Digital contour line generator
US4823287A · kind A · utility
7Cited by
6References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 1987 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | May 28, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20101
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A contour line generator for identifying and displaying real time elevation contour lines for use with a moving map display. A plurality of data points neighboring a selected data point are compared to determine the presence or absence of a contour line. An average elevation is computed and applied to address a contour memory, having stored therein the elevations at which contour lines are desired to be displayed. The resultant logic signals are applied dynamically to override normal display data when a contour line is to be generated. The system provides programability for flexibility in modifying contour line intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.