Real-time spherical correction of map data
US9037156B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 26, 2012 |
| Grant date | May 19, 2015 |
| Priority date | — |
| Expiry date | Dec 1, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/029
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of displaying a map on a wireless communications device, the method comprising obtaining map data for rendering the map to be displayed on the wireless communications device and determining a zoom level of the map. If the zoom level of the map exceeds a predetermined zoom level, corrected map data is generated by applying a fixed spherical correction factor to the map data. If the zoom level of the map does not exceed the predetermined zoom level, the corrected map data is generated by computing a spherical correction factor based on a latitude of the map. The method also includes rendering the corrected map data to display the map on a display of the wireless communications device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.