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Satoshi Akui - IEEE Xplore Author Profile

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The introduction of high-resolution CMOS image sensors [1] has encouraged the development of various applications to handle high frame rates, high resolution, and multiple images processed by software. Complicated image processing algorithms used in recent DSCs and camcorders, which make use of adaptive image processing to deal with the characteristics of scenes and objects, require extensive comp...Show More
High-performance and low-power microprocessors are key to PDA applications. A dynamic voltage and frequency management (DVFM) scheme with leakage power compensation effect is introduced in a microprocessor with 128-bit wideband 64-Mb embedded DRAM. The DVFM scheme autonomously controls clock frequency from 8 to 123 MHz in steps of 0.5 MHz and also adaptively controls supply voltage from 0.9 to 1.6...Show More
A dynamic voltage and frequency management scheme that autonomously controls the clock frequency (8 to 123 MHz at 0.5 MHz step) and adaptively controls the voltage (0.9 to 1.6 V at 5 mV step) with a leakage power compensation effect is developed for a low-power embedded microprocessor. It achieves 82% power reduction in personal information manager (PIM) application.Show More