Signal verification device
US6317507A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 26, 1999 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | May 26, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10L15/144
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to a device for the verification of time-dependent, user-specific signals which includes PA1 means for generating a set of feature vectors which serve to provide an approximative description of an input signal and are associated with selectable sampling intervals of the signal; PA1 means for preparing an HMM model for the signal; PA1 means for determining a probability value which describes the probability of occurrence of the set of feature vectors, given the HMM model, and PA1 a threshold decider for comparing the probability value with a threshold value and for deciding on the verification of the signal. For better adaptation of the verification to the relevant user and the user-specific signals assigned thereto, it is proposed to provide means for the automatic person-specific evaluation of the relevance of the features collected in the feature vectors by way of an LDA transformation and for the automatic selection of features evaluated as relevant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.