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International Symposium on High Density Packaging and Microsystem Integration (HDP)

作者： Jinyi Zhang Jianghua Gui Yun Feng Key Laboratory of Advanced Display and System Applications Ministry of Education Microelectronic Research & Development Center Shanghai University Shanghai China Key Laboratory of Advanced Display and System Applications Ministry of Education Microelectronic Research & Development Center Shanghai University Shanghai China

With the increase in complexity of VLSI and the test cost of automatic test equipment (ATE), logic built-in self-test (BIST) has been widely applied. In order to reduce the test time of logic BIST, logic BIST with multiple scan chains has been proposed. However, the main shortcoming of logic BIST with multiple scan chains is low fault coverage (FC). A novel two-dimensional cellular automata (2-DCA), which is called two-dimensional restricted vertical neighbor cellular automata (2-DRVNCA), is proposed to resolve this problem. Using this 2-DRVNCA as pseudorandom test pattern generator (PRPG), high FC can be achieved. In the last, this PRPG is applied on some benchmark circuits of ISCAS'89, and average FC (82% ~ 89%) is obtained.

关键词： Built-in self-test Logic testing Very large scale integration Automatic testing Costs Automatic test equipment Automatic logic units Circuit faults Test pattern generators Benchmark testing

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A design of control system for the adhesive jetting machine

A design of control system for the adhesive jetting machine

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2011 International Conference on Computers, Communications, Control and Automation

作者： Jinsong Zhang Jianhua Zhang Haili Jia School of Mechatronics Engineering and Automation Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University

Fluid dispensing was one of the main packaging technologies in the electronics industry. This study developed a control system for the adhesive jetting machine to match the no-contact requirement with high frequency and *** main control body was the computer and the control objects were the motion platform, jetting dispenser and temperature controller. The system had two control levels: the top level for the body and the bottom level for the objects. The developed software applied a hybrid programming based on Lab VIEW and Motion Assist 2.0 to provide a better operation performance and friendly interface. The prototype machine could achieve the programmed tasks after the mechanical structure and control system fabrication and the developed software installation.

关键词： control system adhesive jetting machine hardware software

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Integrating ADC IP in a SoC and Its Verification

Integrating ADC IP in a SoC and Its Verification

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International Symposium on High Density Packaging and Microsystem Integration (HDP)

作者： Yueli Hu Wenyi Jing Ying Liu Microelectronic Research & Development Center Key Laboratory of Advanced Display and System Applications Shanghai University Shanghai China

More and more analog and mixed-signal (AMS) blocks are integrated into SoC (system-on-chip) platform due to intense market competition. In this paper we proposed a method for IP integration of mixed-signal SoCs. With continuous growing of design scale and complex validation of mixed-signal functions, a new verification methodology for large mixed-signal SoC designs using Synopsys Discovery AMS platform is given to handle the daunting challenge. We will give a brief introduction with an example of SoC design which contains a reusable 10-bit SAR ADC IP block. And the detailed flow of using NanoSim-VCS co-simulation environment for the example is elaborated.

关键词： Pulse width modulation Testing system-on-a-chip Time to market Microcontrollers Microelectronics Laboratories displays Integrated circuit manufacture Semiconductor device manufacture

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A Method of Constructing and Automatically Labeling Radio Frequency Signal Training Dataset for UAV 48

A Method of Constructing and Automatically Labeling Radio Fr...

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48th IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2023

作者： Liu, Chao Ma, Ruipeng Si, Zheng Chi, Mingmin Fudan University School of Computer Science Shanghai Key Laboratory of Data Science China Zhengzhou Zhongke Institute of Integrated Circuit and System Application China Zhengzhou University School of Cyber Science and Engineering China Zhengzhou University Henan Institute of Advanced Technology China

ISBN: (纸本)9781728163277

The problem of signal detection and classification of multiple UAVs can be solved using object detection techniques in computer vision. However, this requires collecting and labeling a large amount of reliable raw data. Since the UAV signal dataset cannot be directly applied to object detection, we propose a method using time-frequency domain filtering and automatic labeling to construct a large-scale time-frequency spectrogram dataset. Experimental results show that the average recognition accuracies of image transmission signals and remote control signals under interference conditions are 97% and 82%, respectively, while the average errors of signal parameters are 0.93% and 5.57%. © 2023 IEEE.

关键词： Object detection

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Simulation Study of bump metallization on the stress and strain distributions of ACF interconnections for flip-chip-on-flex (COF) applications

Simulation Study of bump metallization on the stress and str...

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International Conference on (ICEPT) Electronic Packaging Technology

作者： S.H. Su K. Zhao S.W. Ma J.H. Zhang Laboratory of Advanced Display Technology and System Application Shanghai University Shanghai China College of Mechanical and Electrical Engineering Central South University Changsha China

Anisotropic conductive films (ACFs) are composed of an adhesive polymer matrix and fine conductive fillers using metallic particle or metal-coated polymer balls. Flip chip interconnection using ACF is being widely used in the electronic packaging. In this paper, two-dimensional nonlinear finite element analysis model was built to simulate effects of bumps' metallization on the stress and strain distributions of ACF interconnections for flip-chip-on-flex (COF) applications. The simulation results show that the bump metallization has big influence on the stress and strain. Under the thermal mechanical simulation, the stress is mainly relied on the Young's modulus of the bump while the strain is mainly depended on the CTE of the bump. In some kinds of bump/pad metallization, such as gold, nickel and copper, the copper has smaller stress, only bigger than gold, and minimum strain. If both chip bump and substrate bump fabricated by same copper, the galvanic corrosion, which occurs between two different metals and the main cause attributed to the shift of the contact resistance of ACF, does not exist. Regarding the cost and reliability synchronously, the copper may be the better substitute of gold as bump material in flip chip using ACF

关键词： Metallization Capacitive sensors Thermal stresses Copper Gold Polymer films Flip chip Anisotropic conductive films Electronics packaging Finite element methods

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The design of AGV's dynamic wireless power transmission power supply based on Adaptive Weight Value Multi-objective Genetic Algorithm 3

The design of AGV's dynamic wireless power transmission powe...

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3rd International Conference on Traffic Engineering and Transportation system, ICTETS 2019

作者： Ning, Pingfan Li, Tiantong Niu, Pingjuan Tianjin Key Laboratory of Advanced Electrical Engineering and Energy Technology School of Electrical Engineering and Automation Tianjin Polytechnic University Tianjin300387 China Engineering Research Center of High Power Solid State Lighting Application System Ministry of Education Tianjin300387 China

AGV is the application of modern factory intelligence and automation. With the development of wireless power transmission (WPT), its transmission efficiency and stability are getting higher and higher. However, from static charging to dynamic power supply, the cost of technology implementation has increased significantly. This paper proposed a method to supply power to logistics AGV by intermittent segment, established the binary coverage model according to the power coverage distance, and designed an Adaptive Weight Value Multi-objective Genetic Algorithm (AWVMOGA) for this model to Optimizing the path design of sectional power supply. The influence of three weight value adaptive methods on the optimization results is analyzed, the effectiveness of the proposed method is analyzed and verified through case simulation. © Published under licence by IOP Publishing Ltd.

关键词： Genetic algorithms

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Study of edge emission and its induced photo pumping by using microcavity organic light emitting diodes

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2nd International Conference on Opto-Electronics Engineering and Materials Research, OEMR 2013

作者： Xu, Hong Guang Ran, Feng Ji, Yuan Wei, Bin Zhu, Wen Qing Micro-electronic R and D Center School of Mechatronics Engineering and Automation Shanghai University 149 Yanchang Road Shanghai China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University 149 Yanchang Road Shanghai China

ISBN: (纸本)9783037857731

The authors have investigated the edge emission of microcavities which are formed by low-molecular organic light emitting diodes sandwiched between dielectric mirrors and the metal cathode. The edge emission relative to the surface emission is found to significantly depend on the layer number of alternating high and low refractive index films in dielectric mirrors. The enhancement of cavity devices can reach a factor of ~3.0 compared with noncavity devices. Spectra of organic film pumped by edge emission of microcavity devices have been observed, a mechanism of achievement of an amplified spontaneous emission has been discussed theoretically. © (2013) Trans Tech Publications, Switzerland.

关键词： Microcavities

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Human-computer interaction using pointing gesture based on an adaptive virtual touch screen

International Journal of Signal Processing, Image Processing...

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International Journal of Signal Processing, Image Processing and Pattern Recognition 2013年第4期6卷 81-92页

作者： Pan, Jing Guan, Ye-Peng School of Communication and Information Engineering Shanghai University China Key Laboratory of Advanced Displays and System Application Ministry of Education China

Among the various hand gestures, pointing gesture is highly intuitive, and does not require any priori assumptions. A major problem for pointing gesture recognition is the difficulty of pointing fingertip tracking and the unreliability of the direction estimation. A novel real-time method is developed for pointing gesture recognition using Kinect based depth image and skeletal points tracking. An adaptive virtual touch screen is constructed instead of estimating pointing direction. When a user stands in a certain distance from a large screen to perform pointing behaviors, he interacts with the virtual touch screen as if it is just right in front of him. The proposed method is suitable for both large and small pointing gestures, and it's not subject to users' characteristics and environmental changes. Experiments have highlighted that the proposed approach is robust and efficient to realize human-computer interaction based on pointing gesture recognition by comparisons.

关键词： Human computer interaction

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Hopf bifurcation analysis and control of a bacteria-immunity system with delayed quorum sensing 8

Hopf bifurcation analysis and control of a bacteria-immunity...

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8th International Symposium on Computational Intelligence and Industrial applications and 12th China-Japan International Workshop on Information Technology and Control applications, ISCIIA and ITCA 2018

作者： Liu, Feng Dai, Xiangjuan Mei, Qicheng Ling, Guang Sun, Fenglan School of Automation China University of Geosciences Wuhan430074 China Hubei key Laboratory of Advanced Control and Intelligence Automation for Complex System Wuhan430074 China School of Science Wuhan University of Technology Wuhan430070 China Research Center of System Theory and Application Chongqing University of Posts and Telecommunications Chongqing400065 China

A bacteria-immunity system model is formulated to describe the interaction between bacteria and immune cells with quorum sensing. Time delay is introduced to study this system. The stability and the conditions for the existence of Hopf bifurcation are obtained. Finally, numerical simulations are used to verify the theoretical conclusions. © ISCIIA and ITCA 2018 - 8th International Symposium on Computational Intelligence and Industrial applications and 12th China-Japan International Workshop on Information Technology and Control application.

关键词： Bacteria

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An efficient compressed domain moving object segmentation algorithm based on motion vector field

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Journal of Shanghai University(English Edition) 2008年第3期12卷 221-227页

作者：刘志沈礼权张兆杨 School of Communication and Information Engineering Shanghai University Shanghai 200072 P. R. China Key Laboratory of Advanced Display and System Application of the Ministry of Education Shanghai 200072 P. R. China

In this paper an efficient compressed domain moving object segmentation algorithm is proposed, in which the motion vector （MV） field parsed from the compressed video is the only cue used for moving object segmentation. First the MV field is temporally and spatially normalized, and then accumulated by an iterative backward projection to enhance salient motions and alleviate noisy MVs. The accumulated MV field is then segmented into motion-homogenous regions using a modified statistical region growing approach. Finally, moving object regions are extracted in turn based on minimization of the joint prediction error using the estimated motion models of two region sets containing the candidate object region and other remaining regions, respectively. Experimental results on several H.264 compressed video sequences demonstrate good segmentation performance.

关键词： moving object segmentation compressed domain segmentation motion vector （MV） field

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