Detectable components and detection apparatus for detecting such components
US7469838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 9, 2004 |
| Grant date | Dec 30, 2008 |
| Priority date | — |
| Expiry date | Sep 24, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07D7/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A detectable component has a first inductive coupler (L;M) adapted to couple inductively to a second inductive coupler (L1) of a detection apparatus when the detectable component is in range of or coupled to the detection apparatus. The first inductive coupler has a resistive component (M) with a resistance that varies with magnetic field to cause modulation of a carrier signal supplied to the second inductive coupler of the detection apparatus, the detectable component having a characteristic signature that enables the detectable component to be distinguished by the detection apparatus from other such detectable components having different characteristic signatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.