Image display device employing selective or asymmetrical smoothing
US7129959B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2005 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | Apr 11, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G5/28
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image display device includes a smoothing unit that filters the image data to be displayed. According to one aspect of the invention, only bright parts of the image that are adjacent to dark parts are smoothed, thereby improving the sharpness of dark dots and lines displayed on a bright background. According to another aspect, different primary colors are smoothed with different characteristics, enabling unwanted colored tinges to be removed from the edges of white areas. According to still another aspect, smoothing moves the luminance centroids of all primary colors in a direction in which the display screen is scanned, to reduce ringing effects without needless loss of edge sharpness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.