US 2007/0176752 A1 · METHODS AND APPARATUS FOR REDUCING POWER CONSUMPTION OF AN ACTIVE TRANSPONDER

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.

Claims16

Dependent claims

A method of managing power consumption in a transponder having a plurality of circuits including at least a first circuit having a first active state requiring at least a first level of power, and a second circuit having a second active state requiring at least a second level of power, wherein said second level of power is greater than said first level of power, the method comprising:

receiving a reader signal sent by a reader device in said first circuit;
determining in said first circuit, based on information included in said reader signal, whether said reader signal requires one of said plurality of circuits other than said first circuit to operate;
and
causing said first circuit to provide a wake-up signal to said second circuit and causing said first circuit to provide said reader signal to said second circuit if it is determined that said reader signal requires one of said plurality of circuits other than said first circuit to operate, said wake-up signal causing said second circuit to move from an inactive state to said second active state.

1 more element

A transponder apparatus, comprising:

a plurality of circuits including at least a first circuit having a first active state requiring at least a first level of power, and a second circuit having a second active state requiring at least a second level of power, wherein said second level of power is greater than said first level of power;
wherein said first circuit is structured to:
(i) receive a reader signal sent by a reader device, (ii) determine, based on information included in said reader signal, whether said reader signal requires one of said plurality of circuits other than said first circuit to operate, and (iii) provide a wake-up signal to said second circuit and provide said reader signal to said second circuit if it is determined that said reader signal requires one of said plurality of circuits other than said first circuit to operate, said wake-up signal causing said second circuit to move from an inactive state to said second active state.

Dependencies are inferred from the claim text.

Methods and apparatus for reducing power consumption of an active transponder

Life of this patent

Methods and apparatus for reducing power consumption of an active transponder

Life of this patent

Abstract

Claims16