Method and apparatus for displaying a high resolution image on a low resolution CRT
US4924522A · kind A · utility
37Cited by
7References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 1989 |
| Grant date | May 8, 1990 |
| Priority date | — |
| Expiry date | May 11, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for displaying a high resolution image on a low resolution CRT with a minimal loss of information. Even rows of a source or matrix of binary pixels are stored in an "even" video RAM and odd rows are stored in an "odd" video RAM at addresses corresponding to the locations of the binary pixels within the matrix. In a preferred embodiment, a group of four pixels corresponding to a portion of the image is converted to a single gray value which is used to control the intensity of the beam control within the CRT.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.