| 摘要 |
An image superimposing apparatus for superimposing a plurality of images into one image for display includes an operation circuit (31) for obtaining an image data rejated to a next frame based on an image data related to a present frame and a differential image data of a plurality of images, a memory (20) including first and second banks (21, 22) each having a memory capacity for storing at least one frame of image data, an address generator (25) for generating a display address which is used for making access to the first and second memory banks when reading image data for display, a display controller (23) for storing display image numbers which distinguish the plurality of images in correspondence with regions of each of the first and second banks, and a bank controller (26) for storing bank numbers of the first and second banks in correspondence with the display image numbers to indicate the bank from which the image data is presently being read out for display. The bank controller outputs a bank number in response to the display image number from the display controller, and the display address from the address generator and the bank number of the bank controller designate one of the first and second banks and its region from which the image data is to be read out for display. |
