| 摘要 |
<p>PROBLEM TO BE SOLVED: To easily and surely revise a version of a firmware of each network system without the need for a huge work time. SOLUTION: The system is provided with a packet transmission reception section 1 that sends periodically a multiple address packet including information of a firmware of its own network system to a local area network and receives a multiple address packet sent from other network system, a packet analysis section 2 that gives an instruction to transfer file data of the firmware of the network system being a sender only when the received multiple address packet is a newest version of the firmware corresponding to its own network system, and a file transfer control section 5 that receives the file transfer instruction and allows the file data of the firmware of the corresponding network system to be transferred to its own network system.</p> |
