Background and Related Work
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This monograph envisions adaptive low-power multimedia systems covering both the application and processor perspectives. Besides low power consumption, a special focus is on the support for adaptivity which is inevitable when considering the rapid evolution of the multimedia/video standards and high unpredictability due to user interactions, input data, and inclusion of adaptive algorithms in advanced standards. In order to support adaptivity dynamically reconfigurable processors are considered in this monograph. This chapter provides basics and terminology used in video coding and an overview of the H.264 video encoder which is one of the latest video coding standards. Afterwards, a general background of the reconfigurable processors and their low-power infrastructure is discussed in Sect. 2.3 followed by the prominent related work in dynamically reconfigurable processors and low-power approaches for reconfigurable computing. Especially, the RISPP processor [Bau09] is presented in detail as it is used for detailed benchmarking of the processor-level contribution of this monograph (i.e., adaptive low-power processor architecture).