| 摘要 |
PROBLEM TO BE SOLVED: To provide a plotting device whereby the volume of intermediate data is drastically reduced. SOLUTION: A plotting command received by an input control part 1 is transmitted one of a raster plotting part 2, a vector plotting part 3 and a character plotting 4 and an edge list is generated. An intermediate data generating part 5 receives the edge list, generates intermediate data which is divided at every band width and executes storage in an intermediate data buffer 6. Intermediate data adds chrominance information and plural intermediate data cells. The intermediate data cells add difference between two run positions and run- length. The plural kinds of data length of the intermediate data cells exist and a format having data width required for indicating position difference is selectively used. An extension output control part 7 takes-out intermediate data at every band from the intermediate data buffer 6 so as to extend it in bit map data, writes it in band buffers 8 and 9 and outputs it from an output device 10. |
