Title: Media clock synchronization based on PTP
Authors : Heinzmann, Stefan
Weibel, Hans
Proceedings: 44th Audio Engineering Society International Conference 2011 : Audio networking
Conference details: Audio Engineering Society - AES 44th International Conference, San Diego, November 18-20, 2011
Publisher / Ed. Institution : Curran
Issue Date: 2012
License (according to publishing contract) : Licence according to publishing contract
Type of review: Not specified
Language : English
Subjects : Networked Audio; Accurate Clock Distribution; Ravenna; Time Synchronization
Subject (DDC) : 004: Computer science
Abstract: The Precision Time Protocol (PTP) according to IEEE 1588 and its variants are increasingly being used as the basis for achieving accurate media clock distribution and synchronization in media networks. This article introduces the principles of PTP with a view towards media clock synchronization, and gives an overview of requirements for media clock distribution in a network. We show how PTP can be harnessed for reconstructing media clocks locally in each network node in such a way that those requirements can be met. We discuss different strategies for clock synthesis and distribution, their application area, and the impact on the implementation of a node. We finally discuss two existing media network frameworks (AVB and RAVENNA) which both utilize PTP for media clock synchronization, and analyze the commonalities and differences between them.
Departement: School of Engineering
Organisational Unit: Institute of Embedded Systems (InES)
Publication type: Conference Paper
ISBN: 978-1-62276-006-0
URI: https://digitalcollection.zhaw.ch/handle/11475/10911
Appears in Collections:Publikationen School of Engineering

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