Patent ID: 9400971
Filing Date: 2016-07-26
CPC Classification: G06K,G06Q

Claim Text:
1. A computer-implemented method, comprising: instructing an autonomous mobile drive unit to move an inventory holder to a first position relative a radio frequency reading structure, the inventory holder detachably coupled to the autonomous mobile drive unit and including a plurality of inventory items stowed in the inventory holder; initiating two or more antennas attached to the radio frequency reading structure, a first antenna of the two or more antennas aligned in a first direction and a second antenna of the two or more antennas aligned in a second direction, the first direction different from the second direction; reading, via the two or more antennas, a first radio-frequency identification (RFID) tag associated with a first inventory item when the autonomous mobile drive unit and the inventory holder are located at the first position, the first inventory item stowed in the inventory holder; and responsive to reading the first RFID tag, instructing the autonomous mobile drive unit to rotate the inventory holder to a second position relative to the two or more antennas; and reading, via the two or more antennas, a second RFID tag associated with a second inventory item when the autonomous mobile drive unit and the inventory holder are located at the second position, the second inventory item stowed in the inventory holder.