| 摘要 |
PURPOSE:To give an impression by the dynamic movement of a pattern traveling continuously by providing a screen control memory stored with the brightness of every screen dot in addition to its color information. CONSTITUTION:To write color information in corresponding screen dot memory 6 by interpreting pattern command list 2, fixed brightness (i) is set in corresponding screen control memory 7 at the same time, brightness stored in screen control memory 7 corresponding to a pattern before its movement at every time of single pattern movement is decreased one by one, and brightness (i) is set in screen control memory 7 corresponding to a new pattern after the movement. Until the movement of a desired distance is completed, the above-mentioned operation is repeated and the brightness of the color information in screen dot memory 6 is varied according to a value set in the screen control memory. Thus, the locus of the pattern on the CRT9 screen can be found. |
