Apparatus for detecting fatigue and doze by voice, and recording medium
US6876964B1 · kind B1 · utility
4Cited by
13References
6Claims
0Family size
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Key dates
| Filing date | Oct 19, 2000 |
| Grant date | Apr 5, 2005 |
| Priority date | — |
| Expiry date | Feb 23, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2540/21
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for judging a fatigue level and/or a dozing state of a person by capturing voices uttered at different points of time from a microphone 5M. A computer performs chaos analysis of the digital data of the inputted voices and calculates Lyapunov exponents and judges a fatigue level and/or a dozing state based on the result of the chaos analysis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.