Patent ID: 9471894
Filing Date: 2016-10-18
CPC Classification: G01C,G05D,G06F,G06K,G06Q

Claim Text:
1. A system for managing inventory items, comprising: a plurality of fiducial markers distributed in a pattern on a floor of an inventory facility, each of the plurality of fiducial markers encoding respective fiducial value information using a readable code and at least one attribute of the fiducial marker, the at least one attribute including at least one of: (a) an orientation of the fiducial marker relative to a reference direction, (b) a color of the fiducial marker, (c) a size of the fiducial marker, or (d) a shape of the fiducial marker; and a drive unit including an image capture device configured such that a respective subset of the plurality of the fiducial markers can be imaged by the image capture device for each of a plurality of respective locations of the drive unit on the floor, the drive unit being configured to: (a) capture at least one image of a subset of the plurality of the fiducial markers, (b) determine or receive a location of the drive unit, the location being based on processing of the at least one captured image, and (c) move the drive unit based at least in part on the at least one captured image.