| 摘要 |
PURPOSE:To attain a function-based file copy system suited to a decentralized system by selecting a function module of the copy side equal to a function module among the function modules forming the entire decentralized system. CONSTITUTION:The function modules are classified into three types A, B and C. An A function module of a CPU7 transmits en bloc the copy request annoucement of the A function. This annoucement is received by CPU6, 8 and 10 of other modules of the same function A. Thus the unique CPU numbers allocated to own CPU are transmitted en bloc in reply together with the request reception announcement. In case the CPU8 is selected as the one at the copy side, the start request of the A function module is shunted and preserved until the copy is over. Furthermore, the file contens controlled by a module itself are sent en bloc after conversion into a fixed transmission format. At the side to be copied, the copy file data is received for file recovery. When the copy is over, the A function module executes the start request processing for the shunted A function module and is reset to a steady state. |
