Current location indication apparatus for use in an automotive vehicle
US5113185A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1990 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Oct 1, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/36
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A current location indicating apparatus for use in an automotive vehicle. The apparatus comprises a current travel distance detection unit adapted to detect a current cumulated travel distance of the vehicle. A bearing detection unit is adapted to detect a current bearing in accordance with current travel. A signal processing unit is adapted to obtain a current locational point in terms of two-dimensional coordinates of the moving vehicle in accordance with the outputs from each of the detection units. A path of travel store unit is adapted to sequentially store the locational data in terms of the two-dimensional coordinates varying from time to time as obtained by the signal processing unit and hold the contents thereof as current continuous locational information on the moving vehicle. Also provided is a microfilm including a series of photographic images of area maps which are prepared in advance for display use, an image pick-up unit adapted to electrically read desired information on an area map from the microfilm, a display unit adapted to visually indicate a map in accordance with the current read-out map information and display with a marking showing the state of travel mot…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.