Hand-held device providing a closest feature location in a three-dimensional geometry database
US6222482A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 29, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | Jan 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/29
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hand-held device has access to a three-dimensional geometry database and a GPS receiver, and provides information on the one or more closest features to the device location in the three-dimensional geometry database. The system has data input devices, optionally digital cameras, and a data processor executing a location process. A multiresolution process creates one or more models of the three-dimensional geometry database. The models have a hierarchy of resolutions. The models have vertices, edges and polygons. The multiresolution process preferably associates data to the vertices, edges and polygons. A data processor executes a location process that determines a distance between the position of the hand-held device and corresponding one or more closest features on the hierarchy of resolutions of the database. The data processor produces display commands for displaying data and geometry relative to the one or more closest features. Data input devices are used to collect data that is appended to or replaces data pertaining to the one or more closest features.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.