Navigation system for vehicles
US5371497A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 5, 1993 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Aug 5, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/34
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A navigation system for vehicles, capable of exactly and quickly showing guide information to a driver when two intersections to be negotiated are close to each other, is provided. A destination is input by an input part and a route to the destination is calculated from a present position of a vehicle, calculated by a present position determiner, by a route calculator included in a calculation section. The calculated route is stored in a route memory. A route guide controller included in the calculation section reads map information around the vehicle, stored in a guide information memory within a map information storage section and superimposes the map information with the present position of the vehicle, a traveling direction and the route stored in the route memory to display the superimposed information on a display. When the vehicle approaches the intersection, the screen is changed with an intersection map, but, when a next intersection map is required, the next intersection map is drawn on the back screen and is displayed by changing the two screens after the vehicle passes through the first intersection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.