The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2026
Filed:
Nov. 12, 2021
Udmtek Co., Ltd., Suwon-Si, KR;
Gi Nam Wang, Yongin-Si, KR;
Jun Pyo Park, Suwon-Si, KR;
Sang Chul Yoo, Osan-Si, KR;
Kang Hee Han, Suwon-Si, KR;
Seung Woo Han, Hwaseong-Si, KR;
Yeon Dong Kim, Suwon-si, KR;
Nam Ki Kim, Suwon-Si, KR;
UDMTEK CO., LTD., Suwon-Si, KR;
Abstract
A method of inspecting a programmable logic controller (PLC) control logic using a graphic neural network (GNN) generally includes three operations: a data preprocessing operation for a GNN, an operation of predicting whether tags are connected, and an operation of verifying suitability of edge connections between tags. As a result, a graph is generated from a PLC control logic and input to a link prediction model to find an incorrect connection in the PLC control logic. Subsequently, a result graph output through the link prediction is input to a trained model to verify edge connection suitability between tags. Then, it may be finally verified whether tags are connected in the PLC control logic.