Use of desired orientation in automotive navigation equipment
US6222485A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1999 |
| Grant date | Apr 24, 2001 |
| Priority date | — |
| Expiry date | May 20, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/367
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A electronic navigation device utilizing a desired orientation to adjust an electronic map displayed on the device. Acquiring global positioning system data, a processor calculates the current position of the navigation device. Scanning into cartographic memory located in memory, the processor locates a predefined thoroughfare containing or most adjacent the calculated position. Utilizing points located nearest the calculated position, the processor establishes the heading of the thoroughfare at that location. The processor adjusts the orientation of the map display to reflect the calculated heading of the adjacent thoroughfare. The processor continues to update the current position and the heading of the map display on a real time basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.