Services based on position location using broadcast digital television signals
First Claim
Patent Images
1. A method for providing a navigation service, the method comprising:
- accessing a location of a device, the location determined from pseudo-ranges between the device and a plurality of digital television (DTV) transmitters, the pseudo-ranges calculated from broadcast DTV signals received by the device from the DTV transmitters; and
providing navigation information according to the location of the device.
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Abstract
A service depends on the location of a device. The device location is determined using DTV signals. More specifically, the device location is determined based on pseudo-ranges between the device and a plurality of digital television (DTV) transmitters and the pseudo-ranges are determined based on broadcast DTV signals received by the device from the DTV transmitters. Examples of DTV signals include the American Television Standards Committee (ATSC) signals, the European Telecommunications Standards Institute Digital Video Broadcasting-Terrestrial (DVB-T) signals and the Japanese Integrated Service Digital Broadcasting-Terrestrial (ISDB-T) signals.
255 Citations
34 Claims
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1. A method for providing a navigation service, the method comprising:
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accessing a location of a device, the location determined from pseudo-ranges between the device and a plurality of digital television (DTV) transmitters, the pseudo-ranges calculated from broadcast DTV signals received by the device from the DTV transmitters; and
providing navigation information according to the location of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29, 30)
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13. An apparatus for providing a navigation service, comprising:
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means for accessing a location of a device, the location determined from pseudo-ranges between the device and a plurality of DTV transmitters, the pseudo-ranges calculated from broadcast DTV signals received by the device from the DTV transmitters; and
means for providing navigation information according to the location of the device.
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26. A computer software product, comprising instructions stored on a computer readable medium, to effect a method comprising:
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accessing a location of the device, the location determined from pseudo-ranges between the device and a plurality of DTV transmitters, the pseudo-ranges calculated from broadcast DTV signals received by the device from the DTV transmitters; and
providing navigation information according to the location of the device.
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31. A system for providing a navigation service based on a location of a device, the system comprising:
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a device for receiving broadcast DTV signals from a plurality of DTV transmitters;
a DTV location server for determining a location of the device from pseudo-ranges between the device and the DTV transmitters, the pseudo-ranges calculated from the received DTV signals; and
a service provider system for providing navigation information according to the location of the device. - View Dependent Claims (32, 33, 34)
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Specification