Non-square scaling of image data to be mapped to pixel sub-components
US6278434A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1998 |
| Grant date | Aug 21, 2001 |
| Priority date | — |
| Expiry date | Oct 7, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/0457
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for displaying an image by uttilizing pixel sub-components which form a pixel element of an LCD display as separate luminous intensity elements. By treating the pixel sub-components independently, increased resolution is achieved in the dimension that is perpendicular to the dimension in which the screen is striped. To take advantage of the increased resolution, the image is processed by first scaling the image data in one dimension at a rate that is greater than the scaling of the image data in another dimension. The pixel sub-components are then independently determined from different portions of the scaled image data though scan conversion, which may involve the use of different weights for each color component. Color distortions such as color fringing is compensated by treating eachi pixel sub-component independently. For horizontally flowing text, applications, screens with vertical striping are preferred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.