Patent ID: 7604167

Claim:
A wireless display tag comprising: an active transceiver coupled to an antenna; a backscatter transceiver, separate from the active transceiver, coupled to the antenna, the combination of the active transceiver and the backscatter transceiver allowing for transmission of signals of varying power ranges from the wireless display tag to reduce the power consumption of the wireless display tag; a battery; a solar cell for charging the battery or powering the wireless display tag; digital logic having a transmitter interface and a receiver interface for coupling to the active transceiver and the backscatter transceiver and adapted to control communications; and an analog-circuit coupled to the digital logic, each of which is coupled to the active transceiver and the backscatter transceiver, wherein the digital logic is operative to selectively switch between using the active transceiver and the backscatter transceiver thereby reducing power consumption of the wireless display tag; wherein the wireless display tag is adapted to fit within the C channel of a shelf edge.