System and method for observing a person's walking activity
US8977522B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Mar 29, 2010 |
| Grant date | Mar 10, 2015 |
| Priority date | — |
| Expiry date | Jan 23, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG16H50/20
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A system for observing a walking activity of a person comprises a device (DISP) adapted for delivering at output, for a footstep of the person, a first difference of angular speeds of the corresponding tibia between the instant at which the heel of the foot is planted and the instant at which the foot is laid flat, a second difference of angular speeds of the corresponding tibia between the instant at which the heel of the foot is planted and the instant at which the last toe of the foot is lifted, and an angular speed of the corresponding tibia at the instant at which the foot is laid flat. The system comprises analysis means (AN) for analyzing the signals delivered by the device and adapted for determining a type of walking of the user as a function of time by using a hidden Markov model with N states corresponding respectively to N types of walking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.