Image output device and image output control method

摘要

The present invention provides an image output device which can periodically update display of image data as well as update the display images immediately and with minimum data transfer. A data transfer request control circuit 107 including a frame rate register 108 for deciding a data transfer request issue cycle and a data transfer request issuing unit 109 is provided in a video processing unit 104 of the image output device. When an update flag is set in the frame rate register 108, the data transfer request is issued in the next transfer section, regardless of the periodic transfer cycle, and the image data stored in the frame memory 106 are update.