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A controller LSI for realizing V DD-hopping scheme with off-the-shelf processors and its application to MPEG4 system
- Title
- A controller LSI for realizing V DD-hopping scheme with off-the-shelf processors and its application to MPEG4 system
- Authors
- Kawaguchi H.; Zhang G.; Lee S.; Shin Y.; Sakurai T.
- Ewha Authors
- 이성수
- Issue Date
- 2002
- Journal Title
- IEICE Transactions on Electronics
- ISSN
- 0916-8524
- Citation
- IEICE Transactions on Electronics vol. E85-C, no. 2, pp. 263 - 271
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- An LSI has been fabricated and measured to demonstrate feasibility of V DD-hopping scheme in an embedded system level by executing MPEG4 CODEC. In the V DD-hopping, supply voltage of a processor is dynamically controlled by a hardware-software cooperative mechanism depending on work-load of the processor. When the workload is about a half, the V DD-hopping is shown to reduce power to less than a quarter compared to the conventional fixed-V DD scheme. The power saving is achieved without degrading real-time features of MPEG4 CODEC.
- Appears in Collections:
- 인공지능대학 > 컴퓨터공학과 > Journal papers
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