comprise frequency division multiple access signals.

4. Apparatus, as claimed in claim 1, wherein said first carrier signals comprise video channels and data channels.

5. Apparatus, as claimed in claim 1, wherein said first data comprises video data.

6. Apparatus, as claimed in claim 1, wherein said second antenna comprises a narrowband antenna.

7. Apparatus, as claimed in claim 1, wherein said second carrier signals comprise frequency division multiple access signals.

8. Apparatus, as claimed in claim 1, wherein said second carrier signals comprise voice channels and data channels.

9. Apparatus, as claimed in claim 1, wherein said second data comprises mobile telephone data.

10. Apparatus, as claimed in claim 1, wherein said second data comprises packets of data.

11. Apparatus, as claimed in claim 1, wherein said source of third data comprises a telephone.

12. Apparatus, as claimed in claim 1, wherein said source of third data comprises a computer.

13. Apparatus, as claimed in claim 1, wherein said first utilization system comprises a television monitor.

14. Apparatus, as claimed in claim 1, wherein said second utilization system comprises a telephone.

15. Apparatus, as claimed in claim 1, wherein said second utilization system comprises a network capable of transmitting computer data.

16. Apparatus, as claimed in claim 1, wherein said vehicle comprises an aircraft.

17. Apparatus, as claimed in claim 1, and further comprising a switch arranged to couple said first demodulator to said router.

18. Apparatus, as claimed in claim 1, and further comprising a signal detector responsive to one of said first carrier signals and said first data signals greater than a predetermined signal level for causing said switch to couple said first data signals to said router.

19. Apparatus, as claimed in claim 1, wherein said signal detector is responsive to one of said first carrier signals and said first data signals less than a predetermined signal level for preventing said switch from coupling said first data signals to said router.

20. Apparatus, as claimed in claim 1, wherein said second data comprises second control data and second communication data, wherein said second utilization system comprises a first utilization station at a first location in said vehicle and a second utilization station at a second location in said vehicle and wherein said apparatus further comprises a control module responsive to said control data to program said router to selectively disable communication of said second communication data to at least one of said first and second utilization stations.

21. Apparatus, as claimed in claim 1, and further comprising a storage unit connected to store at least a portion of said first data signals to enable usage of said stored first data signals by said first utilization system in the event said first carrier signals become unusable.

22. In a satellite communication system comprising at least one geostationary satellite and at least one non-geostationary satellite, a method of providing communications between said satellites and a vehicle comprising in combination:

receiving at said vehicle first carrier signals carrying first data from said geostationary satellite;

demodulating said first carrier signals to generate first data signals;

receiving at said vehicle second carrier signals carrying second data from said non-geostationary satellite;

demodulating said second carrier signals to generate second data signals;

generating at said vehicle third data signals embodying third data;

modulating said third data signals to generate third carrier signals carrying said third data for transmission from said vehicle;

utilizing said first data at a first site in said vehicle;

utilizing said second data at a second site in said vehicle;

routing said first data signals to said first site;

routing said second data signals to said second site; and

routing said third data signals to enable said modulating.

23. A method, as claimed in claim 22, wherein said utilizing said first data comprises generating a television image.

24. A method, as claimed in claim 22, wherein said utilizing said second data comprises generating a telephone signal.

25. A method, as claimed in claim 22, wherein said utilizing said second data comprises storing said second data in a computer.

26. A method, as claimed in claim 22, and further comprising detecting one of said first carrier signals or said first data signals greater than a predetermined signal level and enabling the transmission of said first data signals in response to said detecting.

27. A method, as claimed in claim 26, and further comprising detecting one of said first carrier signals and said first data signals less than a predetermined signal level and preventing the transmission of said first data signals in response to said detecting.

28. A method, as claimed in claim 22, wherein said second data comprises second control data and second communication data, wherein said utilizing said first data comprises utilizing at a first location in said vehicle and utilizing at a second location in said vehicle and wherein said method further comprises selectively disabling communication of said second communication data in response to said second control data.

29. A method, as claimed in claim 22, and further comprising storing at least a portion of said first data signals to enable usage of said stored first data signals in the event said first carrier signals become unusable.