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The design of high-speed optical fiber communication system based on PCI bus (EI CONFERENCE) 会议论文  OAI收割
2010 2nd IEEE International Conference on Advanced Management Science, ICAMS 2010, July 9, 2010 - July 11, 2010, Chengdu, China
作者:  
Zhang L.-G.;  Zhang L.-G.;  He X.
收藏  |  浏览/下载:57/0  |  提交时间:2013/03/25
In order to increase the transmission distance and reduce noise effectively  a communication system with the optical fiber interface is developed in this paper. In the system  the PCI bus is adopted as the connection bus between the underlying optical fiber transceiver module circuitry and host computer using the WDM driver. The FPGA is the core logic of the whole system  responsible for data transmission and timing logic control. The module structure and the design method of the PCI bus  the principle and the design of optical interface module and the bottom-driven development are described in this paper. The experiment results show that the system has basically meet requirement targets. It can achieve the maximum transfer rate of 40MBps when running in the DMA mode. With long transmission distance  strong antiinterference and high scalability  this system has stable and reliable performance. 2010 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:61/0  |  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.  
A Prototype of the Read-out Subsystem of the BESIII DAQ Based on PowerPC 期刊论文  OAI收割
Plasma Science & Technology, 2005, 期号: 5, 页码: 3065-3068
作者:  
Tao N(陶宁);  Chu YP(初元萍);  Jin G(金革);  Zhao JW(赵京伟)
收藏  |  浏览/下载:15/0  |  提交时间:2015/12/21
A prototype of the read-out subsystem of the BESIII DAQ based on PowerPC 期刊论文  OAI收割
PLASMA SCIENCE & TECHNOLOGY, 2005, 卷号: 7, 期号: 5, 页码: 3065-3068
作者:  
Ning, T;  Chu YP(初元萍);  Zhao JW(赵京伟);  Chu, YP;  Ge, J
收藏  |  浏览/下载:25/0  |  提交时间:2016/06/29