google.com, pub-8786015629279405, DIRECT, f08c47fec0942fa0 Architecture for Multimedia Systems

Architecture for Multimedia Systems

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The architecture of multimedia system may be described as a four-level hierarchy. In line with concepts developed in conventional layered systems such as the OSI and Internet each layer performs a specific function and supports the function performed in the layer above. The four-layers (lowest (bottom) layer first) of the architecture, known as the RT architecture (Real-time information handling), are:

Network Subsystem (Layer 1)

-- This layer takes care of the functionalities up layer 3 in the OSI model .Network specific functions depend on the technology used in this layer. Essentially this level provides a possible connection through a network with a specified bandwidth and error probability as supported by the underlying technology.

End-to-End QoS Control (Layer 2)

-- This layer maintains the connection between the source and destination and can be conceptually viewed as a single connection -- even though there may be physically many more. Each connection is managed to ensure that a given Quality of Service (Qos) is maintained.

Media Management (layer 3)

- This layer provides generic services to applications ihn so far as media management is concerned. A primary functions is synchronisation across the media.

Application (Layer 4)

-- The direct interface with the user. The application wil also interface with the operating system, if required -- for example calls to stroage media or specific library functions (subroutines).





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