中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共4条，第1-4条

帮助

条数/页：排序方式：
	Automating Characterization Deployment in Distributed Data Stream Management Systems 期刊论文 OAI收割 IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING, 2017, 卷号: 29, 期号: 12, 页码: 2669-2681 作者: Wang, Chunkai; Meng, Xiaofeng; Guo, Qi; Weng, Zujian; Yang, Chen \| 收藏 \| 浏览/下载：89/0 \| 提交时间：2019/12/12 Stream processing system relational query system incremental learning modeling and prediction
	Designing and development of multi-DSP real-time image processing system based on FPGA (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Computer Science and Network Technology, ICCSNT 2011, December 24, 2011 - December 26, 2011, Harbin, China Wei H. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 To improve the image processing system of resolution capability and reliability image processing system in a growing number of multi-sensor model. In this mode the use of the current main stream single DSP + FPGA hardware architecture for image processing algorithms have already unable to meet the operational requirements of real-time. This paper proposed a new hardware architecture that is the three DSPs based on FPGA. With the traditional master-slave architectures is different three DSP's external interfaces are connected with FPGA and other peripheral interfaces are connected to the FPGA. In the architecture DSP is in the same position three and FPGA flow control for data management and other function to achieve. This connection has a strong restructuring and expansion software development and more flexible. 2011 IEEE.
	Storage and compression design of high speed CCD (EI CONFERENCE) 会议论文 OAI收割 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, November 19, 2008 - November 21, 2008, Chengdu, China Cai X.; Zhai L. P. 收藏 \| 浏览/下载：64/0 \| 提交时间：2013/03/25 In current field of CCD measurement large area and high resolution CCD is used to obtain big measurement image so that speed and capacity of CCD requires high performance of later storage and process system. The paper discusses how to use SCSI hard disk to construct storage system and use DSPs and FPGA to realize image compression. As for storage subsystem Because CCD is divided into multiplex output SCSI array is used in RAID0 way. The storage system is composed of high speed buffer DMA controller control MCU SCSI protocol controller and SCSI hard disk. As for compression subsystem according to requirement of communication and monitor system the output is fixed resolution image and analog PAL signal. The compression means is JPEG2000 standard in which 9/7 wavelets in lifting format is used. 2 DSPs and FPGA are used to compose parallel compression system. The system is composed of FPGA pre-processing module DSP compression module video decoder module data buffer module and communication module. Firstly discrete wavelet transform and quantization is realized in FPGA. Secondly entropy coding and stream adaption is realized in DSPs. Last analog PAL signal is output by Video decoder. Data buffer is realized in synchronous dual-port RAM and state of subsystem is transfer to controller. Through subjective and objective evaluation the storage and compression system satisfies the requirement of system. 2009 SPIE.
	an approach to handle overload in real-time data stream management system 会议论文 OAI收割 5th International Conference on Fuzzy Systems and Knowledge Discovery, Jinan, PEOPLES R CHINA, OCT 18-20, Ma Li; Li Xin; Wang Yongyan; Wang Hong-an \| 收藏 \| 浏览/下载：22/0 \| 提交时间：2011/06/13 data arrival effective deadline-aware random load shedding algorithm handle overload real-time data stream management system time-critical environment data handling query processing scheduling