Multi-image display device for navigation apparatus, writes image data read from frame buffer based on transmission start address and transmission bytes, into memory according to mask control signal and priority of image

摘要

The image stored in the predetermined area of a frame buffer (3), is read based on calculated transmission start address and number of transmission bytes. The read image data is written into memory according to generated mask control signal. The reading/writing process of the image data is repeated according to the priority of each image stacked in the buffer. An Independent claim is also included for multi-image display method.