Radar scan converter and method of mixing image

Details Radar scan converter and method of mixing image Radar scan converter and method of mixing image

1999-05-27

2000-07-11

Sotomayor, John B.

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

With particular circuit

Display

342195, 342183, 342179, G01S 7298

Patent

active

060879823

ABSTRACT:
A radar scan converter and method of mixing image. By inserting a radar scan converter (RSC) card in a personal computer, an input video such as a radar video or supersonic video can be mixed on a screen of the personal computer without deteriorating the current graphic, such as range rings, plots, tracks, and symbols. An analog-to-digital converter, a radial buffer, a decimation filter, a coordinate converter and an overlay processor are used in the radar scan converter. The overlay processor read a display memory on a display card according to a triangular coordinate generated by the coordinate converter. The read data from the display memory is then compared. When the read data do not contain either text or graphic, a data processed by the decimation filter is written into the display memory.

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