Apparatus and method for compressing still images without multiplication
US5129015A · kind A · utility
28Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1990 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | Apr 19, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Transforms such as the DCT are useful for image compression. One close relative of the DCT is preferred for its arithmetic simplicity. A method is described whereby the image compression is done with no multiplications. Other enhancements are made to improve image quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.