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If a cleaning robot can understand auditory scene, it can do a variety of roles including that of surveillance for home/office security. However, ego noise generated by the embedded motors can pose a serious problem against accurately performing auditory scene analysis. We propose an appropriate feature set using log-scale filter bank that effectively performs acoustic event recognition robust against...
Understanding player's cognitive state and emotional response is necessary to make serious games more challenging and enhance the quality of human-machine interaction and gaming experience. Previous emotion recognition using brain computer interfaces (BCIs) is either relying a large number of wet electrodes or combining both brain signals with other peripheral physiological signals. In this paper,...
We have estimated the dosimetry for a wireless power transfer system using resonance. Electric and magnetic fields produced by the system have been calculated by using an electromagnetic solver. We computed induced electric fields and specific absorption rates in a Japanese adult male model (TARO) by the scattered-field finite-difference time-domain method taking into account both incident electric...
In recent years, there has been increased interest in characterizing and extracting 3D information from video sequences for object tracking and identification. In this paper, we propose a single view-based framework for robust estimation of height and position. In this work, 2D features of a target object is back-projected into the 3D scene space where its coordinate system is given by a rectangular...
This paper presents various voxel human models developed for electromagnetic dosimetry of new wireless technologies. In addition to the voxel human models, we also present numerical simulation results of the new wireless technologies, e.g., wireless power transmission system, and measurement of biological tissues and organs of millimeter-wave region and inter-mediate frequency region.
In this study, we have formed form CuInSe2 thin film, using Cu substrate. To form thin film, we deposited on Cu substrate by evaporation and completed the element in 4 steps in total. Notably, our primary focus was on the results of deposition of In on Cu substrate, heat treatment step at low temperature for binary formation by Cu diffusion and at high temperature to convert binary phase to CuInSe...
Wafer level surface acoustic wave (SAW) filter package, 0.8times0.6 mm2, is drilled by laser via process. Via formation for interconnection is based on smaller package manufacture. LT (LiTaO3) which is base material of SAW filter is difficult to drill a small via by RIE (Reactive Ion Etching) because the RIE gets a very small etch rate and has wafer broken issue by thermal heating. So, our previous...
The relative velocity of the vehicle ad hoc network that has high mobility can affect network topology. This can affect the efficiency of those networks, so a suitable mechanism is necessary for effective management of them. This paper analyzes MAC throughputs in according with relative velocity in vehicle ad hoc environment. The vehicle ad hoc network has serious a topological variation because of...
A frequency synthesizer for a 2.4 GHz IEEE 802.15.4/Zigbee compliant transceiver is presented. The VCO has a 15.2% tuning range from 4580-5275 MHz with 135 MHz/V sensitivity. IQ generation for transceiver applications is performed through frequency division at the output of VCO. Frequency dividers employ hybrid circuit styles including CML and TSPC logic. The synthesizer is implemented in TSMC 0.18...
The mechanism of a wire ball/pad open failure at a gold wire and bonding pad interface of a multi-stack package (MSP) under high temperature storage (HTS) condition, 150 ?C, is studied. Failure analysis using FE-SEM (Field Emission) and FIB-SEM (Focused Ion Beam) was conducted. The analysis revealed that the main factors that contribute to a ball/pad failure were the tensile (pull-off) stress imposed...
The crosstalk of two bent transmission lines of arbitrary directions have been analyzed by a circuit concept approach. The results for the circuit concept approach, HFSS and measurements are in very good agreement. The derived equations can be expected to be easily applied them for analyzing crosstalk of a various kind of bent transmission lines in printed circuit board
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