Patent ID: 6844875

Claim:
A video converter board for converting stroke/raster video formatted data into a Red, Green, Blue (RGB) video having a sync-on-green (SOG) control signal formatted for a serial interface conforming to Electronic Industries Association (EIA) standards, said stroke/raster video data comprising X deflection signals, Y deflection signals and video-in signals and said RGB video data being synchronized by said sync-on-green (SOG) signal, said video converter board comprising: a) analog to digital front-end circuitry for sampling at a predetermined rate said X deflection, Y deflection and video-in signals and converting each sampled signal into a corresponding digital quantity; b) video memory comprised of a plurality of banks for storing each digital quantity; c) memory control circuitry for sequentially selecting each of the plurality of memory banks; d) synchronization control circuitry having a first routine for generating timing signals for said sync-on-green (SOG) signal and a second routine for generating the memory addresses for reading and blanking; and e) a digital/analog converter output circuitry receiving in response to said synchronization control circuitry, the formatted RGB video data as well as the timing signals for said SOG signal and outputting said SOG signal along with said RGB video data in a manner conforming to said interface.