US 12,271,776 B2
Reader apparatus and control method with cancelation circuit
Naohiro Matsushita, 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 Nov. 21, 2022, as Appl. No. 17/991,562.
Claims priority of application No. 2022-078224 (JP), filed on May 11, 2022.
Prior Publication US 2023/0367981 A1, Nov. 16, 2023
Int. Cl. G06K 7/10 (2006.01); H04B 1/04 (2006.01); H04L 25/49 (2006.01)
CPC G06K 7/10009 (2013.01) [H04B 1/04 (2013.01); H04L 25/49 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A reader apparatus comprising:
a transmission circuit configured to transmit a query wave that is obtained by modulating a carrier wave with a modulation signal representing a command to be transmitted to a first responder, the first responder being a reader talk first (RTF) tag;
a cancellation circuit configured to cancel a modulation component corresponding to the modulation signal from a response wave transmitted using a backscattering method from a second responder, the second responder being a tag talk first (TTF) tag; and
a decoding circuit configured to decode data represented by the response wave from which the modulation component is canceled by the cancellation circuit.