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:
Nov. 23, 2021
Filed:
May. 15, 2019
Siemens Aktiengesellschaft, Munich, DE;
Michael Hegmann, Schwabach, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A control device of a machine or system data compares access data with a current access authorization. If there is a match, access to user data stored in the control device is permitted. The control device occasionally accepts encrypted verification data from an external computer via a network and stores them encrypted or unencrypted as current verification data, with the current access authorization being derived from the unencrypted current verification data. Verification data already stored in the control device as current verification data when the verification data are accepted are retained as old verification data, while older verification data are overwritten. The accepted access data are compared with an old access authorization derived from the old verification data. An operator can access the user data only if there is a match with the old access authorization.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile