Electronic display system
US4744033A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1986 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Apr 29, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09B29/106
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
In an electronic map display system, predetermined linear display object data of all map data are stored in a first memory according to a predetermined coordinate system. Target point data other than the predetermined linear display object data are stored in a second memory in accordance with a relative coordinate system based on the predetermined linear objects. The data of the first memory are converted into display data of designated magnification rate by a first converter. The target point data of the second memory are converted into display data in accordance with a coordinate system based on the linear display objects by a second converter. A display signal is produced to display a map image in accordance with the data converted by the first and second data converters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.