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. 23, 2021
Filed:
Sep. 27, 2017
Intel Corporation, Santa Clara, CA (US);
Sita Rama Chandrasekhar Mallela, Tanjung Bungah, MY;
Mark Bordogna, Andover, MA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Electronic devices coupled to a network may exchange messages containing time-of-day information synchronization of the internal clocks. The information exchanged may include the instant at which a message leaves the electronic device. Discussed herein are methods and systems that allow 1-step timestamping of messages containing time-of-day information. The 1-step timestamping methods and systems may reduce the impact of non-deterministic time delays in the transmit path (e.g., encryption, expansion, inclusion of tags), and may improve the accuracy of the time-of-day information of the packets. For example, systems and methods may allow accurate 1-step timestamping of IEEE 1588 Precision Time Protocol packets with the uncertainty of delays from MACSec encryption or other security mechanisms. Some embodiments employ estimation non-deterministic delay of previously transmitted packets to estimate the state of the transmit path. Some embodiments include communication channels to allow circuitry in transmit path to report the state.