H.264 & AVS Dualstandard Decoder Bus Schedule Method Analyzing

Nowadays, world video market has entered into the transition period form analogy equipment to digital equipment. Meanwhile, there are many new video standards in the world. H.264, as one of the newest standards, has been widely used in world. AVS, as Chinese new video standard has large domestic market. But these two standards are not compatible. So to study the dual-standard decoder is meaningful. The bus burden of video decoding system is very heavy, because of real-time demand and huge data transition. So a fast and effective way to evaluate the bus schedule strategy is needed.In this paper, we study the AVS and H.264 video standard and a method based on ESL platform to help design multi-standard decoder architecture and analyze bus schedule strategy. Follow aspects are discussed in this thesis.Using ESL platform to help deciding the SW/HW partition In SOC design, how to decide SW/HW partition is a difficult and crucial problem. As in the beginning of design, we are lack of profiling data. So we have to decide the SW/HW partition mainly depend on experience. But we do not know whether this partition is proper until we finish the whole implementation. Once we find the partition is not right then, it is difficult to modify. In this paper, we used the ESL platform to gather profiling data from an original system to provide partition basis.Then use the powerful simulation function to evaluate the partition plan, we can know the approximate performance of the whole system before the hardware implementation. Therefore, we can do some modifies and adjustments early to guarantee the feasibility and efficiency of this partition.Using Network Calculus to build the bus arbiter model Math tools have been wildly used in engineering field to abstract different problems. Compared to other simulation method, math model has the advantage of high abstraction, wide application, fast simulating and so on. In this paper, we use Network Calculus math tool to build the bus arbiter model, which is very helpful to the bus schedule strategy optimization.Using ESL and Network Calculus to analyze the bus schedule strategyBuild a math model just finish the abstraction of the object. You have to get the actual input data to analyze the performance. In this paper, we use the powerful data gathering function to gain the request flow in decoding process, and use it as the model input to get the bus schedule strategy analyzing report which is a main reference of the bus optimization.