Graphic processor and a bit-built method applied therein
US5886708A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 9, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | May 9, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T1/60
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In order to realize a high-speed bit-built processing for superimposing pixel data of an image on to a video-memory, only substantial pixel data having color values different from a designated transparent color of a line of the image are stored in a line buffer (109) together with offset values of .chi.-addresses in the line of the substantial pixel data stored in a offset buffer (110). A memory controller (111) reads out the substantial pixel data from the line buffer in order, and writes them in a video memory (112) at a line according to writing addresses calculated by a writing address generator (106) referring to the offset values stored in the offset buffer corresponding to the substantial pixel data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.