Vector quantization method employing mirrored input vectors to search codebook
US5204899A · kind A · utility
20Cited by
9References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Nov 19, 1991 |
| Grant date | Apr 20, 1993 |
| Priority date | — |
| Expiry date | Nov 19, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/94
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vector quantization me employs mirrored input vectors to increase the reproduction quality of transmitted vector quantized data. A codevector is selected from a vector quantization codebook for each possible orientation of an input vector. The codevector having the smallest distortion relative to the input vector is selected for transmission. An identification code identifying the selected orientation is also transmitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.