Amplitude-adaptive vector quantization system
USRE34562E · kind E · reissue
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Key dates
| Filing date | Sep 18, 1991 |
| Grant date | Mar 15, 1994 |
| Priority date | — |
| Expiry date | Sep 18, 2011 |
Classification
- Technology area (CPC —)General
Abstract
An amplitude-adaptive vector quantization system intended for efficient signal coding and decoding. A mean value separation circuit (2) separates the mean value from an input signal which has been divided into blocks, and a tree-search vector quantizer (6) implements tree-search inner product vector quantization so that index information is truncated depending on the detected vector amplitude, thereby reducing the volume of information for transmission.
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