Shinya Abe

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Influence of manufacturing variability on circuit performance has been increasing because of finer manufacturing process and lowered supply voltage. In this paper, we focus on mesh-style clock distribution which is believed to be effective for reducing clock skew, and we evaluate clock skew considering manufacturing and design variabil-ities. Considering(More)
SUMMARY Clock driver suffers from delay variation due to manufacturing and environmental variabilities as well as combinational cells. The delay variation causes clock skew and jitter, and varies both setup and hold timing margins. This paper presents a timing verification method that takes into consideration delay variation inside a clock network due to(More)
This paper presents a self-compensation scheme of manufacturing variability for clock skew reduction. In the proposed scheme, a CDN with embedded variability sensors tunes variable clock drivers for canceling the clock skew induced by manufacturing variability. We apply the proposed scheme for a mesh-style CDN in a 65nm technology and evaluate the deskewing(More)
This paper proposes a vector quantization (VQ) method based on composite permutation coding for transform audio coding. VQ is widely used for audio data compression. It requires mean square error computation or a similar metric for finding the nearest neighbor in the codebook, which generally incurs a lot of operations. To reduce such operations, we focus(More)
We present a method for simulation and visualization of a liquid splash motion. The proposed system is composed of a computational fluid dynamics and a polygon based renderer using multi texturing graphi-cal acceleration. The system well supports the Navier-Stokes solver with adaptive time step and viscosity. The final liquid surface is obtained from the(More)
Greater size of the gluteus maximus muscle in humans compared to non-human primates has been considered an indication of its function in bipedal posture and gait, especially running capabilities. Our aim was to find out how the size of the gluteus maximus muscle varies according to sports while controlling for variation in muscle strength and body weight.(More)
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