Cartographic indicator system
US4360876A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 2, 1980 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | Jul 2, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C21/22
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An indicator system satisfies multiple flight-mission requirements by providing an aircraft pilot with a visual display consisting of a movable map and navigational data. The map is stored in video form in a high-capacity compact mass memory consisting of a video disk. The system further comprises a symbol and character generator as well as an intermediate memory which has a capacity larger than required for the map-zone image to be displayed together with navigation symbols on a television monitor. The unit is controlled by a microprocessor on the basis of data relating to latitude, longitude and heading of the aircraft in order to refresh the intermediate memory and to obtain an image displayed with a "top-north" or "top-heading" orientation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.