Encoder and decoder with improved quantizer using reserved quantizer level for small amplitude signals
US5402124A · kind A · utility
18Cited by
3References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1992 |
| Grant date | Mar 28, 1995 |
| Priority date | — |
| Expiry date | Nov 25, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/66
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention relates in general to the quantization of digital signal information. More particularly, the invention relates to the reduction of perceptible effects of quantizing noise by reserving a special quantizing level for low-level signals in encoding and decoding applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.