Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2007-06-21
2011-10-04
Tung, Kee M (Department: 2628)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S581000, C345S582000, C345S587000, C345S606000, C345S467000, C345S468000
Reexamination Certificate
active
08031204
ABSTRACT:
Systems and methods used for bilinear texture filtering may also be used to perform font filtering. Font data stored as a texture is read from memory in blocks that are coarsely aligned. Font alignment units may be used to provide a finely aligned region of the font data within a font filter footprint. The finely aligned region is then filtered using bilinear filtering to produce font coverage information representing a grayscale value for a pixel. Using existing bilinear filtering engines in conjunction with font alignment and sample units reduces the need for having a specific engine to perform each of the font filtering operations, possibly saving die area in a graphics system.
REFERENCES:
patent: 6400370 (2002-06-01), Lee et al.
patent: 6967659 (2005-11-01), Jayavant et al.
patent: 7737988 (2010-06-01), Toksvig et al.
patent: 2004/0102245 (2004-05-01), Escalera et al.
patent: 2004/0183817 (2004-09-01), Kaasila
patent: 2007/0080972 (2007-04-01), Gruber
patent: 2007/0182753 (2007-08-01), Isidoro et al.
Berendsen John W.
Heckbert Paul S.
Amin Jwalant
NVIDIA Corporation
Patterson & Sheridan LLP
Tung Kee M
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