| 摘要 |
PURPOSE:To make it feasible to scan-expose specific straight line very rapidly by means of simple data processing by a method wherein specified variations are added to the data between specified two points utilizing two adders. CONSTITUTION:When a controller outputs data from X1, DELTAX1, Y1, DELTAY1, X2, Y2, those data are respectively inputted to latches 2-7. Next a control signal decoder 8 receives image drawing start pulse to set an FF9 while the output of FF9 attains to H to open a clock gate 11 setting an image drawing pattern output signal bus 24a to output beams. Besides, the initial data inputted to the latches 2, 4 are outputted to image draw pattern outputting buses 24b, 24c respectively through D/A converters 22, 23. On the other hand, adders 12, 13 respectively add X1+DELTAX1 and Y1+DELTAY1 while the outputs from adders 12, 13 are inputted to the latches 2, 4 to be outputted respectively to the buses 24b, 24c. Finally the outputs from latches 2, 4 may be inputted in comparators 14, 15 to be compared with terminals X2, Y2 for detecting the terminals. |
