Pre-fetching map tile data along a route
US9563976B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 2015 |
| Grant date | Feb 7, 2017 |
| Priority date | — |
| Expiry date | Aug 17, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T17/05
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A path made up of several points including an origin, a destination, and intermediate points, is determined. Map data is fetched from an external map database to a local memory of a client device prior to detecting a need to use the map data for rendering maps at the client device. To this end, respective priorities of the points are determined, amounts of map data to be fetched are determined based on the determined priorities, and map data is fetched in accordance with the determined priorities, so that a first amount of map data is fetched for a point with a first priority and a second amount of map data for a point with a second priority, where the first amount is greater from the second amount. Respective digital maps of the one the geographic areas are generated using the pre-fetched map data stored in the local memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.