| 摘要 |
Provided is an image synthesizing device with which a specific display region P of a sub-image is synthesized and displayed within a specific display region Q of a main image displayed on a display 9, wherein this image synthesizing device comprises a frame memory with which the data in the synthesis and display region P out of the sub-image data is continuously stored in the order of input, after which the stored sub-image data is read out when the scanning address of the main image data is an address corresponding to the display region Q, and a selector 4 with which the main image data displayed on the display 9 and the sub-image data continuously and sequentially read out from the frame memory are inputted, and when the scanning address of the main image data is an address corresponding to the display region Q, the selected channel is switched from main image data to the sub-image data and outputted to the display 9 where this sub-image data is displayed, which allows the capacity of the frame memory used for image synthesis to be smaller, and allows the sub-image to be reduced or magnified at the desired scale factor.
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