Patent ID: 11907795
Assignee: TOSHIBA TEC KABUSHIKI KAISHA
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A wireless tag communication device including an antenna configured to transmit a carrier wave and receive a response wave output from a wireless tag with respect to the carrier wave, and configured to specify a position of the wireless tag to be searched based on a radio wave intensity of the response wave received by the antenna, the wireless tag communication device further comprising:
a radio wave controller configured to switch the carrier wave between a first carrier wave to be transmitted in a first polarization direction and a second carrier wave to be transmitted in a second polarization direction;
a comparator configured to compare a radio wave intensity of a first response wave output by the wireless tag with respect to the first carrier wave and a radio wave intensity of a second response wave output by the wireless tag with respect to the second carrier wave,
the radio wave controller being configured to switch the carrier wave between the first carrier wave and the second carrier wave based on a comparison result of the comparator,
the radio wave controller is configured to set an output mode of the carrier wave transmitted from the antenna to a dual polarization mode in which the first carrier wave and the second carrier wave are alternately transmitted or to a single polarization mode in which only one of the first carrier wave and the second carrier wave is transmitted; and
a receiver configured to receive identification information that identifies the wireless tag to be searched, wherein
the radio wave controller sets the output mode to the single polarization mode when a search for the wireless tag identified by the identification information received by the receiver is started.