Method and apparatus for quantizing a signal in a digital system
US6128346A · kind A · utility
31Cited by
4References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1998 |
| Grant date | Oct 3, 2000 |
| Priority date | — |
| Expiry date | Apr 14, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/124
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An input data signal (102) in a digital signal processing system gets adaptively quantized by performing a LMS error algorithm on a signal of transformed coefficients (113), determining paths of minimum error (202), and forming a three-dimensional matrix (206) representing these paths. Centroids are computed (208) based on the paths of minimum error (206), and these computed centroids are used as part of a next iteration to represent new quantization states and levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.