Apparatus for displaying travel path
US4963865A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1987 |
| Grant date | Oct 16, 1990 |
| Priority date | — |
| Expiry date | Mar 16, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B29/106
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is disclosed an apparatus for displaying a travel path of a running body in which a constantly changing location of the running body on a two-dimensional coordinates is successively computed and the current location of said running body is displayed successively, in accordance with the data thus computed, on a display screen having a map previously displayed thereon. According to this apparatus, longitude and latitude values of a reference point in a mesh consisting of lines of longitude and latitude in each map of divided areas are registered as known factors and the current location of the running body on the two-dimensional coordinates thus computed is converted to a location on longitude-latitude coordinates, whereby the current location on the map is calculated from the known longitude and latitude values of the reference point displayed on the display screen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.