Apparatus for extending windows using Z buffer memory
US5101365A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1990 |
| Grant date | Mar 31, 1992 |
| Priority date | — |
| Expiry date | Nov 7, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computer system which has a display memory for storing information to be presented on an output display, and a full screen bitmapped window identification memory for storing information regarding window position on an output display, and uses circuitry for comparing incoming information with information stored in the window identification memory to determine whether the incoming information should appear in a particular window of the output display, and also includes a second full screen bitmapped memory normally utilized for storing information indicative of other than window position on an output display and utilizes circuitry for selectively storing information in the second memory regarding window position on the output display when additional windows are required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.