Vehicle navigation system and recording medium
US6269303A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1998 |
| Grant date | Jul 31, 2001 |
| Priority date | — |
| Expiry date | Aug 7, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3461
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a system which can select a less crowded road as a road section of a guidance route. The vehicle navigation system executes a route search from a departing point or the present position of the vehicle to the destination and provides guidance for the guidance route, taking into account whether a road is in a city area or a suburban area. The vehicle navigation system includes an information memory for storing map information for each road section, a route search routine for searching for a route from the present position to the destination based on map information stored in the information memory, and a decision routine for determining whether a road to be searched is in a city area or in a suburban area, and wherein the route search searches for a route by weighting the roads which are determined to be in the city area in order to give a lower preference thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.