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We present a small-area second-order all-digital time-to-digital converter (TDC) with two frequency shift oscillators (FSOs) comprising inverter chains and dynamic flipflops featuring low jitter. The proposed FSOs can maintain their phase states through continuous oscillation, unlike conventional gated ring oscillators (GROs) that are affected by transistor(More)
SUMMARY We present a small-area second-order all-digital time-to-digital converter (TDC) with two frequency shift oscillators (FSOs) comprising inverter chains and dynamic flipflops featuring low jitter. The proposed FSOs can maintain their phase states through continuous oscillation , unlike conventional gated ring oscillators (GROs) that are affected by(More)
Whole-body gestures and verbal expressions should be bound according to given tasks and the current situation in intelligent human-robot interaction systems. Moreover, modification of expressions, such as emphasis of motions and change in verbal expressions, plays an important roll for successfully completing tasks according to user reaction. Slight(More)
—This paper presents a two-stage second-order noise shaping time-to-digital converter (TDC) using a one-bit digitally-controlled oscillator (DCO). The clocks output from DCOs are counted and digitized as in a conventional gated ring oscillator (GRO) TDC. A time error is propagated to the second DCO, which provides second-order noise shaping. In the(More)
We tested the hypothesis that an all-out-effort 200-m front-crawl swim trial affects competitive swimmers' shoulder joint position sense. On Day 1, we measured shoulder joint position sense before and after the swim trial, and on Day 2 before and after 2 min of seated rest. On both days, shoulder joint position sense was measured in the seated position(More)
— This report describes an all-digital phase-locked loop (ADPLL) with temperature-compensated settling time reduction. The novelty of this work is autonomous oscillation control word estimation without a look-up table or memory circuits. The proposed ADPLL includes a multi-phase oscillator as a digitally controlled oscillator (DCO). Digital timing error(More)