Image synthesis output apparatus, image synthesis display apparatus, portable communication equipment, image synthesis output method, and program product

摘要

An image synthesis output apparatus is provided which is capable of saving a power consumption in the stage of obtaining a synthetic image of a plurality of images. In this image synthesis output apparatus, during an ordinary period when either of first and second input images which are stored in an input-image storage section is updated within a first predetermined period, a multi-layer image synthesis section synthesizes these input images and outputs a synthetic image to an LCD display panel. If neither of the first and second input images are updated within the first predetermined period, the multi-layer image synthesis section not only outputs the synthetic image but also writes it in a synthetic-image storage section. If the first and second input images are not updated and a second predetermined period elapses after the first predetermined period, then without synthesizing the first and second input images, the multi-layer image synthesis section reads the synthetic image which is stored in the synthetic-image storage section and outputs it to the LCD display panel.