Video signal compression apparatus using noise reduction
US6115071A · kind A · utility
31Cited by
15References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 10, 1995 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Jan 10, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/61
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Noise reduction circuitry, in a video signal compression apparatus of the predictive DPCM compression type includes a simple nonlinear processing element within the DPCM loop to eliminate residues between predicted and real image signals, which are smaller than a predetermined value. Elimination of such residues dramatically reduces the amount of compressed data generated for signals including even modest amounts of noise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.