| 摘要 |
<p>PURPOSE:To shorten a time until the print image of the next picture is displayed actually by transferring a picture by capacity equivalent to that of a display picture corresponding to a screen scroll instruction to memory for display at need. and displaying and outputting it on a screen. CONSTITUTION:A microprocessor CPU 10 performs control on the whole device, and executes document preparation processing, external character generation and furthermore, print image display processing, etc., by making access a RAM 11 and a ROM 12 and starting up a program according to an input instruction. The CPU, after developing the image data of a document of specific range, for example, in page unit comprehensively, and writing it on a print image buffer 11c according to the instruction of print image display, transfers it by the capacity equivalent to the display picture corresponding to the screen scroll instruction to the memory 17 for display at need, and displays and outputs it on the screen. Therefore, the print image display of the next picture in immediately accordance with the screen scroll instruction can be performed. In such a way, it is possible to shorten the time until the next print image is displayed actually.</p> |
