Graphic display device of time chart

Abstract

Abstract PURPOSE:To easily observe the mutual relation and timing of various signals by displaying the variation of the various signals with time on a CRT as a time chart. CONSTITUTION:Various process data read out of a program to be debugged are inputted to an input circuit 1, and sampled at a specific sampling period and inputted to a CPU2. The CPU2 is stored with data which is precedent one sample period and when all data coincide completely with said stored data, no processing is performed and the next input is expected. When >=1 data is different from said stored data, on the other hand, the variation pattern of each data is detected and a corresponding graphic code is stored in a memory 4. When data is displayed, the character code and graphic code of the data are read out and a predetermined figure is edited corresponding to each graphic code as to the data and displayed on the CRT5.

Inventors

• 👤 Shigeo Toyoshima
• 👤 豊嶋　繁雄
• 👤 Tatsuhiro Imada
• 👤 今田　達裕

Bibliographic Details