Methods and arrangements for a converting a high definition image to a lower definition image using wavelet transforms
US6665343B1 · kind B1 · utility
98Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 11, 1998 |
| Grant date | Dec 16, 2003 |
| Priority date | — |
| Expiry date | Sep 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/63
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Systems are provided for converting high definition pictures or data to lower definition images using wavelet transforms. In the preferred embodiments, the wavelet transforms are be used in either the transmission/coding or reception/decoding phase for enabling a more efficient conversion of the signal and providing a more robust and accurate output. The wavelet transforms may be applied to conventional systems to enhance performance or entire transmission and reception systems may be designed where the wavelet transforms are applied to the data for coding, decoding and decimation operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.