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:
May. 21, 2019
Filed:
Mar. 04, 2016
Marvell International Ltd., Hamilton, BM;
Ramya Krishna Devineni, Fremont, CA (US);
Donald Pannell, Cupertino, CA (US);
Hong Yu Chou, Saratoga, CA (US);
Samuel Kong, Cupertino, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
A network device is provided and includes a physical layer module and a control port. The physical layer module includes one or more ports, which: receives and alters a first synchronization frame to include a timestamp indicating a received time. The control port: receives the first synchronization frame from the one or more ports; provides the first synchronization frame to a control module; and receives, from the control module a second synchronization frame including the timestamp and a follow up frame corresponding to the second synchronization frame. The one or more ports: receives the second synchronization and follow up frames from the control port and transmits the received frames from the network device; and generates an egress timestamp for the second synchronization frame and updates a timestamp field of the follow up frame or calculates a residence time and updates a correction field of the follow up frame.