System for improved ratiometric expansion and method thereof
US7199837B2 · kind B2 · utility
8Cited by
22References
37Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2001 |
| Grant date | Apr 3, 2007 |
| Priority date | — |
| Expiry date | Apr 2, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0421
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method are described for providing an improved ratiometric expansion of video images. Source video images are set to a lower resolution than the full resolution of a pixelated display device. The source video images are up-scaled to match the display resolution of the display device. Pixels in the source video image are replicated to form a partially up-scaled video image that has frequency content well below the Nyquist rate of the image. The replicated image is then re-sampled through the use of a two-tap filter to generate a video image with the same resolution as the display device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.