一种高效的模拟波形数据压缩方法

An Efficient Compression Method for Analog Waveforms

随着集成电路规模的增加,电路仿真的波形数据量也急剧膨胀.为了降低存储量,提出了一种高效的模拟波形数据压缩方法.该压缩方法是流压缩方法,采用预测、量化、编码等技术,所需的数据缓冲存储量很小,可在电路仿真时对仿真波形进行实时压缩和输出.在保持数据精度的同时,该方法可以达到很高的压缩比.该方法计算复杂度低,可以处理大数据量的波形文件,是一种非常实用的压缩方法.实际电路的仿真波形压缩测试结果表明,当波形误差在0.1%左右时,压缩文件大小仅为原文件的10%左右,极大地降低了数据存储量.

The simulation data increases drastically with the increasing scale of integrated circuit（IC）. In order to reduce the size of simulation data, an efficient compression method for analog waveforms is proposed which can achieve high compression ratio and guarantee the accuracy. Furthermore, the computational cost is remarkably lower and it can handle mass data efficiently. Meanwhile, the proposed compression method is a stream compression method. The buffering requirement is remarkably lower. The simulation data can be compressed during the simulation. Experimental results demonstrate that the proposed method can achieve 10~ compression ratio with 0.1 ~//0 error.