IMAGE SYNTHESIZING DEVICE AND IMAGE SYNTHESIZING METHOD

摘要

An image synthesizing device includes: an a' value calculation unit (1) for calculating a blending coefficient a' according to an OSD image; and a synthesized image generating unit (3) for synthesizing the inputted OSD image with a video image to generate a synthesized image by using a blending coefficient a stored in an a value setting register (2) and the blending coefficient a' calculated by the a'value calculation unit (1).