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:
Jun. 10, 2025
Filed:
Apr. 24, 2023
University of Science and Technology Beijing, Beijing, CN;
Ketai He, Beijing, CN;
Xiaowei Meng, Beijing, CN;
Yanxi Li, Beijing, CN;
Dongmei Zhu, Beijing, CN;
Cheng Zhao, Beijing, CN;
University of Science and Technology Beijing China, Beijing, CN;
Abstract
The present disclosure relates to an incremental backup method and system for a CAD engineering data file, and the method includes: chunking historical CAD engineering data based on a sliding window approach, to determine a first data block group; calculating a first hash fingerprint value separately for each data block in the first data block group; chunking, based on the sliding window approach, CAD engineering data to be backed up, to determine a second data block group; calculating a second hash fingerprint value separately for each data block in the second data block group; and determining a backup status of the data block in the second data block group based on the first hash fingerprint value and the second hash fingerprint value. The present disclosure resolves a problem that a long time is occupied when a large-scale engineering CAD data file is saved by applying a full backup.