Method for activating a vehicle function and associated activation device
US12012067B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2022 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Apr 5, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C2209/63
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for activating a function of a motor vehicle by an activation device on the vehicle having at least one communication unit including at least one radiofrequency antenna and transmission and reception device. The activation coming from a user's portable device. The activation of the function is triggered by detection of the user's presence in a predetermined zone around the vehicle and on the basis of a result of authentication of the portable device by the vehicle. For at least two responses received from the portable device: a) comparing, for each response, a power of a first wave received at a time with a maximum power of the components of the first wave received, b) determining, for each response, a presence or absence of reflected waves, c) determining an averaged reflection rate for the responses, d) determining a minimum value for the time from the responses, e) if the averaged reflection rate is zero or full, then the user's presence in the predetermined area is determined using the minimum value for the time, f) if the averaged reflection rate is partial, then the user's presence in the predetermined area is detected using the minimum value for the time, to which a…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.