| 摘要 |
PROBLEM TO BE SOLVED: To provide a system to physically and certainly attach a second device with a first device. SOLUTION: This system has a first and a second inter-connection attachment means physically related to each other. The second inter-connection attachment means is physically engaged with the corresponding first inter-connection attachment means. Additionally a means to detect that each of the first and second inter-connection attachment means is physically connected to each other is provided. It is favorable that this detection means related to at least one of the devices and communicates with each of the inter-connection attachment means of the related devices. Furthermore, a means to detect a situation that the first and second inter-connection attachment means are certainly combined with each other is provided. In the case that it is not provided, a means to show a state where certain combination is formed between these devices is provided. In the case that the attachment there between is not secured, an additional command is received from an end-user by stopping at least one of the devices by using a controller. COPYRIGHT: (C)2003,JPO
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