Caching coverage values for rendering text using anti-aliasing techniques
US9171386B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2011 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Jun 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2360/121
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Techniques for calculating sub-pixel coverage values for text to be displayed, so as to enable caching of the sub-pixel coverage values. The sub-pixel coverage values may enable a linear combination of color information for the text with color information for one or more other, overlapping display elements for calculating composite color values to be used in controlling a display. Such composite color values to be used in controlling sub-pixels of a display may be calculated, in some embodiments, without performing a gamma correction process. Also described are techniques for retrieving cached sub-pixel coverage values and combining the values with color information for text and for other, overlapping display elements to calculate composite color values for sub-pixels of a display. At least one graphics processing unit (GPU) may be configured to perform operations using the sub-pixel coverage information and to calculate the composite color values for the sub-pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.