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:
Feb. 10, 2026
Filed:
Aug. 05, 2022
Siemens Aktiengesellschaft, Munich, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In a method for operating a numerical control device for controlling a production machine for producing a workpiece, program instructions generated by CAM software are encrypted with a first encryption key to generate first encrypted program instructions and the first encrypted program instructions are decrypted with a first decryption key to generate first decrypted program instructions. To prevent unauthorized access to the program instructions, the first decrypted program instructions are re-encrypted using a second encryption key to generate second encrypted program instructions, which are stored in a memory of the numerical control device. Subsequently, the second encrypted program instructions are read out of the memory and decrypted record-by-record or block-by-block, such that only those program instructions of the part program which are currently being processed by the numerical control device, or whose processing is imminent and used to control the production machine for the production of the workpiece.