Computer graphics processing and selective visual display system – Computer graphics processing – Attributes
Reexamination Certificate
2006-01-10
2006-01-10
Bella, Matthew C. (Department: 2676)
Computer graphics processing and selective visual display system
Computer graphics processing
Attributes
C345S590000, C345S592000, C345S597000, C345S629000
Reexamination Certificate
active
06985157
ABSTRACT:
The blending coefficients (alpha values) of font glyphs undergo alpha correction to compensate for a lack of gamma correction in text rendering processes. The alpha correction includes selecting a set of correction coefficients that correspond to the predetermined gamma value of the display device and computing corrected alpha values from the known alpha values, the foreground colors, and set of correction coefficients. The corrected alpha values can then be used to blend the foreground and background colors of the corresponding display pixels without requiring gamma correction. Accordingly, the alpha correction can be performed by a GPU, which is not configured to perform gamma correction, thereby increasing the speed at which text rendering can occur.
REFERENCES:
patent: 5128658 (1992-07-01), Pappas et al.
patent: 5473737 (1995-12-01), Harper
patent: 6897879 (2005-05-01), Lyapunov et al.
patent: 2005/0110804 (2005-05-01), Hancock et al.
Lyapunov Mikhail M.
Platt John C.
Bella Matthew C.
Microsoft Corporation
Rahmjoo Mike
Workman Nydegger
LandOfFree
Alpha correction to compensate for lack of gamma correction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Alpha correction to compensate for lack of gamma correction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alpha correction to compensate for lack of gamma correction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3526470