RFID system components implementing adjusted backscatter calculations and methods
US7472835B2 · kind B2 · utility
18Cited by
18References
70Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2005 |
| Grant date | Jan 6, 2009 |
| Priority date | — |
| Expiry date | Jan 2, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03J1/0058
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
RFID system components, such as readers and tags, communicate by a reader transmitting waveforms that encode a calibration symbol and a divide ratio. Tags include a processor to determine a backscatter link period result by dividing a count value representing the calibration symbol by the divide ratio and adding an adjustment. Tags modulate a backscatter waveform that includes symbols using a link period determined from the result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.