| 摘要 |
PROBLEM TO BE SOLVED: To provide a digital camera the recycle of which can be systemized and which can be purchased with ease at a low price. SOLUTION: A digital camera 1 photographs videos by means of a solid-state image pickup element 4 and records video signals from the element 4 in a semiconductor memory after digitizing and enciphering the video signals by means of a video processing section 5. However, the camera 1 itself has no function of reading out the enciphered digital video signals from the memory 6 and decoding the signals. A photographer carries the camera 1 in a shop after photographing. The shop decodes the enciphered video signals by reading out the signals from the memory 6 of the camera 1 by using a device provided in the shop, writes the decoded digital video signals on an external recording medium, such as the magnetic disk, flash memory card and hands over the medium to the photographer. In addition, the shop sells the camera 1 to a selling shop after erasing the data in the memory 6 and charging a battery 7.
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