Processes, apparatuses, and systems of encoding and decoding signals using transforms
US5729484A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1995 |
| Grant date | Mar 17, 1998 |
| Priority date | — |
| Expiry date | May 22, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/187
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A signal is encoding, in part, by generating the transform of the signal in a transform domain. The coefficients of the transformed signal are then ordered according to a statistical model of the transform. Decoding of the encoded signal generates progressively accurate approximations of the fully reconstructed signal. If, for some reason, decoding is truncated, a useable partial result will nevertheless be available. In a preferred embodiment, natural image signals are encoded by ordering the coefficients of the transformed signal generated by applying a discrete cosine transform. Decoding of the encoded signals generates progressively accurate approximations of the fully reconstructed image. The invention has particular application to systems with limited and/or variable transmission, storage, and/or decode processing bandwidth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.