Predictive signal coding with partitioned quantization
US4354057A · kind A · utility
23Cited by
6References
10Claims
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Key dates
| Filing date | Apr 8, 1980 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Apr 8, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/66
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a communication system an input predictive type signal is analyzed in successive time intervals to generate a set of prediction signals for the interval. A predictive residual signal is produced jointly responsive to the input signal and the interval prediction signals. The predictive residual signal is quantized and encoded. The quantization includes dividing the predictive residual signal into a plurality of distinct portions and selectively quantizing the distinct portions to improve intelligibility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.