| 摘要 |
PROBLEM TO BE SOLVED: To provide an image composition device capable of displaying a synthetic output on an image display device even when asynchronous picture data having respectively different scanning frequency bands are inputted. SOLUTION: The image composition device is provided with a timing detector, a line gate detector, a frame trigger detector, and a composition decision device and constituted so as to synthesize asynchronous picture data having respectively different scanning frequency bands and inputted from an image generator by controlling input/output timing and addresses to/from a memory. |
