US 12,353,942 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 Aug. 19, 2024, as Appl. No. 18/808,294.
Application 18/808,294 is a continuation of application No. 18/185,990, filed on Mar. 17, 2023, granted, now 12,093,773.
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 2024/0412013 A1, Dec. 12, 2024
Int. Cl. G06K 7/10 (2006.01)
CPC G06K 7/10356 (2013.01) [G06K 7/10267 (2013.01)] 14 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, the first region being where the first antenna can communicate with the wireless tags being conveyed along the conveyance path;
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, the second region being where the second antenna can communicate with the wireless tags being conveyed along the conveyance path;
a shield configured to block the radio waves from the first antenna to the wireless tags in a middle portion of the first region so the first antenna is unable to communicate with wireless tags in the middle portion of the first region; 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, wherein
the controller selects the target tag ID of a wireless tag that has passed through the middle portion of the first region and was thus temporarily unable to be read via the first antenna from among tag IDs of all the wireless tags read via the first antenna.