Method and apparatus to scan convert radar video to television outputs
US4931801A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 24, 1989 |
| Grant date | Jun 5, 1990 |
| Priority date | — |
| Expiry date | Apr 24, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F7/548
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus for converting polar format radar video data into a horizontal raster format output to a TV monitor. Radar video data comprises radar video pixels each having an associated intensity value and a polar coordinate in a raster display. The TV monitor includes a display screen including a plurality of pixels wherein each pixel has a corresponding X,Y address. The apparatus and method of the invention comprises steps or apparatus for storing the radar video pixels, translating X,Y addresses into corresponding angular and radial coordinates, scanning the storage means using the translated X,Y address and interpolating a radar intensity value for the translated X,Y address. The radar video pixels are indexed by radial and angular coordinates. The scanning process includes accessing at least four radar video pixels surrounding the translated X,Y address. In the preferred embodiment of the invention, the scan conversion of the X,Y addresses is accomplished in a seven stage scan converter pipeline.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.