Artikel in Zeitschrift ART-1996-02

Bibliograph.
Daten
Rothermel, Kurt; Helbig, Tobias: Clock Hierarchies: An Abstraction for Grouping and controlling Media Systems.
In: IEEE Journal on Selected Areas in Communications - Synchronization Issues in Multimedia Communications, 1996. Vol. 14(1).
Universität Stuttgart, Fakultät Informatik.
S. 1-23, englisch.
Stuttgart: Uni-Stuttgart, 1. Januar 1996.
Artikel in Zeitschrift.
CR-Klassif.A (General Literature)
KeywordsDistributed Multimedia System; System Services Interface; Stream Synchronization; Grouping
Kurzfassung

Synchronization plays an important role in multimedia systems at various levels of abstraction. In this paper, we propose a set of powerful abstractions for controlling and synchronizing continuous media streams in distributed environments. The proposed abstractions are based on a very general computation model, which allows media streams to be processed (i.e. produced, consumed or transformed) by arbitrarily structured networks of linked components. Further, compound components can be composed of existing ones to provide higher levels of abstractions. The clock abstraction is provided to control individual media streams, i.e. streams can be started, paused or scaled by issuing the appropriate clock operations. Clock hierarchies are used to hierarchically group related streams, where each clock in the hierarchy identifies and controls a certain (sub)group of streams. Control and synchronization requirements can be expressed in a uniform manner by associating group members with control or sync attributes. An important property of the concept of clock hierarchies is that it can be combined in a natural way with component nesting.

Volltext und
andere Links
PDF (75003 Bytes)
PostScript (218489 Bytes)
Kontakt[rothermel,helbig]informatik.uni-stuttgart.de
Abteilung(en)Universität Stuttgart, Institut für Parallele und Verteilte Höchstleistungsrechner, Verteilte Systeme
Eingabedatum19. Juli 2001
   Publ. Abteilung   Publ. Institut   Publ. Informatik