Signal processing system
US4462081A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1982 |
| Grant date | Jul 24, 1984 |
| Priority date | — |
| Expiry date | Apr 5, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F17/18
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and a related method for generating an estimate of the current state of an information source based upon the observed current and previous states of a related signal and on estimates of the effects of noise. The apparatus includes a state change probability matrix defining the probabilities of all possible state changes that the source is capable of assuming, states, a noise model for generating a set of probabilities indicative of the likelihood that an observed value of the signal would have occurred if the source were in each of its possible states, and circuitry for combining the set of probabilities from the noise model with the set of probabilities from the state change matrix, to provide a probability distribution indicative of the current underlying value of the source. The apparatus also includes a normalization circuit to maintain the sum of the probabilities in the resultant distribution at unity, and an appropriate circuit for computing an estimate of the underlying source state from the probability distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.