Method and apparatus for generating and outputting a location data stream
US8060108B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2007 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Sep 22, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S19/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for providing a sequence of location data points to a mapping device. A cellular mobile station uses GPS satellite signals to compute its varying location over time and outputs the location as data points in a sequence to the mapping device. If the mobile station loses satellite communication, it transitions the output sequence to a static state in which the location data points are a substantial repetition of the last location that the mobile station determined from satellite signals. Further, when the mobile station detects that it has entered into a new cellular coverage area, it obtains satellite assistance data from its cellular carrier network and uses the data to renew satellite communication. The mobile station may then transition the sequence back to a dynamic state, with location data points determined over time based on received satellite signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.