Systems and methods to determine motion parameters using RFID tags
US8242888B2 · kind B2 · utility
18Cited by
29References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 5, 2008 |
| Grant date | Aug 14, 2012 |
| Priority date | — |
| Expiry date | Apr 25, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13095
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods to determine motion parameters of physical objects using radio frequency identification (RFID) tags attached to the objects. In one embodiment, a method implemented in a radio frequency identification (RFID) system includes determining a motion parameter of the RFID tag based on detecting a Doppler frequency shift in a radio frequency signal received from the RFID tag.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.