Video graphic simulator systems
US5090909A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1990 |
| Grant date | Feb 25, 1992 |
| Priority date | — |
| Expiry date | Aug 2, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T15/40
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Sources of video signals representing an object (e.g. an aircraft), optionally movable, and a scene provide data stored in frame stores (b 1,5). Distance (optionally variable) from the observer of the object and near and far distances at transitions between features in the scene are stored respectively in frame store (4) and (7a, 7b). Within the boundaries of the object and in the neighborhood of the lines of transition, between features of the scene, quantities stored in object and scene stencil frame stores (3, 6) vary from 0 to 1. All frame stores are read simultaneously, driven by a microprocessor (2), the picture point scanning element sequentially. A comparator (11) compares distances, and the results of the comparison, together with the values stored in the stencil frame stores, determine the tone displayed at each element. Near features obscure distant ones, and sharp transitions are softened.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.