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2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)最新文献

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Design of a biofeedback device for gait rehabilitation in post-stroke patients 脑卒中后患者步态康复生物反馈装置的设计
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI: 10.1109/MWSCAS.2015.7282097
I-Hung Khoo, P. Marayong, Vennila Krishnan, Michael Balagtas, Omar Rojas
{"title":"Design of a biofeedback device for gait rehabilitation in post-stroke patients","authors":"I-Hung Khoo, P. Marayong, Vennila Krishnan, Michael Balagtas, Omar Rojas","doi":"10.1109/MWSCAS.2015.7282097","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282097","url":null,"abstract":"A novel device, named `Walk-Even', was developed to measure human gait and provide real-time feedback to correct gait asymmetry. Gait asymmetry is usually exhibited in patients with stroke or with certain neurological disorders. Our device can measure the weight pressure distribution that the patient exerts on each foot, in addition to the gait time, swing time, and stance time of each leg while walking. Based on the real time information, a biofeedback is given by means of auditory, and unpleasant electrotactile stimulation to actively correct gait asymmetry. The device consists of custom insoles with embedded force sensors adjustable to fit any shoe size, electrotactile and auditory feedback circuits, microcontroller, and wireless XBee transceivers. We compared the gait measurements from our device with that of a commercial device (MobilityLab) to verify its accuracy. Preliminary testing on post-stroke patients has shown that our device helps to improve their gait symmetry.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121081068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Bitwidth-aware register allocation and binding for clock period minimization 位宽感知寄存器分配和时钟周期最小化绑定
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI: 10.1109/MWSCAS.2015.7282093
Keisuke Inoue, M. Kaneko
{"title":"Bitwidth-aware register allocation and binding for clock period minimization","authors":"Keisuke Inoue, M. Kaneko","doi":"10.1109/MWSCAS.2015.7282093","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282093","url":null,"abstract":"With the growing scale of integration, it is demand for next-generation VLSI design to consider not only the number of resources, but also the bitwidths of them. Removing wasted bits of resources, the area and power costs are optimized rather than conventional design. This paper shows that intentional clock skew (useful clock skew) is effective to improve the performance of bitwidth-aware circuits, and formulates a novel problem of clock skew scheduling to minimize the clock period during register allocation and binding under the total bitwidth constraint. A mixed integer linear programming-based approach is presented to formally draw up the problem. Experimental results show that the proposed approach can reduce 9.4% clock period on average over the conventional design.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124622310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cascoded power stage with automatic dead time generation 级联功率级，自动死区产生
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI: 10.1109/MWSCAS.2015.7282019
I. Filanovsky, Jani K. Jarvenhaara, N. Tchamov
{"title":"Cascoded power stage with automatic dead time generation","authors":"I. Filanovsky, Jani K. Jarvenhaara, N. Tchamov","doi":"10.1109/MWSCAS.2015.7282019","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282019","url":null,"abstract":"The paper presents a cascoded power stage with automatic dead time generation. The circuit is using the inter-transistor node voltages of the cascode configuration as feedback control signals to delay turning ON the power transistors. The circuit is designed as the output stage of a fully-integrated buck converter. The steady-state operation is described. The waveforms simulated on 45-nm CMOS process show that in steady-state operation the short-circuit path and body diode conductions are avoided while effective zero-voltage switching (ZVS) are provided both for ground and power supply line; the calculated dead times are in a good agreement with simulation results.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125082703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An input pole tuned switching equalization scheme for high-speed serial links 一种用于高速串行链路的输入极调谐开关均衡方案
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI: 10.1109/MWSCAS.2015.7282031
Sanquan Song, Jian Xu, Fengxiang Cai, Xin Ma, Zibing Yang, Matthew Becker, Larry Tate, Byungsub Kim, S. Palermo, W. Bowhill
{"title":"An input pole tuned switching equalization scheme for high-speed serial links","authors":"Sanquan Song, Jian Xu, Fengxiang Cai, Xin Ma, Zibing Yang, Matthew Becker, Larry Tate, Byungsub Kim, S. Palermo, W. Bowhill","doi":"10.1109/MWSCAS.2015.7282031","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282031","url":null,"abstract":"A novel receiver equalization scheme for high-speed links is described in this paper. By per-bit switching the channel-receiver connection, the channel induced inter-symbol interference (ISI) is compensated by receiver (RX) input pole induced ISI. The polarity of the recovered binary bit is adjusted in digital domain to match the transmitted data. An input pole based two-way interleaved switching equalization circuit is proposed and simulated. In comparison with the conventional FIR filter, it improves the output eye width by 63%. This paper provides a new way of converting a low-pass system into a peaking system for link designs, suitable for a broader range of applications.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127132041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A new image stream encryption technique 一种新的图像流加密技术
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI: 10.1109/MWSCAS.2015.7282064
F. Hassan, Michael Limbird, V. Ullagaddi, V. Devabhaktuni
{"title":"A new image stream encryption technique","authors":"F. Hassan, Michael Limbird, V. Ullagaddi, V. Devabhaktuni","doi":"10.1109/MWSCAS.2015.7282064","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282064","url":null,"abstract":"This paper introduces a self-synchronous stream cipher with a considerable key space. In the proposed technique, the parity bit plane of a public image is used to encrypt the message. Simulation results showed that the histogram of the ciphered image is uniform representing almost equivalent probability of occurrence of each intensity level. The entropy of the ciphered image is almost equal to the theoretical value of 8, indicating that the information leakage in the proposed encryption process is negligible. The correlation coefficients of the ciphered image prove that there exists almost zero correlation between its pixels. The simulation results also showed that the proposed technique is highly sensitive to the four different parts of its password. Also, the plain-text attack analysis gave NPCR and UACI values that are close to ideal. The proposed technique is computationally simpler than other image encryption techniques in the literature. Finally, a high PSMSE of 83 dB in the decoded image was achieved at a ciphered bit error rate of 10-4. Therefore, the proposed stream cipher can be efficiently used in real time multimedia and wireless applications.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127330479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Microcontroller-based Electrochemical Impedance Spectroscopy for wearable health monitoring systems 基于微控制器的电化学阻抗谱用于可穿戴健康监测系统
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI: 10.1109/MWSCAS.2015.7282197
P. Bhatnagar, F. Beyette
{"title":"Microcontroller-based Electrochemical Impedance Spectroscopy for wearable health monitoring systems","authors":"P. Bhatnagar, F. Beyette","doi":"10.1109/MWSCAS.2015.7282197","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282197","url":null,"abstract":"This paper presents a prototype design of a small form factor microcontroller-based Electrochemical Impedance Spectroscopy (EIS) platform for integration with health monitoring systems. Existing EIS systems are expensive and relatively large in size to be integrated with wearable medical devices. The focus of this paper is to present prototype based on a hardware software co-design to be conceived as a stand-alone module for easy integration with medical devices. Currently, the system is able to analyze samples within the frequency range of 0.02 Hz to 200 kHz or measurements of impedance phase and magnitude. The platform is tested with cell impedance models and is able to calculate the magnitude and phase of the complex impedance with a percentage error of less than 5%.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116661551","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A low-power temperature-compensated relaxation oscillator for built-in test signal generation 用于内置测试信号生成的低功耗温度补偿弛豫振荡器
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI: 10.1109/MWSCAS.2015.7282022
Li Xu, M. Onabajo
{"title":"A low-power temperature-compensated relaxation oscillator for built-in test signal generation","authors":"Li Xu, M. Onabajo","doi":"10.1109/MWSCAS.2015.7282022","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282022","url":null,"abstract":"An on-chip frequency reference for built-in testing and calibration applications is presented. The design combines a proportional-to-absolute-temperature (PTAT) current reference and a relaxation oscillator core. A temperature compensation scheme is realized based on the thermal voltage, for which simulations indicate low sensitivity to process variations. The oscillator was designed and simulated in a 130nm CMOS process with a power supply of 1.2V. It generates a 40KHz output and occupies a layout area of 0.025mm2. A temperature coefficient of 101ppm/°C is achieved over the range from -30°C to 85°C. The simulated phase noise is -90dBc/Hz at 10KHz offset.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121875964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Contactless detection of faulty TSV in 3D IC via capacitive coupling 三维集成电路中电容耦合故障TSV的非接触检测
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI: 10.1109/MWSCAS.2015.7282065
I. Basith, R. Rashidzadeh, E. Abdel-Raheem
{"title":"Contactless detection of faulty TSV in 3D IC via capacitive coupling","authors":"I. Basith, R. Rashidzadeh, E. Abdel-Raheem","doi":"10.1109/MWSCAS.2015.7282065","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282065","url":null,"abstract":"3D IC using Through Silicon Via (TSV) is a promising technology for next generation of integrated circuits. Manufacturing TSV defects like voids and pinholes have to be detected at the test phase to ensure fault free ICs. In this paper a contactless probe utilizing capacitive coupling is presented. The proposed method eliminates the impact of direct probing on TSV and supports the high-density and fine-pitch requirements for TSV probing. 3D full-wave simulations using HFSS and circuit level simulation using ADS show that common TSV defects such as voids and pinholes can be detected successfully.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132566855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Design and implementation of an embedded system for monitoring at-home solitary Alzheimer's patients 一种嵌入式系统的设计与实现，用于监测居家独居阿尔茨海默病患者
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI: 10.1109/MWSCAS.2015.7282201
R. P. O'Brien, S. Katkoori, M. Rowe
{"title":"Design and implementation of an embedded system for monitoring at-home solitary Alzheimer's patients","authors":"R. P. O'Brien, S. Katkoori, M. Rowe","doi":"10.1109/MWSCAS.2015.7282201","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282201","url":null,"abstract":"Alzheimer's disease and other forms of dementia cause cognitive disabilities in the afflicted person. As a result, the person with dementia often requires assistance from a primary caregiver. In this work, a system of embedded devices is presented which tracks a solitary dementia patient in the home in real-time. The system is composed of three main hardware components. Multiple passive and active sensors are strategically placed to monitor the patient. A number of custom battery-powered embedded systems read the sensors and wirelessly transmit the sensor's values. A central computational node collects the wireless transmissions and analyzes the data. Two algorithms were developed that detect the patient's eating activities and location throughout the home from the sensor data. A web-based user interface was designed that allows a primary caregiver to remotely view the patient's status while away from the home.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124957797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Scaled IIR filter based on stochastic computation 基于随机计算的缩放IIR滤波器
2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS) Pub Date : 2015-10-01 DOI: 10.1109/MWSCAS.2015.7282118
N. Onizawa, S. Koshita, T. Hanyu
{"title":"Scaled IIR filter based on stochastic computation","authors":"N. Onizawa, S. Koshita, T. Hanyu","doi":"10.1109/MWSCAS.2015.7282118","DOIUrl":"https://doi.org/10.1109/MWSCAS.2015.7282118","url":null,"abstract":"This paper introduces a scaled IIR filter based on stochastic computation. The stochastic IIR filter can provide an area-efficient hardware implementation that replaces a multiplier used in a traditional implementation by a simple logic gate. However, it strongly suffers from overflow of internal values as stochastic computation represents limited real values within -1 to 1, which significantly degrades the performance of the stochastic IIR filter. In order to maintain internal values within -1 to 1, the proposed stochastic IIR filter exploits a scaling method based on an L∞ norm. An input signal is scaled down by a scaling coefficient and then is scaled up after a feedback-loop block to provide a signal amplitude desired. As a design example, second-order low-pass IIR filters based on stochastic computation are designed and simulated in MATLAB. The proposed scaled stochastic IIR filter provides a similar response to an ideal floating-point IIR filter while a stochastic IIR filter without scaling degrades a signal amplitude by 19.2 dB with a frequency lower than a desired cutoff frequency.","PeriodicalId":216613,"journal":{"name":"2015 IEEE 58th International Midwest Symposium on Circuits and Systems (MWSCAS)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127937306","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
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