Road map display system with indication of a vehicle position
US4608656A · kind A · utility
97Cited by
12References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1982 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Apr 2, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/3667
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A road map display system for an automotive vehicle displays a mark representative of a vehicle's position and direction. The mark is positioned at the center of a display screen and the coordinate system of the map is transformed depending on the vehicle's direction so that the mark indicative of the direction is always directed upward along the y-axis of the display. The system further includes a scale selector which is manually operable. Depending on the selected map scale, the displayed map is magnified or reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.