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. 15, 2016
Filed:
Sep. 05, 2012
James M. Hollabaugh, San Jose, CA (US);
Girault W. Jones, Jr., Los Gatos, CA (US);
James M. Hollabaugh, San Jose, CA (US);
Girault W. Jones, Jr., Los Gatos, CA (US);
APPLE INC., Cupertino, CA (US);
Abstract
A system for verifying clock synchronization between master and slave network equipment is provided. The master includes a transmitter, first control logic, and a first processor. The slave includes a receiver, second control logic, and a second processor. The transmitter may send synchronization packets to the receiver. When a synchronization packet is sent, the first control logic forwards a first timestamp sample to the first processor. In response to receiving a synchronization packet, the receiver may generate a second timestamp sample that is forwarded to the second processor. When a number of first timestamp samples are collected at the first processor, the transmitter may send a timestamp packet to the receiver. In response to receiving the timestamp packet, the receiver may compare the first and second timestamp samples in an effort to synchronize a slave reference clock in the slave to a master reference clock in the master.