| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem of illegitimate accesses caused by the contrivance of free of re-authentication and the recovery and resale in a recyclable digital camera system compatible with the Bluetooth (BT) of prior arts. SOLUTION: In a configuration comprising a digital camera (DC), the Bluetooth (BT), and a mobile phone (T), the DC and the T authenticate each other, the DC and the T register a device address of the DC and the T to their own registration device information lists respectively, when a prescribed date and time elapses from start of the authentication, the DC requests the T to delete the device address of the DC from the registration device information list of the T, the T deletes the device address of the DC from the registration device information list of the T in response to the delete request from the DC, or in this case, the T may inquire of the DC about the model and the type of the DC and confirm that the DC is a recyclable camera. Otherwise the DC makes a delete request to the T when a prescribed date and time elapses after final photographing. Also the T may judge that a prescribed date and time elapses after the start of the authentication. COPYRIGHT: (C)2006,JPO&NCIPI |
