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International Conference on (ICEPT) Electronic Packaging Technology

作者： Dongfang Cheng Xiaohui Li Jue Zhang Jiongming Wang Key Laboratory of Advanced Displays and system Application Ministry of Education Microelectronic Research & Development Centre Shanghai University Shanghai China

A dual-output voltage bandgap reference has been designed for high-accuracy pipelined ADC with CSMC0.6 process technology in this work. Based on the temperature and noise analyzing of voltage reference, the traditional circuit has been improved. The structure with two PN junctions in series,non-operational amplifier structure and PTAT (proportional to absolute temperature) current supplied by ldquoself-biasrdquo cascode current mirror, were adopted in the circuit designed. A new method to divide voltage was suggested in this study. The simulation results showed that the dual-output voltages were 2.194 V and 1.098 V respectively when temperature varied from -10 degC to 100 degC, and the temperature coefficient is only 7.00 ppm/degC; the change of V ref only was 5.326 mV, and the PSRR was 49.3 dB when source voltage varied from 6 V to 9 V. The dual-output voltage reference of the circuit designed can meet the requirement of comparator input voltage in high-accuracy pipelined ADC.

关键词： Photonic band gap Temperature Temperature sensors Integrated circuit modeling Accuracy Converters Equations

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Eye-hand coordination based human-computer interaction

International Journal of Signal Processing, Image Processing...

引用

International Journal of Signal Processing, Image Processing and Pattern Recognition 2016年第10期9卷 205-216页

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

Human-computer interaction (HCI) has great interactive applications in many fields. A novel eye-hand coordination based HCI approach has been proposed. According to the fact that the eye gazing starts prior to the hand movement and reaches the target in advance, an eye-hand coordination model in a non-contact way is constructed by facial orientation and skeletal joints of hand. Both temporal median filtering and moving average filter strategies are developed to overcome some fluctuation influences during HCI. The diversity of interactive habits among multiple users is considered in an ordinary hardware from a crowded scene without any hypothesis for the scenario contents in advance. Comparative comparisons with state-of-the-arts have highlighted the superior performance of the proposed approach. © 2016 SERSC.

关键词： Human computer interaction

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Automatic Optimal View Selection for Natural HCI

Automatic Optimal View Selection for Natural HCI

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Congress on Image and Signal Processing, CISP

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

Multiple cameras can be used to detect a certain object in a wide area so that users can freely move inside a wider interaction environment. One key problem is how to select the most appropriate camera with better view to perform a natural human-machine-interaction (HCI). An unsupervised scheme is developed for a best view selection. Face skin information is explicitly employed as view quality. The proposed view measurement has been defined which facilitates the system to select the most appropriate camera automatically. The proposal overcomes the effects of camera view directions and the distances between the user and the camera in selecting the best view. The approach is tested with different face databases and an actual interaction environment which shows that it is flexible and computational cost-effective. Experiments have highlighted that the mentioned method is robust and efficient when selecting the best view in a multi-camera system.

关键词： Human computer interaction Cameras Object detection Face detection Skin Proposals Testing Databases Computational efficiency Robustness

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Design of ADC Control Module in a MCU

Design of ADC Control Module in a MCU

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International Conference on Natural Computation (ICNC)

作者： Yueli Hu Ke Yan Wenyi Jing Key Laboratory of Advanced Displays and system Application Ministry of Education Microelectronics Research and Development Center Shanghai University Shanghai China

A new method for ADC IP integration in a mixed-signal MCU is proposed in this paper. The single conversion of ADC is controlled by three modes: software triggered mode, hardware triggered mode and PWM triggered mode. ADC and the PWM control module can work independently under software and hardware triggered mode. PWM triggered mode used for real-time monitoring is an innovation of the paper, which simplifies software and improves the operating efficiency of MCU. The design of the ADC control module is elaborated and full-chip mixed-signal verification using Nanosim-VCS is also given.

关键词： Pulse width modulation Registers Hardware CMOS technology application software Monitoring Clocks Integrated circuit technology Energy consumption Computer displays

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Warpage simulation for LCD interconnected by NCF

引用

Cailiao Kexue yu Gongyi/Material Science and Technology 2010年第6期18卷 857-861页

作者： Zhang, Jian-Hua Yuan, Fang Zhang, Jin-Song Key Laboratory of Advanced Display and System Applications of Ministry of Education Shanghai University Shanghai 200072 China College of Mechatronics Engineering and Automation Shanghai University Shanghai 200072 China

To study the reliability of the Chip-on-Glass (COG) module interconnected by Non-Conductive-Adhesive (NCF), this paper applied finite element method (FEM) to simulate the fields of temperature and stress in COG. A 3D model of the COG module had been established and a sequence coupled field had been done to calculate the warpage and inner stress. In the thermalcompression bonding stage, the thermal process was a steady state, which produced a low temperature difference in the COG module, while the NCF absorbed and relaxed the thermal stress and strain to weaken warpage. In the cooling stage, the process was non-steady and a significant temperature difference between the interfaces of bump/NCF and NCF/substrate was induced at the beginning. This generated a high thermal stress difference to yield a large warpage. The residual stress and warpage were proportional to the decrease of the mechanical loading in the thermal compression bonding stage and the temperature difference in the cooling stage.

关键词： Glass

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Solution for Hybrid Bandwidth Variation in Wireless Video Environments

Solution for Hybrid Bandwidth Variation in Wireless Video En...

引用

IEEE International Workshop on Mobile Commerce and Services (WMCS)

作者： Zhi-gang Li Zhao-yang Zhang Biao Wu Ying Zhang School of Communication and Information Engineering Shanghai University Shanghai China Key Laboratory of Advanced Displays and System Application Ministry of Education

With the development of broadband wireless networks, high efficiency of wireless video transmission has been received increasingly greater attentions than before. One should settle the problems of high-compression efficiency and that of adaptation to the random variation of transmission bandwidth, as well as a network friendly design, in wireless environments. SP (Synchronization-Predictive) frame, which enables high efficiency of switching between two or more bitstreams with different qualities, is supported by H.264/AVC extended profile suitable for mobile services. On the other hand, FGS (fine-granular-scalability), which can always adapt to the network bandwidth varying but with some sacrifice of coding efficiency, is supported by MPEG-4. This paper proposes a solution for combination these two tools with each other so as to accommodate high bandwidth variations of wireless networks and low bandwidth variations flexibly for transmitted streams. Moreover, it also improves the efficiency of video streaming. Experimental results show that our proposed system outperforms FGS by 0.76 dB and the H.264/AVC-based video stream switching approach by 0.51 dB on average under 3GPP/3GPP2 wireless common test conditions

关键词： Bandwidth Streaming media Encoding Automatic voltage control Switches Wireless networks MPEG 4 Standard Decoding Video coding displays

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Design and Fabrication of a Novel 3-Dimension Sensor and Its application for Implant Mechanical Testing

Design and Fabrication of a Novel 3-Dimension Sensor and Its...

引用

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

作者： Ke Xue Zikai Hua Jianhua Zhang Key Laboratory of Advanced Display and System Applications The School of Mechanical & Electronic Engineering and Automation Shanghai University Shanghai China

A new three dimensions force sensor for the multi-function artificial joints simulator is proposed and developed. In this study, the main design and fabrication process is introduced. The different design factors are compared and their influence is also discussed. Furthermore, the relative solutions to the problem are analyzed. By FEA analysis, the sensor is optimized, and the results show that the three dimensions force sensor performance is accurate and reliable. The 3-D sensor can meet the requirements of the friction measurement in the multi-function tribological simulator.

关键词： Fabrication Mechanical sensors Implants Testing Force sensors Capacitive sensors Hip Stress Friction Strain measurement

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Hardware /software co-design for Viterbi decoder

Hardware /software co-design for Viterbi decoder

引用

International Conference on (ICEPT) Electronic Packaging Technology

作者： Ming Li Tao Wen Microelectronics Research & Development Center Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University China

Convolutional code and Viterbi decoding is one of the methods used for channel coding. Convolutional coding is widely used in many aspects because of its excellent performance. However, both the coding algorithm and hardware implementation are very complex. Along with the continuous deepening of SOC design, hardware-software co-design technology has become more and more important as one part of SOC design. A hardware-software platform used for the design of the Viterbi decoder is proposed in this paper. The platform includes embedded software, hardware acceleration, and peripheral interface. Good practicality and powerful verification functions are proved, and optimum design for the Viterbi decoder can be achieved by using the platform.

关键词： Hardware Software Viterbi algorithm Decoding Computer architecture Field programmable gate arrays system-on-a-chip

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A Test Platform for Turbo Encoder & Decoder Based on S3C2410

A Test Platform for Turbo Encoder & Decoder Based on S3C2410

引用

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

作者： Ming Li Jing-sai Jiang Ming-ming Peng Fa-yu Wan Microelectronic Research & Development Center Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University China

Encoder & decoder are absolutely necessary and important in digital communications. This article introduces one kind of test system, which can estimate the performance of turbo encoder & decoder. It includes system composition principle, hardware and software architecture and test function. The practicability of the system is strong and its connection is convenient. After adjusting the test software, the system can also test other types of encoder & decoder.

关键词： Embedded system Operating systems Iterative decoding system testing Hardware Embedded software Microprocessors Energy consumption application software Software testing

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Theoretical and experimental studies on microcavity organic light-emitting diodes with different emitters

Theoretical and experimental studies on microcavity organic ...

引用

16th Annual Conference and 5th International Conference on Chinese Society of Micro-Nano Technology, CSMNT 2014

作者： Peng, Cuiyun Wei, Mengjie Huang, Rongjuan Guo, Kunping Jing, Yuelin Xu, Tao Wei, Bin School of Mechanical Engineering and Automation Shanghai University 149 Yanchang Road Shanghai200072 China Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University 149 Yanchang Road Shanghai200072 China

ISBN: (纸本)9783038354628

We have theoretically and experimentally investigated the microcavity organic light-emitting diodes (MOLEDs) that enhanced the emission intensity and narrowed the spectra simultaneously. In this work, MOLEDs with the reflectivities of 70% and 90% have been successfully fabricated. Comparing to non-cavity OLEDs, the maximum forward electroluminescence intensity and the peak luminescence can be improved by 6.8 times and 2.2 times, respectively. The full width at half maximum could be sharply narrowed to 10 nm. The different configurations of MOLEDs with varied emitting layers have also been evaluated which fitted well with the experimental results. © (2015) Trans Tech Publications, Switzerland.

关键词： Reflection

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