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IEEE International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS)

作者： Feng-Ming Yeh Liang-Ying Huang Chun-Yu Chiang Rong-Seng Chang Chuen-Lin Tien Ya-Hui Hsieh der-Chin Chen Department of Optometry Yuanpei University of Medical Technology Hsinchu Taiwan Department of Optics and Photonics National Central University Taoyuan Taiwan Ph.D. Program of Electrical and Communications Engineering Feng Chia University Taichung Taiwan Department of Electrical Engineering Feng Chia University Taichung Taiwan Department of Healthcare Information and Management Ming Chuan University Taoyuan Taiwan

In this study, a micro-led display, an eye chart player software, and image capture and processing module were used to construct a color refractive error exam for subject with speech disorder. This method can be used to test subjects with refractive errors, eye's color vision and other pathological problems. The micro-led display uses an eye chart player program to display the capital letters E and the other fonts, and the gaps of the E letters can be tumbled in any direction. When subjects with speech disorder were examined for vision, the E chart was displayed sequentially from big letters to small letters, and the image capture and processing module was synchronized with the eye chart player program. The subjects only need to point out the direction of the gap with gestures, and the image capture and processing module can simultaneously capture the gestures of the subjects to judge visual test status. In this study, twenty subjects were tested and all obtained the correct VA value and wore excellent eye glasses. The characteristic of this innovative method is that the subjects with a speech disorder can use simple hand gestures to complete the visual exam through the image capture and processing module during the inspection.

关键词： Visualization Pathology Image color analysis Glass Image capture Signal processing Inspection

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Blue micro-LEd with a red/green blended polymer film for 3.5-Gbps visible light communication employing adaptive SNR-Flattening Algorithm

Next Nanotechnology

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Next Nanotechnology 2024年 5卷

作者： Ho, Pin-Wei Cheng, Chih-Hsien Liao, Yu-Sheng Chi, Yu-Chieh Sadhu, Annada Sankar Matsumoto, Atsushi Akahane, Kouichi Chen, Li-Yin Kuo, Hao-Chung Lin, Gong-Ru Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering National Taiwan University Taipei 106319 Taiwan National Institute of Information and Communications Technology Koganei Tokyo 184-8795 Japan SANWAY OPTOELECTRONICS TECH. CORP New Taipei City 235601 Taiwan Department of Photonics Institute of Electro-Optical Engineering College of Electrical and Computer Engineering National Yang Ming Chiao Tung University Hsinchu 30010 Taiwan International Ph.D. Program in Photonics (UST) College of Electrical and Computer Engineering National Yang Ming Chiao Tung University Hsinchu 30010 Taiwan Semiconductor Research Center Hon Hai Research Institute Taipei 11492 Taiwan NTU-Tektronix Joint Research Center Tektronix Inc. and National Taiwan University Taipei 106319 Taiwan

By the semipolar blue single GaN μ-LEd and blended Ir(piq)2(acac) + CC-MP5 polymer thin film color converter, a high-speed white-light μ-LEd-based system is built up for the applications of short-distance VLC. The characteristics and properties of both devices are analyzed to understand the requirements for transmission and illumination. By selecting the growing orient, the influence of QCSE is reduced in this GaN μ-LEd. Meanwhile, possessing the low reflection characteristic, it is beneficial for signal modulation. For the polymer thin film color converter with a lifetime of 7.8 ns, low surface reflection and high conversion efficiency are thought of good properties. Color-converted cool white light has a CCT of around 7000 K and high color accuracy with a CRI of about 90. The APd-combined frequency responses of the GaN μ-LEd and GaN μ-LEd + polymer are measured as 750 MHz and 600 MHz, respectively. After the optimization by utilizing the adaptive SNR-flattening pre-emphasis algorithm, the transmission performance of the white-light μ-LEd is significantly promoted. For NRZ-OOK encoding, a 1.4 Gbps 0.15-m free-space transmission is achieved with a rising time of 656.33 ps, a falling time of 493.32 ps, and a Q-factor of 4.75. Besides, in more advanced data formats, the performance of this white-light μ-LEd can be better highlighted. For the same 0.15-m free-space VLC, a high-speed 3 Gbps broadband 8-QAM-OFdM transmission is fulfilled with an EVM of 23.9%, an average SNR of 12.5, and a BER below 3.8 × 10^-3;while to the best of our knowledge, a record 3.5 Gbps BL-dMT transmission is implemented as well. This white-light μ-LEd can also be integrated into large-scale arrays for multi-functional VLC applications. © 2024 The Authors

关键词： Adaptive SNR-Flattening algorithm Blue micro-LEd Red/Green blended polymer Visible light communication

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Root cause analysis and defect ground effect of EMI problem for power electronics

Root cause analysis and defect ground effect of EMI problem ...

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2019 Joint International Symposium on Electromagnetic Compatibility, Sapporo and Asia-Pacific International Symposium on Electromagnetic Compatibility, EMC Sapporo/APEMC 2019

作者： Lin, Han-Nien Tseng, Wei-ding Wu, Cheng-Hau Yeh, Ting-Hao Ho, Tzu-Hao Feng Chia University Department of Communications Engineering Taichung City Taiwan Ansys Taiwan Taiwan Feng Chia University Ph.D. Program of Electrical and Communications Engineering Taichung City Taiwan

ISBN: (纸本)9784885523229

The dC-dC converter is a crucial component of electronic modules or systems, and thus making electromagnetic interference issue essential. Even though power IC manufacturer often provides useful PCB design guidelines, but power electronic engineer sometimes ignores the design rules because of his own application concerned or cost issue. This usually leads the converter to a poor EMI performance in the first time, thus requiring additional engineering resources, greater time to market, as well as higher EMI filter costs to comply with related EMI regulations. In this paper, we'll analyze the root cause of EMI problem on a dC-dC converter module built with single layer-double side PCB, and point out some factors of PCB ground design that will affect the EMI performance. Since there is no complete pair for power-ground plane, the plane resonance issue will not be discussed in this paper. © 2019 The Institute of Electronics, Information and Communication Engineer.

关键词： Power electronics

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A stable video stitching technique for minimally invasive surgery 19

A stable video stitching technique for minimally invasive su...

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9th International Conference on Biomedical engineering and Technology, ICBET 2019

作者： Kim, dinh Thai Cheng, Ching-Hwa Liu, don-Gey Ph. D. Program of Electrical and Communications Engineering Feng Chia University Taichung Taiwan Department of Electronic Engineering Feng Chia University Taichung Taiwan

ISBN: (纸本)9781450361309

One of the major challenges in Minimally Invasive Surgery (MIS) is the limited field of vision (FOV) of the endoscope. We have designed an MIS Panoramic Endoscope (MISPE) to provide doctors with a broad field of view. However, there was an issue in its stability for video stitching. In this paper, we propose a novel algorithm to improve the MISPE’s performance. Experimental results show that our revised MISPE can operate stably and enhance the camera’s FOV up to 70%. © 2019 Association for Computing Machinery.

关键词： Endoscopy

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design and Fabrication of Micro-LEd display with Sapphire Micro-Reflector Array

Design and Fabrication of Micro-LED Display with Sapphire Mi...

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IEEE International Conference on Micro Electro Mechanical Systems

作者： Chengshiun Liou Mingyu Hsieh Fuchi Shih Yuanyuan Huang Zihsong Hu Chingfu Tsou Weileun Fang Ph. D. Program of Electrical and Communications Engineering Feng Chia University Taiwan Feng Chia University Taiwan National Tsing Hua University Taiwan

ISBN: (数字)9781728135816

ISBN: (纸本)9781728135823

This paper proposes a new design of a Micro-LEd display with a sapphire micro-reflector array. This novel technology uses an ICP etching process to fabricate a V-shaped trench in sapphire substrate. With the microloading effect, a specific sapphire micro-reflector is created under each Micro-LEd, which can be used to converge the light rays and therefore, improve the display quality of a Micro-LEd. In this study, the feasibility of a sapphire and GaN etching process and the optical performance of a Micro-LEd have been evaluated and measured by experimentation. It was confirmed that the proposed Micro-LEd display has an improved lighting performance, while increasing 55% in maximum brightness.

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Adaptive prediction-based control for an ecological cruise control system on curved and hilly roads

Adaptive prediction-based control for an ecological cruise c...

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作者： Lin, Yu-Chen Nguyen, Ha Ly Thi Balas, Valentina Emilia Lin, Tsung-Chih Kuo, I-Chun Department of Automatic Control Engineering Feng Chia University Taichung Taiwan Ph.D. Program in Electrical and Communications Engineering Feng Chia University Taichung Taiwan Automatics and Applied Software Department Aurel Vlaicu University of Arad ROU Romania Department of Electronic Engineering Feng-Chia University Taichung Taiwan Electronic Control Technology Group RD Division Automotive Research Testing Center Changhua Taiwan

This paper presents an adaptive prediction-based control scheme for developing an ecological cruise control (ECC) system when simultaneous running on the roads with the continuous curves and up-down slopes, which aims to guarantee the driving safety, riding comfort of a vehicle and enhance its fuel efficiency as well. This study is mainly divided into two parts: vehicle longitudinal speed control and vehicle lateral stability control. Firstly, based on GPS data, topographical information, and a fuel consumption model, the prediction based on approximate dynamic programming (AdP) using adaptive fuzzy neural networks (FNNs) is employed to calculate appropriate control signal required for ecological driving. Secondly, to maintain the vehicle stable on the curved road, the vehicle lateral stability control is presented utilizing sliding mode control approach. The effectiveness of the proposed ECC system, in view of stability, improved riding comfort and fuel efficiency, has been validated on the CarSim environment. © 2020 - IOS Press and the authors. All rights reserved.

关键词： Adaptive control systems

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Opportunistic screening with multiphase contrast-enhanced dual-layer spectral CT for osteoblastic lesions in prostate cancer compared with bone scintigraphy

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Scientific Reports 2024年第1期14卷 1-11页

作者： Liu, Ming-Cheng Ho, Chi-Chang Lin, Yen-Ting Chai, Jyh-Wen Hung, Siu-Wan Wu, Chen-Hao Li, Jian-Ri Liu, Yi-Jui Department of Radiology Taichung Veterans General Hospital Taichung Taiwan Ph.D. Program of Electrical and Communications Engineering Feng Chia University Taichung Taiwan Institute of Clinical Medicine National Yang-Ming University Taipei Taiwan Division of Urology Department of Surgery Taichung Veterans General Hospital Taichung Taiwan Department of Post-Baccalaureate Medicine College of Medicine National Chung Hsing University Taichung Taiwan Institute of Medicine Chung Shan Medical University Taichung Taiwan Department of Medicine and Nursing Hungkuang University Taichung Taiwan Department of Automatic Control Engineering Feng Chia University No. 100 Wenhwa Rd. Xitun Dist. Taichung 407102 Taiwan

Our study aimed to compare bone scintigraphy and dual-layer detector spectral CT (dLCT) with multiphase contrast enhancement for the diagnosis of osteoblastic bone lesions in patients with prostate cancer. The patients with prostate cancer and osteoblastic bone lesions detected on dLCT were divided into positive bone scintigraphy group (pBS) and negative bone scintigraphy group (nBS) based on bone scintigraphy. A total of 106 patients (57 nBS and 49 pBS) was included. The parameters of each lesion were measured from dLCT including Hounsfield unit (HU), 40–140 keV monochromatic HU, effective nuclear numbers (Z_eff), and Iodine no water (InW) value in non-contrast phase (N), the arterial phase (A), and venous phase (V). The slope of the spectral curve at 40 and 100 keV, the different values of the parameters between A and N phase (A-N), V and N phase (V-N), and hybrid prediction model with multiparameters were used to differentiate pBS from nBS. Receiver operating characteristic analysis was performed to compare the area under the curve (AUC) for differentiating the pBS group from the nBS group. The value of conventional HU values, slope, and InW in A-N and V-N, and hybrid model were significantly higher in the pBS group than in the nBS group. The hybrid model of all significant parameters had the highest AUC of 0.988, with 95.5% sensitivity and 94.6% specificity. dLCT with arterial contrast enhancement phase has the potential to serve as an opportunistic screening tool for detecting positive osteoblastic bone lesions, corresponding to those identified in bone scintigraphy. © The Author(s) 2024.

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Establishment of ESd generator model for transient susceptibility analysis from chip to system level

Establishment of ESD generator model for transient susceptib...

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2019 Joint International Symposium on Electromagnetic Compatibility, Sapporo and Asia-Pacific International Symposium on Electromagnetic Compatibility, EMC Sapporo/APEMC 2019

作者： Lin, Han-Nien Ko, Bo-Ning Lin, Jeffrey Yen-Ting Ho, Tzu-Hao Lin, Min-Shang Su, Chia-Hung Feng Chia University Department of Communications Engineering Taichung City Taiwan Feng Chia University Ph.D. Program of Electrical and Communications Engineering Taichung City Taiwan Ministry of Economic Affairs Taipei City Taiwan Electronics Testing Center Taiwan

ISBN: (纸本)9784885523229

There is a growing awareness in the electronics manufacturer that system level ESd robustness is an important requirement for reliable products. System level ESd testing is today applied to a wider range of products than ever before. designing ESd robust systems can be very challenging, especially for systems which integrate advanced technology integrated circuit (IC) components. While IC level ESd design and the necessary protection levels are well understood with reliability test from CdM or HBM model, system ESd protection strategy and design efficiency have only been dealt with in an ad hoc manner. We wish to explore realistic system or chip ESd protection requirements and strategies for normal operating IC chip or system, and therefore we have to establish the realistic ESd generator model to be incorporated with chip or system under investigation. Many of the most severe system level ESd design problems can be then traced to the affected location of system or chip with analyzing the residual ESd stress after injection and propagation. With this help, we can then adopt a consolidated approach to system level ESd design, and validate future success in building ESd robust systems through simulation in advance. © 2019 The Institute of Electronics, Information and Communication Engineer.

关键词： Integrated circuits

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Analysis of PCB return path configuration effect on Transient ESd suppression

Analysis of PCB return path configuration effect on Transien...

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2019 Joint International Symposium on Electromagnetic Compatibility, Sapporo and Asia-Pacific International Symposium on Electromagnetic Compatibility, EMC Sapporo/APEMC 2019

作者： Lin, Han-Nien Huang, Jia-Yu Huang, Yu-Chun Lin, Min-Shang Ho, Tzu-Hao Su, Chia-Hung Feng Chia University Ph.D. Program of Electrical and Communications Engineering Taichung City Taiwan Feng Chia University Department of Communications Engineering Taichung City Taiwan Ministry of Economic Affairs Bureau of Standards Taipei City Taiwan Electronics Testing Center Taiwan

ISBN: (纸本)9784885523229

Since system level ESd testing is today applied to a wider range of products than ever before. designing ESd robust systems can be very challenging, especially for systems which integrate advanced technology integrated circuit (IC) components. Solving ESd problems can lead to other complications on layout of chip and board level with verification. Since the ESd stress current makes its own path from injection spot to pins of IC under test or adjacent metal parts, such as trace or ground, we need to investigate those possible current paths forming a propagating chain on PCB of mounted component devices. A key finding of ESd design for sensitive IC mounted PCB is the analysis of the stress reaching IC / module/system level circuit so that best practice ESd protection and controls can be achieved. In this paper, we investigate the effect of different return paths on various ground plane configurations on board level ESd problem with the utilization of ESd generator model previously validated. © 2019 The Institute of Electronics, Information and Communication Engineer.

关键词： Integrated circuits

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Ultrafast circuit protection for unmanned systems

Ultrafast circuit protection for unmanned systems

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2019 International Conference on communications, Information System, and Computer engineering, CISCE 2019

作者： Kao, Chih-Hong Huang, Sy-Ruen He, Bo-Rong Lin, Hsiung-Cheng School of Computer Science Minnan Normal University Lab of Granular Computing ZhangZhou Fujjan China Department of Electrical Engineering Feng Chia University Taichung Taiwan Ph.D. Program of Electrical and Communications Engineering Feng Chia University Taichung Taiwan Department of Electrical Engineering Chin-Yi University of Technology Taichung Taiwan

ISBN: (纸本)9781728136813

With increasing dependence on precision electronic equipment, self-protection is becoming essential. The protection circuits commonly used before were fuses and circuit breakers which, however, they are not enough for the current need of high-speed protection circuits and automated engineering logic. In this paper, we develop a new ultrahigh-speed protection circuit, which is over exceeded 20 times faster than traditional circuits and has the ability to self-recover when any failure occurs. With the new circuit developed, it is not necessary to do manual restart and will meet the future needs of protection for electronic precision equipment. This design provides greater convenience and reliability for the unmanned equipment for the future. © 2019 IEEE.

关键词： Timing circuits

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