| 摘要 |
PURPOSE:To reduce the time required for processing the enlargement or the reduction of an image by reducing the number of times of use of bit blt function in an image processor. CONSTITUTION:In a row in which plural lines of rows of a transfer destination (b) coincide with plural lines of the rows of a transfer origin (a) corresponding to that continuously, plural rows (I(j), I(j+1), I(j+2)) of the transfer origin (a) continuously coincide with a transfer area specified register are set, and start of bit blt is made enable for a bit blt start register, and plural rows of the continuously coinciding transfer origin (a) corresponding to that are copied on plural rows (j, j+1, j+2) of the continuously coinciding transfer destination (b) collectively. |
