Position information providing system indoor transmitter and method for providing position information
US8174439B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2008 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Oct 2, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An indoor transmitter is capable of programmably changing a format of a transmitter signal. A process to be performed by a position information providing apparatus comprises the step of acquiring a received positioning signal, and the step of identifying an emission source of the positioning signal, wherein, if the emission source of the positioning signal is an outdoor source, the process further comprises the step of acquiring a navigation message included in the positioning signal, and the step of performing a processing for calculating a position based on the signal, or, if the emission source of the positioning sign is an indoor source, the process further comprises the step of acquiring message data from the positioning signal, the step of acquiring coordinate values from the data, and the step of displaying position information based on the coordinate values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.