Patent · US Active

Methods and apparatus for switching a transponder to an active state, and asset management systems employing same

US8022826B2 · kind B2 · utility

1Cited by

13References

14Claims

0Family size

Assignee

University of Pittsburgh—Of the Commonwealth System of Higher Education · US

Inventors

Marlin H. Mickle · Pittsburgh, US
Alex Jones · Carlsbad, US
James T. Cain · Pittsburgh, US
Peter J. Hawrylak · Woodstown, US
Frank Marx · Ebhausen, DE
Raymond R. Hoare · Pittsburgh, US

Key dates

Filing date	Dec 9, 2010
Grant date	Sep 20, 2011
Priority date	—
Expiry date	Dec 9, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG06K19/0713
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

A transponder that may be used as an RFID tag includes a passive circuit to eliminate the need for an “always on” active RF receiving element to anticipate a wake-up signal for the balance of the transponder electronics. This solution allows the entire active transponder to have all circuit elements in a sleep (standby) state, thus drastically extending battery life or other charge storage device life. Also, a wake-up solution that reduces total energy consumption of an active transponder system by allowing all non-addressed transponders to remain in a sleep (standby) state, thereby reducing total system or collection energy. Also, the transponder and wake-up solution are employed in an asset tracking system.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.