US Patent 7423675 Electronic camera and data file generating apparatus

Image data outputted from an image-capturing device 14 is divided to generate a plurality of image data files that are separately reproducible. Using divisional image data included in each of the plurality of image data files, the image data before division is restored. When a color image is to be divided on a pixel-by-pixel basis, data for red, data for green and data for blue are respectively included in the image data of each pixel. When a color image is to be divided on an RGB basis, an image data file for red, a image data file for green and a image data file for blue are created.