Patent ID: 7525436

Claim:
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.