Vector quantizer with first quantization using input and base vectors and second quantization using input vector and first quantization output
US5978758A · kind A · utility
4Cited by
6References
6Claims
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Key dates
| Filing date | Jul 10, 1997 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Jul 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L2019/0005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A first vector quantizer generates output codevectors corresponding in number to a number determined by a predetermined number of bits through linear coupling of integer coefficients of a predetermined number of base vectors stored in a base vector memory. A second vector quantizer determines coefficients of the base vectors according to at least one of output indexes of the output codevectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.