摘要 : Mobile multimedia is a rising trend. A mobile device is light, thin, and small, but it is expected to be very powerful to support increasing multimedia functions, such as photos capture and display, real-time video communications,... 展开 Mobile multimedia is a rising trend. A mobile device is light, thin, and small, but it is expected to be very powerful to support increasing multimedia functions, such as photos capture and display, real-time video communications, and movies and TV watching. To support these high computing and high bandwidth operations on a mobile device with limited energy, the power-aware design concept is expected to be introduced for further power optimization. A power-aware system is not only a conventional low power design, but also a design that can adaptively adjust its power consumption to specific conditions, such as different battery status, signal content, user preferences, and operating environments. In this article, we focus on the introduction of power-aware concepts and considerations to the architecture design of a video coder, followed by discussions of exciting power aware motion estimation and discrete cosine transform designs. Although these modules are dedicated architectures optimized for real-time processing, they can provide power scalability by embedding some reconfigurable points inside 收起