By Jörg Wilberg
Codesign for Real-Time Video Applications describes a latest layout method for embedded platforms. It combines the layout of undefined, software program, and algorithms. characteristically, those layout domain names are taken care of individually to minimize the layout complexity. complicated layout instruments help a codesign of the several domain names which opens a chance for exploiting synergetic results.
The layout strategy is illustrated by way of the layout of a video compression approach. it's built-in into the video card of a laptop. A VLIW processor structure is used because the foundation of the compression procedure and renowned video compression algorithms (MPEG, JPEG, H.261) are analyzed. an entire top-down layout stream is gifted and the layout instruments for every of the layout steps are defined.
The instruments are built-in into an HTML-based layout framework. The ensuing layout facts may be at once built-in into the WWW. this can be a the most important point for aiding allotted layout teams. The layout information should be without delay documented an move referencing in a virtually arbitrary method is supported. this offers a platform for info sharing one of the assorted layout domain names.
Codesign for Real-Time Video Applications makes a speciality of the multi-disciplinary points of embedded approach layout. It combines layout automation and complicated processor layout with a major software area. A quantitative layout strategy is emphasised which focuses the layout time at the most vital elements. therefore allowing a quick and price effective layout method.
This ebook could be of curiosity to researchers, designers and bosses operating in embedded procedure design.
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Additional resources for Codesign for Real-Time Video Applications
These relaxed processors exclude certain constraints on the hardware. For example, the interconnection network is excluded during the design exploration. '1sumed. The register file size might be unrestricted, etc. Gradually, these relaxations are removed, as more and more parts of the processor structure are defined by the design process. The unlimited number of units will be replaced by a specific unit constellation, the unlimited register file size will be set to a reasonable value, etc. This will typically reduce the performance.
The problem can be solved if the video compression is performed by an embedded system. The system is integrated into the PC. It acts on behave of the CPU. The PC is the host system which provides the operating environment for the embedded system. The embedded system performs all the computationally intensive tasks. The local memory of the compression system is used for storing the intermediate results of the video compression. The video compression does not consume processing power or memory bandwidth from the PC.
No implementation details are worked out by the designer. This is the second point where the design tools increase the efficiency of the design process. The cosynthesis is used to translate the abstract specification into the detailed specification. This includes both, the hardware description and the software. The combination of both parts is the foundation for producing the final system. They can form the basis for developing the next generation DESIGN METHODOLOGY 37 of the system. This is another advantage of designing on a more abstract level.