Method and apparatus for multiplexed vector quantization
US4922508A · kind A · utility
36Cited by
7References
35Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 25, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Oct 25, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/94
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vector quantization method and apparatus utilizes a plurality of codebooks each of which has a predetermined number of candidate vectors. A distortion between each input vector and an averaged vector of a set of candidate vectors, each selected from one of the codebooks, is calculated for all combinations of candidate vectors, and a combination of candidate vectors which provides the smallest distortion is determined. Codes representing the candidate vectors thus determined are multiplexed, thereafter being outputted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.