Patent ID: 7783071

Claim:
A digital camera, comprising: an image data generating unit that generates image data; a verification data generating unit that generates first verification data used to detect whether the image data is changed; a first slot in which a recording medium is inserted; a second slot in which an image verification apparatus is inserted; a first interface unit that stores a first image file in the recording medium inserted in the first slot, wherein the first image file includes the image data and the first verification data; and a second interface unit that transfers the first image file to the image verification apparatus inserted in the second slot, wherein the image verification apparatus inserted in the second slot is capable of detecting, using the image data and the first verification data, whether the image data is changed, wherein the image verification apparatus inserted in the second slot (a) generates second verification data used to detect whether the image data is changed if the image verification apparatus inserted in the second slot detects that the image data is not changed, (b) generates a second image file including the image data and the second verification data, and (c) transfers the second image file to only the digital camera after the image verification apparatus inserted in the second slot generates the second image file, wherein the second interface unit receives the second image file transferred from the image verification apparatus inserted in the second slot, and the first interface unit stores the second image file received by the second interface unit in the recording medium inserted in the first slot.