Patent ID: 7295115

Claim:
A wireless identification tag, comprising: a battery for powering internal circuits of said tag; a transmitter for transmitting signals encoding at least an identifier of said tag; a receiver for receiving system signals from an external system in communication with said tag, wherein said system signals include a tag address; and a timer for activating said receiver for a predetermined period of time subsequent to said transmitter transmitting said signals, whereby said system signals are received by said tag during a predictable window subsequent to transmissions of said tag, and whereby power consumption from said battery is further conserved; a storage for storing parameters of said tag, said parameters including one or more values corresponding to: said predetermined period of time, a period of said transmitted signals, a start time of said transmitted signals and an amplitude of said transmitted signals, and wherein said transmitter produces said transmitted signals in conformity with said stored parameters, when the period of said transmitted signal is shortened.