Memory based vector quantization
US5300931A · kind A · utility
11Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1987 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Sep 4, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/008
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Apparatus is provided for performing two stages of high-speed compression of vector data inputs. Two input channels of vector data are compressed and encoded through a vector quantizer encoder to provide a first stage of data compression. The output of the first encoder is further decoded then compressed and encoded in a novel high-speed computing mapping means which may be implemented in the form of a look-up table. Vector quantized encoded output is double the previous data compression of a single stage. The second stage of data compression causes very little degradation of the data from the first stage of data compression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.