Method and apparatus to scan convert radar video to television o

Details Method and apparatus to scan convert radar video to television o Method and apparatus to scan convert radar video to television o

1989-04-24

1990-06-05

Barron, Jr., Gilberto

Communications: directive radio wave systems and devices (e.g.,

With particular circuit

Display

358140, G01S 7298

Patent

active

049318012

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.

REFERENCES:
patent: 4220969 (1980-09-01), Nitadori
patent: 4275415 (1981-06-01), Engle
patent: 4434437 (1984-02-01), Strolle et al.
patent: 4656467 (1987-04-01), Strolle

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