Power-aware multimedia: Concepts and design perspectives
Journal
IEEE Circuits and Systems Magazine
Journal Volume
7
Journal Issue
2
Pages
26-34
Date Issued
2007
Author(s)
Abstract
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 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 exiting 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. © 2007 IEEE.
SDGs
Other Subjects
Multimedia functions; Power aware design concept; Power optimization; User preferences; Electric power utilization; Image communication systems; Mobile devices; Motion estimation; Optimization; Real time systems; Video signal processing; Multimedia systems
Type
journal article