Image analysis – Image transformation or preprocessing – Changing the image coordinates
Patent
1998-05-12
2000-09-05
Au, Amelia
Image analysis
Image transformation or preprocessing
Changing the image coordinates
345519, 382238, G06K 932
Patent
active
061155071
ABSTRACT:
A display controller to upscale a source video image for display on a display unit of a computer system. An encoder circuit in the display controller chip stores in a local memory pixel data of previous scan lines required for interpolation in a compressed format using differential pulse code modulation (DPCM) scheme. A decoder circuit decompresses the pixel data into original format prior to sending to an interpolator. The interpolator receives a present scan line and the decompressed data of previous scan lines, and interpolates the received pixels to generate additional pixels required for upscaling the source video image.
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Eglit Alexander Julian
Zong Jim
Au Amelia
Johnson Timothy M.
S3 Incorporated
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