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:
Dec. 08, 2020
Filed:
May. 20, 2019
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 Asia Pte, Ltd., Singapore, SG;
Abstract
A switching device is provided and includes a processor and a physical layer device. The processor is configured to generate a synchronization frame and a corresponding follow up frame. The follow up frame is generated while or subsequent to the generating of the synchronization frame and without waiting for an egress timestamp indicating when the synchronization frame is to be transmitted from the switching device to a network device. The physical layer device is configured to: receive the synchronization and follow up frames from the processor; prior to transmitting the follow up frame to the network device, modify the follow up frame to include the egress timestamp indicating when the synchronization frame is transmitted from the switching device via the physical layer device; and perform a precision time protocol process including transmitting the synchronization and follow up frames from the switching device to the network device for clock synchronization.