21 Processor Architectures For
نویسنده
چکیده
In this chapter, we present contemporary VLSI processor architectures that support multimedia applications. We classified these processors into two groups: dedicated multimedia processors, which perform dedicated multimedia functions, such as MPEG encoding or decoding, and general-purpose processors that provide support for multimedia. Dedicated multimedia processors use either function-specific architectures with limited flexibility but higher speed and efficiency, or programmable architectures with increased flexibility. Both architectures are exploring parallelism inherent in video and image applications by applying single-instruction, multiple-data (SIMD) or/and very-large-instruction-word (VLIW) concepts. Advanced general-purpose processors provide the support for multimedia by incorporating new multimedia instructions and executing them in parallel by using the SIMD coprocessor approach. A survey of these processor architectures and their performance is presented in this chapter.
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