Methods for recovering RFID data based upon probability using an RFID receiver
US9613236B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Apr 4, 2017 |
| Priority date | — |
| Expiry date | Dec 15, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M13/098
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
RFID data signals from RFID tags may be recovered by determining the probabilities of transitions between data states between a series of a pairs of signal samples using a set of predetermined probabilities related to data, timing, baud rate and/or phase variables affecting the received signal and processing those determined probabilities to determine the sequence of such transitions that has the highest probability of occurrence. A second set of predetermined probabilities related to transitions in the opposite direction may be used to sequence in a reverse direction. The determination of the sequence representing the RFID tag data may be iterated in both directions until further iterations do not change the determined probabilities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.