Signature based map caching
US9851209B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 29, 2014 |
| Grant date | Dec 26, 2017 |
| Priority date | — |
| Expiry date | Oct 16, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B29/004
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Systems, methods, and computing devices for building, operating and using map systems with signature-based map caches are disclosed. Based on the desired map properties included in a formatted map request, a map signature can be generated. The map signature can be used to access a signature based map cache to determine whether a map with identical map properties has been previously generated and stored in cache or otherwise available for retrieval. If the map signature exists in the map cache, the corresponding map can be delivered to a map client. If the map signature does not exist in the map cache, then a map can be generated or rendered based on the map properties in the map request. Once the map is generated, it can be saved to the map cache along with associated map signature for future retrieval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.