Patent ID: 8570157

Claim:
An RFID reader system for receiving and processing RFID tag responses, comprising: a first layer; and a second layer, in which the first layer is configured to: receive a postselect mask from the second layer; inventory a tag population at a transmit power; receive a tag response; if the response does not meet a preselect criterion, then discard the response; else report the response; and apply a postselect criterion by comparing the response to the postselect mask; if the response meets the postselect criterion then pause the inventory and handing off control from the first layer to the second layer; receive instructions from the second layer; and if the instructions include performing an access operation on the tag, then: determine an amount by which to increase the transmit power for the access operation; increase the transmit power by the determined amount; perform the access operation based on the instructions; then decrease the transmit power; then continue to inventory the tag population.