System and method for downsizing video data for memory bandwidth optimization
US8907987B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2010 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Mar 14, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2370/022
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The video output system in a computer system reads pixel information from a frame buffer to generate a video output signal. In addition, full-motion video may also be displayed in a window defined in the frame buffer. If the native resolution of the full-motion video is larger than the window defined in said frame buffer then valuable memory space and memory bandwidth is being wasted by writing said larger full-motion video in a memory system (and later reading it back) when some data from the full-motion video will be discarded. Thus, a video pre-processor is disclosed to reduce the size of the full-motion video before that full-motion video is written into a memory system. The video pre-processor will scale the full-motion video down to a size no larger than the window defined in the frame buffer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.