Patent ID: 11915091
Assignee: TOSHIBA TEC KABUSHIKI KAISHA
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 12:
13. A wireless tag communication device comprising:
a directional antenna;
a communication control circuit configured to communicate with a wireless tag through the directional antenna;
a camera positioned to capture an image including an area in which a signal strength of the directional antenna is maximized; and
a controller configured to:
estimate a tag direction from the wireless tag communication device to the wireless tag;
estimate a position of the wireless tag communication device;
estimate a position of the wireless tag based on the estimated tag direction and the estimated position of the wireless tag communication device;
control a display to display an indicator showing an explicit area containing the estimated position of the wireless tag superimposed on the image captured by the camera; and
at least one of:
increase a size of the explicit area in response to a decrease in a distance between the estimated position of the wireless tag and the estimated position of the wireless tag communication device; or
decrease the size of the explicit area in response to an increase in the distance between the estimated position of the wireless tag and the estimated position of the wireless tag communication device.