Adjusting RFID waveform shape in view of signal from another reader
US7436308B2 · kind B2 · utility
22Cited by
39References
71Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2006 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Jan 13, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0723
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems, software, devices, and methods are described for an RFID reader system to communicate with RFID tags. RF energy encountered in conjunction with using a selected channel is detected. The RF energy can be a signal from another RFID reader. The detected signal is used to adjust a waveform shaping parameter. RF waves can be transmitted from the reader to the RFID tags and RF waves can be backscattered from the RFID tags. At least some of the RF waves transmitted to or backscattered from the RFID tags have a waveform with a shape according to the adjusted waveform shaping parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.