Method and apparatus for compressing and decompressing color video data with an anti-aliasing mode
US5046119A · kind A · utility
142Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1990 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Mar 16, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/91
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adaptive compression/decompression method for color video data with an anti-aliasing mode. 4.times.4 blocks of pixel data are examined to determine which one of four compression techniques should be used on each block. User settable thresholds can be used to shift the types of compression used. Highest compression is obtained when more data is stored in run length blocks of single colors and lowest compression when more data is stored as two colors with a 32-bit bitmap for each 4.times.4 block. One type of compression used provides anti-aliasing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.