Title :
An LSI for VDD-hopping and MPEG4 system based on the chip
Author :
Kawaguchi, Hitoshi ; Zhang, Gang ; Lee, Seongsoo ; Sakurai, Takayasu
Author_Institution :
Center for Collaborative Res., Tokyo Univ., Japan
Abstract :
An LSI is fabricated and measured to demonstrate the feasibility of the VDD-hopping scheme in a system level. In the scheme, supply voltage, VDD, is dynamically controlled through software depending on workload. The VDD-hopping scheme is shown to reduce the power to less than 1/4 compared with the conventional fixed-VDD scheme. The power saving is achieved without degrading the real-time feature of an MPEG4 system
Keywords :
CMOS digital integrated circuits; digital signal processing chips; large scale integration; multimedia computing; real-time systems; CMOS; LSI; MPEG4 system; VDD-hopping; multimedia system; real-time feature; supply voltage; Application software; Delay estimation; Feedback loop; Large scale integration; MOSFET circuits; MPEG 4 Standard; Power system modeling; Testing; Threshold voltage; Time factors;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.922388
