Vector quantizer
US4670851A · kind A · utility
125Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 22, 1984 |
| Grant date | Jun 2, 1987 |
| Priority date | — |
| Expiry date | Oct 22, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/50
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vector quantizer for quantizing the vector of image and audio information, the vector quantizer being capable of efficiently encoding a compensation predictive error signal at a reduced bit rate by performing adaptive vector quantization after judging the significance of the compensation predictive error signal in blocks, and capable of movement compensation inter-frame vector encoding in which variable-length encoding of movement vector is facilitated and information production control is achieved easily.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.