A Quick Display Method of Integrated Circuit Waveform Image

Abstract

The invention belongs to the field of integrated circuits, and particularly relates to a method used for increasing display speed in the aspect of viewing related waveform images, guaranteeing display precision at the same time, and reducing memory consumption. According to the method, waveform data are read into a memory according to display requirements of users, and if the consumed memory exceeds a specified value, the waveform data which are read in and are inactive at present are called out of the memory and written in a hard disk, so that it is guaranteed that storage space required by the waveform data cannot be too large. Meanwhile, according to a waveform range needing to be displayed by the users, original waveform data are obtained; according to display density requirements, interpolation is conducted on the original waveform data; meanwhile, peak points are detected and kept, and high precision of waveform display is kept.

Description

[0001] Technical field: [0002] The invention belongs to the field of integrated circuits and relates to a method for rapidly displaying integrated circuit waveform images. The method can improve display speed in viewing related waveform images, while ensuring display accuracy and saving memory consumption. [0003] technical background: [0004] In the prior art, waveform simulation files in integrated circuits require a corresponding image viewer to perform a series of work such as measurement, inspection, and proofreading. With the continuous expansion of the scale of integrated circuits, more and more waveform node voltage and current values ​​need to be recorded every time the integrated circuit is simulated, and the step size and simulation time also need to be finer and longer. This is to ensure correctness, which makes the waveform simulation file itself more and more huge. [0005] Most of the current popular waveform file formats are stored linearly, including the f...

AI Technical Summary

Problems solved by technology

[0006] Existing waveform viewing software such as the open source software GWAVE (http: / / gwave.sourceforge.net / ) and Synopsys’ Sandworks (http: / / www.synopsys.com) have many problems in realizing waveform display, for example: 1 .Or read all the waveforms into the memory, resulting in excessive memory usage, or even exhaustion, but the actual waveforms are rarely viewed; 2. Or operate on all waveform data when the waveform is displayed and zoomed in and out , causing the system to respond too slowly, etc.

Images