Lower power battery-assisted RFID tag having improved recognition distance, and wake-up method thereof
US7884723B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2007 |
| Grant date | Feb 8, 2011 |
| Priority date | — |
| Expiry date | Jun 2, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0705
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided are a radio frequency identification (RFID) tag and a wake-up method thereof. The RFID tag includes: a power source that supplies a driving voltage; a continuous wave detector that receives the driving voltage from the power supply so as to detect a continuous wave in a signal received from an RFID tag reader; a command detector that selectively receives the driving voltage and detects a command in the signal; and a controller that executes the command detected by the command detector by supplying the driving voltage to the command detector if the continuous wave is detected, and stops the driving voltage from being supplied to the command detector if no command is received from the command detector for a predetermined time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.