Dimensional vector and variable resolution quantization
US7680670B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 30, 2004 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Nov 9, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L19/097
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates to compression coding and/or decoding of digital signals, in particular by vector variable-rate quantisation defining a variable resolution. For this purpose an impulsion dictionary comprises: for a given dimension, increasing resolution dictionaries imbricated into each other and, for a given dimension, a union of: a totality (D′i<N>) of code-vectors produced, by inserting elements taken in a final set (A) into smaller dimension code-vectors according to a final set of predetermined insertion rules (F1) and a second totality of code-vectors (Y′) which are not obtainable by insertion into the smaller dimension code vectors according to said set of the insertion rules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.