US 12,093,773 B2
Rfid tag communication device
Sunao Tsuchida, Mishima Shizuoka (JP); and Sadatoshi Oishi, Fuji Shizuoka (JP)
Assigned to Toshiba Tec Kabushiki Kaisha, Tokyo (JP)
Filed by Toshiba Tec Kabushiki Kaisha, Tokyo (JP)
Filed on Mar. 17, 2023, as Appl. No. 18/185,990.
Application 18/185,990 is a continuation of application No. 17/314,594, filed on May 7, 2021, abandoned.
Claims priority of application No. 2020-113942 (JP), filed on Jul. 1, 2020.
Prior Publication US 2023/0229875 A1, Jul. 20, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06K 7/10 (2006.01)
CPC G06K 7/10356 (2013.01) [G06K 7/10267 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A wireless tag communication device, comprising:
a first antenna configured to emit radio waves towards a first region of a conveyance path for wireless tags;
a second antenna configured to emit radio waves towards a second region of the conveyance path on a downstream side of the first region in a tag conveyance direction along the conveyance path;
a first shield configured to block the radio waves emitted from the first antenna from reaching a first portion of the first region while permitting the radio waves from the first antenna to reach a second portion of the first region;
a switch connected to the first and second antennas;
a tag reader/writer connected to the switch; and
a controller configured to:
select a tag ID read from a wireless tag on the conveyance path via the first antenna as a target tag ID,
designate the target tag ID by communication via the second antenna,
write tag information via the second antenna to the wireless tag corresponding to the designated target tag ID, and
control the switch to selectively connect the tag reader/writer to the first or second antenna.