Waddington DG, Coulson G. A distributed multimedia component architecture. In: Proceedings of the First International Workshop on Enterprise Distributed Object Computing, Gold Coast, Australia, October 1997. p. 334--47.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....is restricted to a high level conceptual description rather than an approach for implementation. Other frameworks focus on specific problems in distributed multimedia environments and propose sophisticated extensions for QoS management and adaption, e.g. the Multimedia Component Architecture (MCA) [6] or CINEMA [7] The Toolkit for Open Adaptive Streaming Technology (TOAST) examines the use of reflection and open programming in distributed multimedia [8] The approach described in [9] extends the standard CORBA Event Service to support multimedia and includes data types for multimedia data ....

Waddington, D., Coulson, G.: A Distributed Multimedia Component Architecture. In: IEEE International Workshop on Enterprise Distributed Object Computing. (1997)

..... Real time synchronization. Classical environments for distributed computing often do not fulfill the requirements of distributed multimedia applications [2] Their initial focus lies in remote request reply object interactions and their capabilities in continuous media modeling are limited [10]. Also the Common Object Request Broker Architecture (CORBA) supported by the Object Management Group (OMG) 5] does not naturally support the transmission of real time streaming data. The CORBA layer introduces a large overhead through its marshalling operations and through the retransmission ....

D. G.Waddington and G. Coulson. "A Distributed Multimedia Component Architecture." In Proceedings of the 1st International Workshop on Enterprise Distributed Object Computing, Gold Coast, Australia, pages 334--347, October 1997.

.... DPE, it should be noted that besides supporting modelling aspects, the control and management software of new telecommunications infrastructures needs also to support a range of QoS characteristics, the synchronisation of continuous media, and the careful management of underlying resources [4][25]. These aspects are outside the scope of this paper. 3. Enhancing DCOM for the Support of Continuous Media. DCOM is the distributed extension to COM (Component Object Model) that builds an Object Remote Procedure Call (ORPC) layer on top of DCE RPC to support remote objects. In general, DCOM ....

Waddington, D., Coulson, G., "A Distributed Multimedia Component Architecture", Proceedings of the 1 st IEEE International Workshop on Enterprise Distributed Object Computing (EDOC '97), Queensland, Australia, 1997.

.... DPE, it should be noted that besides supporting modelling aspects, the control and management software of new telecommunications infrastructures needs also to support a range of QoS characteristics, the synchronisation of continuous media, and the management of underlying resources [4] 16][23]. These aspects are not within the scope of this paper. 3 Supporting Continuous Media in DCOM DCOM is the distributed extension to COM (Component Object Model) that builds an Object Remote Procedure Call (ORPC) layer on top of DCE RPC to support remote objects. In general, DCOM provides all the ....

Waddington, D., Coulson, G.: A Distributed Multimedia Component Architecture. Proceedings of EDOC '97 (1997)

....dynamic configuration mechanisms allow new data handling components to be added while other components are maintained in a running state. However the time constraints on a reconfiguration are not well specified. The Multimedia Component Architecture (MCA) proposed by Waddington and Coulson [11] uses Microsoft s DCOM (Distributed Component Object Model) and forms part of the Distributed Resource Management Architecture (DRMA) 12] MCA includes support for QoS monitoring and dynamic adaptation, by means of a hierarchy of binding components which are responsible for QoS notifications and ....

D. G. Waddington and G. Coulson. A Distributed Multimedia Component Architecture. In Proceedings of the First International Workshop on Enterprise Distributed Object Computing, Surfers Paradise, Gold Coast, Australia, October 1997. IEEE. URL: ftp://ftp.comp.lancs.ac.uk/pub/mpg/- MPG-97-11.ps.Z.

....relatively intelligent workstations in conjunction with a relatively inefficient multimedia transport protocol. The choice of prototype implementation scenario therefore does not do the architecture justice. 4. 3 Multimedia Component Architecture (MCA) The Multimedia Component Architecture (MCA) Waddington, 97b] is being developed as the middleware support for a fuller Distributed Resource Management Architecture (DRMA) which is also on going at Lancaster University [Waddington, 97a] The complete system is aimed at the development and deployment of distributed multimedia applications over multi service ....

D.G.Waddington and G.Coulson, "A Distributed Multimedia Component Architecture", Proceedings of the 1 st International Workshop on Enterprise Distributed Object Computing, Gold Coast, Australia, October 1997.

....an increase in all of the end to end resources is required. 2.1 Hierarchical QoS Management From an engineering perspective, QoS management in a distributed system is a substantially complex task. An approach which has been proposed in the Distributed Resource Management Architecture (DRMA) Waddington, 97b] is hierarchical QoS management. This technique breaks down the task of managing end toend resources by dividing the problem into a set of finer grained point to point requirements which are structured as hierarchical bindings (see figure 3) By doing so, mapping and monitoring processes become ....

....define the point to point QoS constraints. The role of the binding object is to maintain the desired QoS, as specified by its interfaces, and in doing so it may, if required, employ monitoring and adaptation mechanisms. More detail on distributed binding objects is given in [Waddington, 97a] Waddington, 97b] binding object binding object monitoring notification parent binding object binding object binding object parent binding object change of QoS requirements adaptation control invocation Figure 6. Explicit Hierarchical Adaptation At the lowest level of the binding hierarchy, atomic ....

D.G.Waddington and G.Coulson, "A Distributed Multimedia Component Architecture", Proceedings of the 1 st International Workshop on Enterprise Distributed Object Computing, Gold Coast, Australia, October 1997.

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Waddington DG, Coulson G. A distributed multimedia component architecture. In: Proceedings of the First International Workshop on Enterprise Distributed Object Computing, Gold Coast, Australia, October 1997. p. 334--47.

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Waddington DG, Coulson G. A distributed multimedia component architecture. In: Proceedings of the First International Workshop on Enterprise Distributed Object Computing, Gold Coast, Australia, October 1997. p. 334--47.

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