高速视频记录应用的一种解决方案  

A Solution for High-Speed Video Recording

作　　者：刘旨春[1] 于小波[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所,长春130033

出　　处：《微计算机信息》2006年第11S期128-130,共3页Control & Automation

基　　金：中科院创新基金资助项目(J04B132)

摘　　要：在PC平台上进行高速数据记录,由于受局部总线速度和文件系统的影响,速度很难超过每秒20M字节。我们设计了一种新的方案,总线采用时钟频率为66MHz,数据位宽为64bits的PCI总线,提高了总线速度。采用Adaptec公司的ASPI指令直接控制SCSI接口卡读写硬盘,摆脱了文件系统对写入速度的影响。记录媒质是由两块SCSI硬盘组成的RAID0级阵列,提高存储媒体的物理写入速度。实验结果证明,存储速度得到很大提高,稳定速度达到每秒100M字节以上。High-Speed Video Recording on the PC ,the speed is less than the 20M Bytes of per second for affect of the speed of local bus and file system . Then the new solution was designed, the PCI bus is the clock of 66M , the width of 64 bits, the speed of the bus was increased. Direct control to read and write the hard disk by the ASPI instruction of Adaptec Company can avoid the affect of file system. Record media is the RAID0 level array of two disks,it improved the speed of writing of physical media. The result of the experiment proves that the speed of recording was up to 100M bytes per second and was increased a lot of.

关 键 词：视频记录 SCSI ASPI DMA 

分 类 号：TP333.3[自动化与计算机技术—计算机系统结构]