Apparatus and method to merge images rasterized at different resolutions
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United States of America Patent
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Aug 24, 1993
Grant Date -
N/A
app pub date -
Mar 5, 1991
filing date -
Mar 5, 1991
priority date (Note) -
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Abstract
An input image containing high resolution images and low resolution images is rasterized twice, once at a high resolution and once at a low resolution. The rasterized images are represented in compressed form using a run-code encoding technique. The low resolution images are rasterized during the low resolution rasterization and are scaled to the output resolution. The high resolution images are rasterized during the high resolution rasterization. The two rasterizations are merged in hardware, producing a composite output image which contains low resolution image elements and high resolution image elements.
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