Navigation system
US6175805A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Apr 12, 1999 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Apr 12, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3484
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
To cope with differences in the evaluation depending on the user, or depending on the situation, by making it possible to alter the evaluation values used for automatically searching for the route, in a navigation system, which has a map reproduction means 4 storing segment data such as the distance and the road type, of the road segment forming a road network, a RAM 6 for storing the evaluation values corresponding to the segment data, and a control circuit 1 for searching for the route from a starting point to a destination, in accordance with a synthetic evaluation function using, as parameters, the evaluation values stored in the RAM 6, a setting means 7 is provided for altering the evaluation values stored in the RAM 6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.