Research on distortionless transmission of digital baseband signal of mine monitoring system 矿用监控系统数字基带信号无失真传输的研究
2.
At last , an ecg distortionless data compression algorithm is proposed in this paper . this algorithm is brief , effective and easy to be processed at real time by single - chip microcomputer 最后，提出了一种心电数据的无损压缩编码方法，该算法简单有效，利于单片机实时实现。
3.
Ab stract the author is engaged in the studying and manufacturing of an intelligent , capable and portable , multifuctional electrocardio monitoring equipment with aduc8 12 single - chip . microcomputer . the equipment can gather and record the electrocardio signals automatically , also can analyse it at real time , and send it out to the monitoring center through the telephone at real time or send it out by serial interfaces to computer . it use the graph display device to show the electrocardio waves and menu . cooperated with buttons , it provides amicable interface , and makes operation simple and convenient . based on the feature of the electrocardio signals , this paper also proposes a electrocardio distortionless data compression algorithm . the algorithn is simple but effective , it can process the data at real time , and the compression - ratio reaches 2 6 所研制的监护仪能长时间采集和记录心电信号，同时可进行心电数据的实时分析，并可通过电话向监护中心实时发送，也可通过串行接口发送至微机。该监护仪采用图形液晶显示器显示心电波形和菜单，配合按键提供友好的人机界面，操作简洁。本文还根据心电波形的特征，提出一种心电数据的无损压缩算法，该算法简单有效，能实时实现，压缩比达到2 6倍。
4.
The theoretical research , computer simulation and experimental results analysis show that maskless laser interferometric lithography and holographic lithography have the characteristics of large field of view , high resolution , distortionless , relatively simple system structure , low costs and convenient realization way . they have a broad application prospect 激光干涉光刻技术研究四川大学博士学位论文理论研究、计算模拟和实验结果分析表明，无掩模激光干涉光刻和全息光刻具有大视场、高分辨率、无畸变、系统相对简单、成本较低，实现方便等特点，具有广阔的应用前景。
