Color synchronizer and windowing system for use in a video/graph

Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...

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358183, 395154, G09G 514

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active

052587509

ABSTRACT:
A color synchronizer and windowing system for use in a video or video/graphics system which uses digital television technology integrated circuits to digitize the video information. The digitized video information is stored in a frame buffer as luminance and chrominance data samples. The frame buffer also stores a chrominance reference synchronization signal which is synchronized to the digitized chrominance data samples so as to properly identify the boundary for each chrominance data sample; wherein each such chrominance data sample is associated with a plurality of luminance data samples. This encoded data insures that the luminance and chrominance data samples are properly decoded on chrominance data sample boundaries even though the synchronization signal normally associated with the digital television technology integrated circuits is not available due to the storage of the luminance and chrominance data samples within the frame buffer. In this manner the digitized video information may be reconfigured or combined with graphic information in any desired fashion without loosing chrominance synchronization. The color synchronizer and windowing system for use in a video/graphics system provides a definition for windows and viewports which minimizes the amount of memory necessary to define windows and viewports as well as to be able to present such information to an associated display monitor on a real-time basis.

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