LOW LATENCY VIDEO TEXTURE MAPPING VIA TIGHT INTEGRATION OF CODEC ENGINE WITH 3D GRAPHICS ENGINE
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United States of America Patent
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Issued Date -
Aug 13, 2015
app pub date -
Feb 13, 2014
filing date -
Feb 13, 2014
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status (Latency Note)
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Abstract
A graphics system includes a codec engine to decode video data to generate a sequence of decoded blocks of a video image and a graphics engine to render a geometric surface in a display picture by rendering polygons of the geometric surface using each decoded block as a texture map for a corresponding subset of the polygons concurrent with the codec engine generating the next decoded block. The graphics engine can render the geometric surface by mapping the polygons to a grid of regions corresponding to the decoded blocks, and as each decoded block is generated, the graphics engine identifies a corresponding subset of the polygons that intersect a grid region corresponding to the decoded block based on the mapping, and for each polygon of the subset, render in the display picture that portion of the polygon that intersects the region using the decoded block as a texture map.
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