Adaptive digitizer circuit for information processing system
US4569028A · kind A · utility
6Cited by
10References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1983 |
| Grant date | Feb 4, 1986 |
| Priority date | — |
| Expiry date | Jun 24, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adaptive digitizer circuit for an information processing system includes an entropy filter responsive to an information signal V having a variable noise .sigma..sub.V that is a function of V, for providing a transform signal T, having a constant transform noise level .sigma..sub.T throughout its dynamic range; and an analog to digital converter in which the ratio .sigma..sub.T /.delta..sub.T of the noise level .sigma..sub.T of the transformed signal and the digitization interval .delta..sub.T is constant throughout the dynamic range of T.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.