| 摘要 |
PROBLEM TO BE SOLVED: To provide an image data transfer controller which raises speed of data transfer by controlling DMA request of two pieces of simultaneously output image data with different image size. SOLUTION: A pixel number conversion part 14 enlarges, reduces images by converting the number of pixels to image data to which data conversion and color processing are performed by an image processing part 13 and simultaneously output two kinds of image data including the reduced image. Second and third image transfer parts 15, 16 buffer the pieces of image data simultaneously output from the pixel number conversion part 14 and transmit DREQs to a transfer control part 17 according to a buffering state. The transfer control part 17 controls the DREQs from the second and third image transfer parts 15, 16 to output the DREQs to a DMAC 10. The DMAC 10 transfers the image data buffered by the second and third image transfer parts 15, 16 to an SDRAM based on the DREQs output from the transfer control part 17. COPYRIGHT: (C)2007,JPO&INPIT
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