Drowsiness/alertness monitor
US6091334A · kind A · utility
121Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1998 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Sep 4, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/4809
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for analyzing drowsiness of a subject. The monitor measures motion of the head of the subject and of one or both eyes of the subject in at least one dimension and derives at least one physiological indication such as gaze stability, saccade speed, saccade frequency, blink duration, and instrument-world scanning performance of the subject. The physiological indicator or indicators are compared with predetermined ranges of acceptable values in such a manner as to determine an onset of drowsiness in the subject.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.