| 摘要 |
PROBLEM TO BE SOLVED: To provide a technology for updating a plurality of control softwares with more certainty. SOLUTION: A network device has a first and a second control part coupled to each other by a communication channel and is connected to a network by the first control part. The second control part acquires update data information about first update data used in the update of first control software and second update data used in the update of second control software. The second control part determines necessity of the update of the first and second control software, by comparing the update data information acquired, first held data information about the first control software and second held data information about the second control software to one another. The second control part updates the control software that is determined to need update between the first and second control software. COPYRIGHT: (C)2007,JPO&INPIT
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