中国科学院机构知识库网格系统: 检索

香山开源高性能RISC-V处理器设计与实现 期刊论文 OAI收割
计算机研究与发展, 2023, 卷号: 60, 期号: 3, 页码: 476
作者: 王凯帆; 徐易难; 余子濠; 唐丹; 陈国凯

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收藏 | 浏览/下载：41/0 | 提交时间：2024/05/20

RISC-V high performance processor open source chip design agile development RISC-V 高性能处理器开源芯片设计敏捷开发

高性能数字信号处理器中动态电路设计的关键技术研究 学位论文 OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院大学, 2015
作者: 林玻

收藏 | 浏览/下载：103/0 | 提交时间：2015/09/02

动态电路多米诺逻辑高性能处理器建库单边化电路综合逻辑单元库推泡法 domino logic dynamic circuits Algebraic processor high performance design flow cell library synthesis bubble pushing

Design of high speed and parallel compression system used in the big area CCD of high frame frequency (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Precision Engineering and Non-Traditional Machining, PENTM 2011, December 9, 2011 - December 11, 2011, Xi'an, China
作者: Li G.-N.

收藏 | 浏览/下载：62/0 | 提交时间：2013/03/25

According to the area CCD camera of characteristics such as high resolution capacity and high frame frequency this paper puts forward a high speed and parallel image compression system of high integration degree. Firstly according to the work principle of the area CCD FPGA is adopted to realize the timing driving and multichannel and parallel analog signal handling to raise the export frame frequency of the area CCD. Secondly with an image compression scheme based on FPGA embedded processor MicroBlaze and ADV212 compression chip real time image compression and the high speed area CCD are realized. Finally by detecting the analog signal of the area CCD output the real time compression of the big area CCD image is carried out in different compression ratios and the compression performance is analyzed. Experiment result shows that this scheme can realize real time image compression with the biggest data rate of 520Mbps. When compression bit ratio is 0.15 the signal-to-noise ratio of peak value can reach 36 dB. Image collection and image compression are integrated which reduces the data transmission between them and improves systematic integration degree.

808nm high-power semiconductor laser therapeutic apparatus based on LPC2138 (EI CONFERENCE) 会议论文 OAI收割
2011 IEEE International conference on Intelligent Computation and Bio-Medical Instrumentation, ICBMI 2011, December 14, 2011 - December 17, 2011, Wuhan, Hubei, China
作者: Wang B.; Wang B.

收藏 | 浏览/下载：50/0 | 提交时间：2013/03/25

In this paper we designed an intelligent 808nm high-power semiconductor laser therapeutic apparatus with the LPC2138 ARM processor. The laser is driven by the digital constant current source module and the apparatus has good human-machine interaction performance on account of set the parameters intelligently. The function such as operation mode output power output pulse width and pulse cycle could be easily set through the TFT touch screen. The application software could transmission the log data to the computer by the USB interface in order to check and study the records later. 2011 IEEE.

High precision test method for dynamic imaging of space camera (EI CONFERENCE) 会议论文 OAI收割
2010 IEEE International Conference on Advanced Computer Control, ICACC 2010, March 27, 2010 - March 29, 2010, 445 Hoes Lane - P.O.Box 1331, Piscataway, NJ 08855-1331, United States
作者: Jin L.-X.; Zhang K.; Zhang K.; Zhang K.; Zhang K.

收藏 | 浏览/下载：42/0 | 提交时间：2013/03/25

A test method for dynamic imaging of space TDICCD (Time Delay and Integration Charge Coupled Devices) camera was presented in this paper. The test method adopted the PLL (Phase Locked Loop) technology and CMAC (Cerebella Model Articulation Controller) friction compensation as control strategy. Furthermore According to this method a test system for dynamic imaging of space TDICCD camera was designed and implemented. The system simulated the movement of the ground objects relative to the space aerocraft to validate the capability of image speed match and the dynamic imaging quality of TDICCD camera. The design adopted a precision turntable and a drift turntable to simulate the movement around the earth and the drift motion in different latitude due to the rotation of earth of the aerocraft. The turntables were drived by permanent magnet torque motor which was powered by PWM (Pulse Width Modulation). The system adopted DSP (Digital Signal Processor) as the control core and reached a very high performance. The experimental results showed that the steady speed error was better than 0.01 % and the instantaneous speed error reached 0.0267%. The precision of the test system designed met the requirement for dynamic imaging of TDICCD camera. 2010 IEEE.

The application of TMS320c64x DSP assembly language in correlation tracking algorithms (EI CONFERENCE) 会议论文 OAI收割
2010 3rd International Congress on Image and Signal Processing, CISP 2010, October 16, 2010 - October 18, 2010, Yantai, China
Huang D.; Wu Z.; Liang M.; Dong Y.; Peng T.

收藏 | 浏览/下载：34/0 | 提交时间：2013/03/25

In order to improve the real-time performance of the conventional correlation tracking algorithm based on full search method for its huge computation amount and vast correlation matching times in the process of searching an optimal matching position a method of combining the TMS320C64x DSP assembly language and software pipelining is proposed to realize template matching which costs the most time of the algorithm. Choose high performance DSP chip TMS320DM642 as the core processor of the hardware platform and schedule each one of the instruction in the algorithm to maximize performance using the instruction-level parallelism of the DSP. The experimental results indicate the time of template image matching implemented in assembly language has decreased from 49.36ms to 0.62ms. It is concluded that the correlation tracking adopting proposed method can meet the real-time and stability requirement of the target tracking. 2010 IEEE.

Bootstrap loader design of aerospace payload controller based on TSC695F (EI CONFERENCE) 会议论文 OAI收割
2010 2nd International Conference on Computational Intelligence and Natural Computing, CINC 2010, September 13, 2010 - September 14, 2010, Wuhan, China
Xu W.; Piao Y.

收藏 | 浏览/下载：48/0 | 提交时间：2013/03/25

Anti-radiation TSC695F is usually used as aerospace payload controller in tasks to ensure the aerospace payload having extremely high reliability in abominable space environment. The processor bases on SP ARC V7 architecture with parity check and EDAC so it could design out high reliable bootstrap loader to guarantee the operation system of VxWorks and application codes loaded correctly and worked stable and high effective. First this paper put forward the system hardware composition and boot mode which apply for aerospace payload then it makes clear the related contents of register group initialization stack initialization system hardware initialization in bootstrap loader of TSC695F and give out the method to establish TRAP table. That's all through comparing different type of organize mode of program image. After that compiling of target codes have been described and the kernel code of MakeFile had been given at the same time for reference aimed at the realization of engineering. Although this paper is based on TSC695F but it could be extended to other embedded system based on SP ARC for bootstrap loader analysis and design for example the TSC697 which based on SP ARC V8 with higher performance so this paper has extremely high engineering value. 2010 IEEE.

high performance approach for server side soap processing 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF WEB SERVICES RESEARCH, 2009, 卷号: 6, 期号: 2, 页码: 66-93
Li Lei; Niu Chunlei; Chen Ningjiang; Wei Jun; Huang Tao

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收藏 | 浏览/下载：41/0 | 提交时间：2011/03/18

Caching Deserializing High Performance SOAP Processor Web Services XML Parsing

High performance general-purpose microprocessors: Past and future 期刊论文 OAI收割
JOURNAL OF COMPUTER SCIENCE AND TECHNOLOGY, 2006, 卷号: 21, 期号: 5, 页码: 631-640
作者: Hu, Wei-Wu; Hou, Rui

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收藏 | 浏览/下载：28/0 | 提交时间：2019/12/16

high performance general-purpose microprocessor instruction level parallelism data level parallelism thread level parallelism chip multiprocessors Godson processor

Design of video auto focusing based on image processing (EI CONFERENCE) 会议论文 OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
Meng B.; Zhu M.; Cai C.-J.

收藏 | 浏览/下载：28/0 | 提交时间：2013/03/25

In order to realize the auto focusing technique based on digital image processing a video image processing system is designed by using high-performance digital signal processor TMS320VC5509 as the core field programmable gate array FPGA for preprocessing of image. At the same time it is proposed to use vector norm sum of image gray gradient as evaluation functions of digital image. It has the characteristics of good unbiasedness powerful unimodality etc. and can be applied to evaluation of defocusing. The hardware composition of the theory behind the auto focusing system and the application of the evaluation function are discussed in details.