Method for identifying current position of vehicle
US4924402A · kind A · utility
91Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1987 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | Jul 2, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A momentarily changing position of a travelling vehicle is correctly identified by a vehicular nagivation system on which a magnetism sensor, angular velocity sensor, travel distance sensor and global positioning system are mounted. The current position of the vehicle is identified by, for example, storing data of a road on a map in the form of numerical values, measuring a predetermined distance which the vehicle has travelled and computing the current position on the road based upon the predetermined distance thus measured.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.