| 摘要 |
PURPOSE:To improve processing speed by providing a data coupling device having a virtual shared memory on a LAN and reading data necessary for other processor from the virtual shared memory. CONSTITUTION:The data transmitted from a first processor 11 are stored in the virtual shared memory of a first coupling device 21, and the data stored in the virtual shared memory are transmitted through the LAN and a second coupling device 22 to a second processor 12 by a request from the second processor 12. In the same manner, a third processor 13 can receive the data stored in the virtual shared memory of the first coupling device 21. Thus, it is sufficient for the first processor 11 to only transmit the data to be transmitted to the virtual shared memory in the first coupling device 21, and the first processor 11 does not need to designate a processor at a receiving side. Further, the processor at the receiving side can receive the data from the coupling device for the LAN at the side of the first processor 11 by requesting the coupling device for the LAN at the side of the self-processor to transmit the data when the data are necessary. |
