Method and system for detecting a specific relative position between two objects
US10802172B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2017 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Oct 22, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10455
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for detecting a specific relative position between a reader and a receiver, including: an inductive contactless receiver including an antenna winding and a circuit for selectively modulating a load; an inductive contactless reader including: a transceiver antenna circuit having nonzero mutual inductance with the antenna winding for the position, a communication circuit connected to the transceiver antenna circuit, a receiver antenna circuit having mutual inductance with the antenna winding that exhibits a minimum for the position, and a processing circuit for: identifying presence of a receiver by detecting nonzero mutual inductance between the transceiver antenna circuit and an antenna winding, and detecting a mutual inductance minimum between the receiver antenna circuit and an antenna winding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.