Title :
μITRON-LP: power-conscious real-time OS based on cooperative voltage scaling for multimedia applications
Author :
Kawaguchi, Hiroshi ; Shin, Youngsoo ; Sakurai, Takayasu
Author_Institution :
Inst. of Ind. Sci., Univ. of Tokyo, Japan
Abstract :
This work presents a cooperative dynamic power management method and its implementation. The implementation consists of design of a real-time OS, applications including MPEG-4, and development of a supporting hardware platform with an off-the-shelf processor. We describe several factors that are important in the implementation and discuss its efficiency through experiment. The experimental results with the prototype system shows that 74% power saving is possible in multi-task multimedia environment.
Keywords :
multimedia systems; operating systems (computers); power consumption; real-time systems; video coding; MPEG-4; application slicing; cooperative dynamic power management method; dynamic voltage scaling; embedded system; multitask multimedia environment; power-conscious real-time OS; Application software; Dynamic voltage scaling; Embedded system; Energy management; Hardware; MPEG 4 Standard; Multimedia systems; Power system management; Prototypes; Timing;
Journal_Title :
Multimedia, IEEE Transactions on
DOI :
10.1109/TMM.2004.840592
