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Reconfigurable operators: New configuration logic blocks for novel FPGA

Journal of Information and Computational science 2014年第12期11卷 4153-4166页

作者： Yong, Shanshan Wang, Xin'an Xie, Zheng Cao, Ying Key Lab. of Integrated Micro-System Science and Engineering Applications Peking University Shenzhen Graduate School Shenzhen China

For current FPGA architectures, the fine-grain programmable blocks are the most flexible ones. However, they bring in massive configuration bits-stream and much performance loss. In this paper, we propose new configuration logic blocks for the latest FPGA, a collection of Reconfigurable Operators (ReOps). A ReOp is a basic block which can process multiple bits data with a specific function set. Considering the flexibility and regularity, we divide ReOps into seven groups, which are arithmetic ReOps, shift ReOps, bitwise logic ReOps, Multiplier ReOps, Register ReOps, Multiplexer ReOps and Memory ReOps. The function set of ReOps is roundness for the arbitrary ASIC (Application Specific integrated Circuit) design. To build the development environment for this novel FPGA, we employ a new hardware design language and hardware compiler. To compare the performance between our work and other current FPGAs, we use configuration time and circuit delay as our evaluation measurements. And our experimental results show that our architecture achieves a great reduction on configuration bits-stream and comparable delay compared with Virtex5 FPGA. © 2014 Binary Information Press

关键词： Field programmable gate arrays (FPGA)

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Flexible Active-matrix micro-LED Display Utilizing InSnO TFTs with High Mobility of 39.1 cm2V-1s-1 and Mass-production Compatible Process

Flexible Active-matrix Micro-LED Display Utilizing InSnO TFT...

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2024 IEEE International Electron Devices Meeting, IEDM 2024

作者： Yu, Zuoxu Sang, Yimeng Zhang, Yuzhen Zhang, Yiyang Shi, Runxiao Liu, Siyang Tao, Tao Li, Xifeng Peng, Cong Zhang, Rong Wu, Wangran Zhuang, Zhe Liu, Bin Sun, Weifeng School of Integrated Circuits National ASIC System Engineering Research Center Southeast University Nanjing China Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials School of Electronic Science and Engineering Nanjing University Nanjing China School of Integrated Circuits Nanjing University Suzhou China Key Laboratory of Advanced Display and System Applications of the Ministry of Education Shanghai University Shanghai China

ISBN: (纸本)9798350365429

The increasing pursuit of ultrahigh resolution displays has driven the demand for thin film transistors (TFTs) with higher mobility, especially on flexible substrates. In this work, we developed InSnO (ITO) TFTs on flexible substrates and achieved a remarkable average mobility of 39.1 cm2V-1s-1, via mass-production compatible processes utilizing SiO2 gate dielectric. Benefiting from the ultra-flat surface and extremely low coefficient of thermal expansion (CTE) of our PI substrate, the ITO TFTs exhibit excellent wafer-scale uniformity, reliable mechanical flexibility, and robust bending durability. Based on the ITO TFTs, we fabricated flexible 2T1C pixel circuits that can operate in both PAM and PWM schemes. The flip-chip micro-LEDs (μ-LEDs) were transferred to a flexible PI holder nondestructively with the assistance of UV tape and present superior robustness and endurance under cyclic bending. Moreover, we bonded μ-LEDs to the 2T1C pixel circuits and demonstrated a flexible active-matrix μ-LED display. The feasibility of flexible illumination and image control has been verified, providing great potential for high-resolution flexible displays in the future. © 2024 IEEE.

关键词： Thin film transistors

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An integrated Development Environment for Reconfigurable Operators Array

An Integrated Development Environment for Reconfigurable Ope...

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International Conference on ASIC

作者： Shanshan Yong Xin'an Wang Ying Cao Yawei Lu Zheng Xie The Key Laboratory of Integrated Micro-systems Science and Engineering Applications Peking University Shenzhen Graduate School Shenzhen China

In this paper, an integrated development environment (IDE), which is used to map application into a target reconfigurable operators (ReOps) array, is presented. Having as input APU RTL description of an application, the IDE produces the configuration bitstream. The proposed IDE supports a variety of ReOps array through revising the architecture file which including the definition of ReOps, interconnection segments and connection switches, as well as the scale of array and organization of ReOps. A set of benchmarks is given to verify the flow of proposed IDE.

关键词： IDE APU RTL

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A real-time rate control scheme and hardware implementation for H.264/AVC encoders

A real-time rate control scheme and hardware implementation ...

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Congress on Image and Signal Processing, CISP

作者： Teng Wang Yingrui Chen Yong He Xin'an Wang Lei Zhao Key Laboratory of Integrated Micro-Systems Science Engineering and Applications Peking University Shenzhen Graduate School Shenzhen China

Rate control plays an important role in video encoders with the complex application environment and limited network bandwidth to obtain a better performance. According to the features of the encoded bit stream, rate control algorithm can dynamically adjust the quantization parameter in different levels of the encoding procedure. In this paper, a real-time rate control scheme for hardware implementation in H.264/AVC encoders is proposed. Different from other rate control algorithms focusing on the performance without considering the cost of hardware realization, the proposed scheme is applicable for hardware implementation with low hardware complexity. The simulation results show that the proposed scheme has lower fluctuation in video quality, and owns almost the same visual quality as that of X.264. The proposed scheme is implemented using SIMC 65nm CMOS technology with a clock frequency of 240MHz, which can be easily integrated into our low cost, real-time video encoder.

关键词： Encoding Hardware Video coding Streaming media Bit rate Complexity theory Real-time systems

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Ultra low power circuits design based on III-V group heterojunction tunnel field effect transistor

Ultra low power circuits design based on III-V group heteroj...

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International Conference on ASIC

作者： Jipan Huang Fang Gao Xin'an Wang Hongying Chen The Key Laboratory of Integrated Micro-systems Science and Engineering Applications Peking University Shenzhen Graduate School Shenzhen China

With the scaling down of MOSFET, the static leakage current increases exponentially since the Subthreshold Swing(SS) is limited by the thermal theory to 60mV/dec. Tunnel field effect transistors based on BTBT have slope Subthreshold Swing and can be used for low power applications. In this paper, InverterFO1, two-input XOR gates and SRAM cell based on III-V heterojunction TFET are designed and evaluated. Leakage power of TFET InverterFO1 decreased to 1.7%. Leakage power of SRAM cell obtains 76.3X improvements over 130nm CMOS commercial model at VDD=0.6V. Meanwhile, this paper talks about the effect of asymmetry Current of TFET to the topology structure of pass-transistor based circuits.

关键词： TFETs SRAM cells CMOS integrated circuits MOSFET Circuit stability

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Compare of three micropattern methods for high-throughput cell arrangement 21

Compare of three micropattern methods for high-throughput ce...

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21st International Conference on Miniaturized systems for Chemistry and Life sciences, microTAS 2017

作者： Hun, Tingting Liu, Yaoping Guo, Yechang Liu, Xiaoyi Wang, Wei Sun, Yan Fan, Yubo School of Biological Science and Medical Engineering Beihang University Key Laboratory for Biomechanics and Mechanobiology of Ministry of Education Beijing100191 China Institute of Microelectronics Peking University Beijing100871 China National Key Laboratory of Science and Technology on Micro/Nano Fabrication Beijing100871 China Innovation Center for Micro-Nano-electronics and Integrated System Beijing100871 China State Key Laboratory of Transducer Technology Chinese Academy of Sciences Shanghai200050 China

ISBN: (纸本)9780692941836

Investigations on single-cell level are significant in cellular researches, and the captured of single cell have been reported by many researchers. However, there is still a lack of effective methods to realize high-throughput cell capture and arrangement simultaneously. In this paper, we compared three micropattern methods for high-throughput cell capture and arrangement, and we found a micropore-arrayed membrane based micropattern method could reach efficiency higher than 90%. © 17CBMS-0001.

关键词： Cytology

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A Method to Recognize Sleeping Position Using an CNN Model Based on Human Body Pressure Image

A Method to Recognize Sleeping Position Using an CNN Model B...

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IEEE International Conference on Power, Intelligent Computing and systems (ICPICS)

作者： Zhong Liu Xin'an Wang Mingliang SU Ken Lu School of Electronics Engineering and Computer Science Peking University China Key Laboratory of Integrated Micro-System Science and Engineering Applications Peking University Shenzhen Graduate School Shenzhen China iFutureLab Inc. USA

Sleep is an important part of human life. Recognition of sleeping position is an important part of judging the quality of sleep, warning disease and prevention of pressure sores. At present, the body pressure is being used as a commonly method to recognize sleep gesture, and most of it is based on methods of extracting features, mainly based on local signs and global features. This paper proposes a deep learning method based on CNN deep learning method to deal with recognition of body pressure image. Compared with the previous methods, the method based on CNN neural network achieves higher accuracy of recognition at a lower cost and is suitable for complex application environments, which has good practical value.

关键词： Sleep apnea Feature extraction Convolution Kernel Image recognition Biological neural networks Sensors

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A Study on Sleep Position Recognition of Body Pressure Image based on KPCA and SVM

A Study on Sleep Position Recognition of Body Pressure Image...

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IEEE International Conference on Power, Intelligent Computing and systems (ICPICS)

作者： Zhong Liu Xin'an Wang Yang Le Jone Sun School of Electronics Engineering and Computer Science Peking University China Key Laboratory of Integrated Micro-System Science and Engineering Applications Peking University Shenzhen Graduate School Shenzhen China iFutureLab Inc. USA

ISBN: (纸本)9781728137216

Sleep is an important part of life, and sleep position recognition is an important indicator which reflects sleep quality, warns diseases and prevents pressure sores. Actually, sleep quality is usually related to the body pressure, which affects muscle comfort and blood circulation during sleep. However, in order to regulate the body pressure, one vital step is to recognize the sleep position. Body pressure is a common indicator of the recognition of sleep position. This investigation put forward a body pressure recognition method combining with kernel principal component analysis (KPCA) and support vector machine. The feature extraction based on KPCA can well solve the nonlinear separable problems as well as dimension reduction processing of PCA, and reduce the system's complexity. Compared with the image recognition method and computer vision recognition method, it realized a higher recognition accuracy at a lower cost. Ultimately, the recognition accuracy of six common sleep positions reached 96.5%.

关键词： Sleep apnea Support vector machines Image recognition Mathematical model Feature extraction Training Principal component analysis

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Highly precise and efficient cell separation with parylene c micropore arrayed filtration membrane 19

Highly precise and efficient cell separation with parylene c...

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19th International Conference on Miniaturized systems for Chemistry and Life sciences, microTAS 2015

作者： Liu, Y. Wang, W. Wu, W. Li, H. Sun, Y. Institute of Microelectronics Peking University Beijing100871 China National Key Laboratory of Science and Technology on Micro/Nano Fabrication 100871 China Innovation Center for Micro-Nano-Electronics and Integrated System Beijing100871 China No. 1 Hospital of Peking University Beijing100871 China School of Biological Science and Medical Engineering Beihang University Beijing100191 China

ISBN: (纸本)9780979806483

Very large scale micropore array has been recognized as a promising tool for separation and enrichment of rare targeted cells from a large sample volume. A high cell separation performance is strongly dependent on a small interspace between the separation pores (smaller than radius of the cell to avoid non-specific adhesion). Parylene C is a widely-used polymer in the MEMS for flexible thin film device preparation and some Parylene C based filtration devices have been applied for cell separation. This paper demonstrated a highly precise and efficient cell separation at a very high throughput driven only by the gravity with a very large scale (640000 micropores in 11 mm × 11 mm area) Parylene C micropore arrayed filtration membrane of ultra-high porosity. © 15CBMS-0001.

关键词： Cells

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Improved subarray coherence factor beamformer for ultrasound plane-wave imaging

Improved subarray coherence factor beamformer for ultrasound...

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2023 International Congress on Ultrasonics, ICU Beijing 2023

作者： Guan, Huchang Jiang, Chen Xu, Kailiang Ta, Dean Department of Biomedical Engineering School of Information Science and Technology Fudan University Shanghai200438 China State Key Laboratory of Integrated Chips and Systems Fudan University Shanghai201203 China Micro-nano System Center School of Information Science and Technology Fudan University Shanghai200438 China State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science Fudan University China

Coherent plane-wave compounding (CPWC) has gained significant traction in medical ultrasound imaging. The coherence factor (CF) weighting algorithm, a classical adaptive beamforming strategy, aims to enhance the CPWC imaging lateral resolution, but it also noticeably compromises the speckle patterns, *** a low signal-to-noise ratio (SNR). Delay multiply and sum (DMAS) has been proposed to reduce side lobes. However, the reconstructed image quality with DMAS is limited in terms of resolution and speckle level. In the present study, an improved subarray coherence factor (ISCF) algorithm is introduced by combining CF with DMAS strategies, aiming to improve the contrast and resolution while preserving the speckle level. The performance of the proposed algorithm is evaluated using simulation and phantom datasets. Results indicate that the resolution and the contrast of ISCF can be improved by 41.6% and 79.4%, respectively;compared with delay and sum (DAS) algorithm. Additionally, the resolution and the speckle level of ISCF can be improved by 10.6% and 35.7% compared with CF algorithm, respectively. The proposed ISCF algorithm outperforms CF in terms of resolution, contrast, and speckle preservation. © 2024 Institute of Physics Publishing. All rights reserved.

关键词： Ultrasonic imaging

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