Applique nodes for performance and functionality enhancement in radio frequency identification systems
US8217760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2009 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Oct 28, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S13/74
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an RFID system with existing reader and tags communicating with each other, appliqués derive information by listening to this communication to yield significant performance benefits, while not affecting the communication between the existing nodes. For example, an appliqué capable of receiving beamforming can estimate the angle of arrival of the signal emitted by a tag, thereby providing information that can be used to localize the tag. An appliqué may be connected to an existing reader by means of an existing port, such as to an antenna port or to an Ethernet port. The information from appliqués can be integrated with that obtained from existing nodes at either the appliqués, or further up the hierarchy in middleware.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.