Method and apparatus for generating line segments and polygonal areas on a raster-type display
US4425559A · kind A · utility
78Cited by
7References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1980 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | Jun 2, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/42
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus utilizes information describing linear line segments in terms (1) the horizontal scan line scan at which the line segment originates, (2) the horizontal position within the line of the point of origin, (3) the direction of the line segment, and (4) the horizontal scan line at which the line segment terminates to generate line segment information on a raster-scan type video display. The line segments can be combined to form polygonal areas that are capable of movement and changes in size or shape on the display.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.