US 12,353,931 B2
RFID label printer and method for reading and writing RFID label
Xiong Liu, Hanchuan (CN); Yongqiang Zhang, Wuhan (CN); Hao Yu, Wuhan (CN); Jianwen Jiang, Wuhan (CN); and Zhe Zhang, Wuhan (CN)
Assigned to Wuhan Jingchen Intelligent Identification Technology Co., Ltd., Wuhan (CN)
Filed by Wuhan Jingchen Intelligent Identification Technology Co., Ltd., Wuhan (CN)
Filed on Feb. 1, 2024, as Appl. No. 18/430,425.
Claims priority of application No. 202311051606.3 (CN), filed on Aug. 21, 2023.
Prior Publication US 2025/0068862 A1, Feb. 27, 2025
Int. Cl. G06K 7/00 (2006.01); G06K 1/12 (2006.01)
CPC G06K 1/121 (2013.01) 9 Claims
OG exemplary drawing
 
1. An RFID label printer, comprising: a first antenna, a paper cartridge and a control module for reading and writing, the paper cartridge is used to accommodate a label roll paper, the label roll paper includes a plurality of labels having a first RFID chip, and the control module for reading and writing is configured to perform steps of reading and writing including:
controlling the label to travel to a preset position for reading and writing, and controlling the first antenna to recognize the first RFID chip of the label with a first preset power;
if a unique first RFID chip is not recognized, a power for reading and writing is progressively increased from the first preset power until the unique first RFID chip is recognized, otherwise, this step is skipped;
acquiring an identification code of the unique first RFID chip, assigning the identification code to the first antenna, and reading and writing the first RFID chip corresponding to the identification code with a second preset power, wherein the second preset power is greater than the first preset power and greater than a power when the unique first RFID chip is recognized; and
wherein progressively increasing the power for reading and writing from the first preset power includes providing a power increment rule, so that the power for reading and writing is increased from the first preset power according to the power increment rule.