| 摘要 |
PROBLEM TO BE SOLVED: To relieve a monetary load on a user for contract of a communication channel even when the user has a plurality of digital cameras when the image data recorded in a medium of a digital camera are transmitted to a data storage device and stored therein. SOLUTION: A medium 12 stores image data S photographed by using a digital camera 1. When a free capacity of the medium 12 is lost, the digital camera transmits the image data S via a mobile phone 3 to a photo shop 2 to allow a server 22 to store the image data S. A short-distance network communication technology such as the Bluetooth to wirelessly connect a plurality of digital devices is adopted for communication between the digital camera 1 and the mobile phone 3 so that one channel of the mobile phone 3 is enough for the contract of the communication channel for communication with the photo shop 2. Thus, the monetary load on the user can be relieved.
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