Systems and methods for controlling radio-frequency indentification (RFID) tag communication
US9990518B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 4, 2016 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Nov 4, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10019
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Systems and methods for radio-frequency identification (RFID) tag communication are provided. One radio-frequency identification (RFID) tag includes a communication device configured to communicate with an RFID reader and an impedance element configured to change an variable impedance of the RFID tag. The RFID tag further includes at least one switch connected to the impedance element and a controller connected to the at least one switch and configured to control operation of the switch between open and closed states based on a control signal received from the RFID reader, wherein the variable impedance of the RFID tag is changed between a first modulating impedance value and a second modulating impedance value when the switch is changed between the open and closed states.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.