Navigation apparatus
US4937751A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 11, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Jul 11, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3647
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A navigation apparatus for navigating an automotive vehicle in accordance with a preset course while measuring distance travelled and steering angle is characterized by previously storing positions of charactering features along the course and guidance information relating to said characterizing features, correlating travelling distance and the positions of the characterizing features, and outputting guidance information relating to a particular characterizing feature on the condition that said characterizing feature has been approached. Guidance information relating to a particular characterizing feature is outputted when the vehicle has approached this characterizing feature. Thereof, by matching this guidance information with the circumstances along the course, the driver can verify during travel whether the course is correct or not. Accordingly, even if it is a long distance to the intersection at which the next turn is to be made, the driver is capable of verifying the course by the time this intersection is reached. this enables the driver to drive the vehicle without anxiety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.