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:
Mar. 11, 2014
Filed:
Sep. 15, 2010
Chongning NA, Beijing, CN;
Dragan Obradovic, Ottobrunn, DE;
Ruxandra Scheiterer, Geretsried, DE;
Guenter Steindl, Poppenricht, DE;
Philipp Wolfrum, München, DE;
Chongning Na, Beijing, CN;
Dragan Obradovic, Ottobrunn, DE;
Ruxandra Scheiterer, Geretsried, DE;
Guenter Steindl, Poppenricht, DE;
Philipp Wolfrum, München, DE;
Siemens AG, Munich, DE;
Abstract
A device and method for time synchronization in a communication network, wherein a virtual clock is produced by a controller in each network node based on the PROFINET-Standard and/or the Precision Transparent Clock Protocol. In contrast to known methods for estimating the time, the time of the virtual clock does not undergo sudden changes. The virtual clock includes a controlled, continuous path. As a result, the virtual clock is particularly suitable for time-critical applications. Here, the estimation of the time of a reference clock is improved by 18-35%. Accordingly, a markedly greater number of network nodes may be synchronized with a predetermined level of accuracy for the time synchronization.