Methods and apparatus for reducing power consumption of an active transponder
US7525436B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2006 |
| Grant date | Apr 28, 2009 |
| Priority date | — |
| Expiry date | Feb 11, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K19/0701
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A power management method for a transponder having a plurality of circuits including at least a first circuit having a first active state requiring at least a first power level, and a second circuit having a second active state requiring at least a second power level greater than the first power level includes receiving a reader device signal in the first circuit, determining in the first circuit, based on information included in the reader signal, whether the reader signal requires a circuit other than the first circuit to operate, and causing the first circuit to provide a wake-up signal and the reader signal to the second circuit if it is determined that the reader signal requires a circuit other than the first circuit to operate. The wake-up signal causes the second circuit to move from an inactive state to the second active state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.