High speed display system having cursor multiplexing scheme
US5815137A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1994 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Oct 19, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for processing display data in multi-pixel sections which also tracks and maps a cursor in single pixel increments is disclosed. A video buffer card receives display data and generates display control data for a multi-pixel section of display frame, and cursor display information including cursor enable information, cursor color selection information, cursor color and blending information, and X and Y cursor location information. Additionally, the current horizontal and vertical location of the multi-pixel section of the display data is tracked and used in combination with the cursor X and Y location information to calculate an offset that is used to replace certain portions of the display data with cursor color information. The video buffer card also supports a blending operation which provides a blend of the cursor foreground and background colors with the displayed image colors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.