Patent ID: 11910275
Assignee: MOTOROLA MOBILITY LLC
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 7:
8. A data processing device comprising:
a module that transmits a trigger signal, at a first frequency range, that propagates into a space to determine if one or more tags exist in the space within a detectable distance; and
a processor that is communicatively coupled to the module and which:
receives at least one radio frequency identification (RFID) response signal from a tag antenna corresponding to a respective tag of an object in a space located within a detectable distance of the user device, each RFID response signal having a unique tag identification (ID) of the respective tag modulated thereon;
in response to receiving the corresponding RFID response signal from the respective tag within the space, identifies a directional location of the respective tag relative to the user device, the directional location including a general horizontal position within the space and a general vertical position within the space;

estimates, based on a signal strength and the directional location of the corresponding RFID response signal, a distance of the respective tag relative to the user device;
correlates the directional location and distance of the respective tag to generate a more precise point location of the object within the space; and
outputs the corresponding distance and horizontal and vertical position information to provide the more precise point location of the object within the space.