Body movement and respiration monitor
US7431700B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 6, 2001 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Oct 13, 2023 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/726
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A monitor which can detect respiration of a sleeping person without being affected by the attitude of the sleeping person or the indoor illumination light and can easily evaluate detected respiration quantitatively through image measurement. The monitor comprises means (1) for projecting a specified illumination pattern, means (5) for picking up the image of projected light continuously, means (7) for calculating inter-frame moving amount of the illumination pattern from the image of two frames acquired by the image pickup means at different times, means (8) for generating a moving amount waveform data comprising inter-frame moving amounts arranged in time series, and means (9) for detecting the movement of an object from the moving amount waveform data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.