Travel guidance system for vehicles
US4646089A · kind A · utility
99Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 1984 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Jan 6, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3682
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a travel guidance system for vehicles, a map data storage medium preliminarily stores administrative division name data and/or landmark data, and a control unit has the function of retrieving the name of an administrative division to which the present position of a vehicle belongs and/or a landmark in the vicinity of the present position in accordance with present position data and displaying the retrieved administrative division name and/or the retrieved landmark on a display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.