Izumi Fukasaku

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Asynchronous design has a potential of solving many difficulties, such as clock skew and power consumption, which synchronous counterpart suffers with current and future VLSI technologies. This paper proposes a new delay model, the scalable-delay-insensitive (SDI) model, for dependable and high-performance asynchronous VLSI system design. Then, based on the(More)
A wearable optical topography system was developed that is based on near-infrared spectroscopy (NIRS) for observing brain activity noninvasively including in regions covered by hair. An avalanche photo diode, high voltage dc-dc converter, and preamplifier were placed in an electrically shielded case to be safely mounted on the head. Rubber teeth and a glass(More)
With the wire-delay problem moving into dominance in VLSI chip design, a fundamental limitation is being revealed in performance and dependability of synchronous systems which require global clock distribution with as little skew as possible. The worst-case delay is influenced not only by design and fabrication process but also by the operating environment,(More)
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