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Proceedings Paper

Implementation of a media synchronization algorithm for multistandard IP set-top box systems
Author(s): Esther Estévez; David Samper; Fernando Pescador; Eduardo Juárez; César Sanz
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Paper Abstract

Media synchronization at network context minimizes the effects of the network jitter and the skew between the emitter and receiver clocks. Theoretical algorithms cannot always be implemented on real systems for the architecture differences between a real and a theoretical system. In this paper an implementation for an intra-medium and an inter-media synchronization algorithm for a real multistandard IP set-top box is presented. For intra-medium synchronization, the proposed technique is based on controlling the receiver buffer. However for inter-media synchronization, the proposed technique is based on controlling the video playback according the Presentation Time Stamp (PTS) of the media units (audio and video). The proposed synchronizations algorithms has been integrated in an IP-STB and tested in a real environment using DVD movies and TV channels with excellent results. Those results show that the proposed algorithm can achieve media synchronization and meet the requirements of perceived quality of service (P-QoS).

Paper Details

Date Published: 28 May 2009
PDF: 12 pages
Proc. SPIE 7363, VLSI Circuits and Systems IV, 73630L (28 May 2009); doi: 10.1117/12.821641
Show Author Affiliations
Esther Estévez, Univ. Politécnica de Madrid (Spain)
David Samper, Univ. Politécnica de Madrid (Spain)
Fernando Pescador, Univ. Politécnica de Madrid (Spain)
Eduardo Juárez, Univ. Politécnica de Madrid (Spain)
César Sanz, Univ. Politécnica de Madrid (Spain)

Published in SPIE Proceedings Vol. 7363:
VLSI Circuits and Systems IV
Teresa Riesgo; Eduardo de la Torre; Leandro Soares Indrusiak, Editor(s)

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