US 12,086,677 B2
Radio frequency identification method and reader
Dongsheng Wang, Guangzhou (CN); Shian Shen, Shenzhen (CN); and Yiran Huang, Shenzhen (CN)
Assigned to SHENZHEN IDATA INFORMATION TECHNOLOGY CO., LTD, Shenzhen (CN)
Appl. No. 18/089,153
Filed by SHENZHEN IDATA INFORMATION TECHNOLOGY CO., LTD, Shenzhen (CN)
PCT Filed Jul. 7, 2021, PCT No. PCT/CN2021/105046
§ 371(c)(1), (2) Date Dec. 27, 2022,
PCT Pub. No. WO2023/279299, PCT Pub. Date Jan. 12, 2023.
Prior Publication US 2024/0273319 A1, Aug. 15, 2024
Int. Cl. G06K 7/10 (2006.01)
CPC G06K 7/10386 (2013.01) 20 Claims
OG exemplary drawing
 
1. A reader, comprising:
a laser unit, an antenna unit and a processor, wherein the laser unit is configured to emit an aiming light spot to aim at a target electronic tag, and to measure a distance between the target electronic tag and the reader, and the antenna unit is configured to receive a radio frequency emitted by the target electronic tag, when the antenna unit only receives a radio frequency signal transmitted by one electronic tag, the reader reads the electronic tag; when the antenna unit receives radio frequency signals transmitted by a plurality of electronic tags, the processor filters out the target electronic tag among the plurality of electronic tags according to the matching degree between the distance d measured by the laser unit and the phase values of the radio frequency signals received by the antenna unit.