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In the recent years multimedia technology has emerged as a key technology, mainly because of its ability to represent information in disparate forms as a bit-stream. This enables everything from text to video and sound to be stored, processed, and delivered in digital form. A great part of the current research community effort has emphasized the delivery of the data as an important issue of multimedia...
We study a new design strategy for the implementation of Parallel Media Servers with a predictable behavior. This strategy makes the timing properties and the quality of presentation of a set of media streams predictable. The proposed real-time scheduling approach exploits the performance of parallel environments and seems a promising method that brings the advantages of parallel computation in media...
In order to ensure a more widespread implementation of video-on-demand (VoD) services, it is essential that the design of cost-effective large-scale VoD (LVoD) architectures be able to support hundreds of thousands of concurrent users. The main keys for the designing of such architectures are high streaming capacity, low costs, scalability, fault tolerance, load balance, low complexity and resource...
The paper describes a new language and supporting tools for creation and display of multimedia presentations, specially for the Internet usage. The language implements the message passing paradigm to set up communication between elements of presentations. Model of the language and its flexibility are discussed.
Over the last decade a lot of research and development efforts have gone into designing competitive video coding standards for several kinds of applications. Some video encoders like MPEG-4 and H.26L, exhibit a high computational cost, far from real-time encoding, with medium to high quality video sequences. So, for these kinds of video coding standards, it is very difficult to find software solutions...
This paper presents a novel predication scheme that was applied to a SIMD system-on-chip. This approach was devised by improving and combining the unrestricted predication model and the guarded execution model. It is shown that significant execution autonomy is added to the SIMD processing elements and that the code size is reduced considerably. Finally, the implemented predication scheme is compared...
MorphoSys is a reconfigurable architecture for computation intensive applications. It combines both coarse grain and fine grain reconfiguration techniques to optimize hardware, based on the application domain. M2, the current implementation, is developed as an IP core. It is synthesized based on the TSMC 0.13 micron technology. Experimental results show that for multimedia applications MorphoSys has...
Current media ISA extensions such as Sun’s VIS consist of SIMD-like instructions that operate on short vector registers. In order to exploit more parallelism in a superscalar processor provided with such instructions, the issue width has to be increased. In the Complex Streamed Instruction (CSI) set exploiting more parallelism does not involve issuing more instructions. In this paper we study how...
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