| 摘要 |
PURPOSE:To prevent the incorrectness of display due to overtaking by executing plotting commands whose plotting ranges do not overlap or the plotting commands whose poltting ranges overlap but which are of the same color in parallel by each processor. CONSTITUTION:A computer main body 101, display terminal equipment 102, CPUs 104, 105, a main storage device 106, a display storage device 107 and a bus 103 are provided. Then, in the case that the plotting commands with sepentiality are inputted successively to a display device provided with plural processors, the plotting range of the plotting command inputted successively is calculated, and besides, the plotting color is extracted out of the plotting command, and the plotting range and the plotting color of the command being plotted are compared with each other processor for the calculated plotting range and the extracted plotting color, and as the result of that comparison, the plotting commands whose plotting ranges do not overlap or the plotting commands whose plotting ranges overlap but which are of the same color, are executed in parallel in each processor. |
