| 摘要 |
PURPOSE:To share a bit of information in a disk with an easy procedure, by reading all of the information required for a slave device repeatedly from the disk, transmitting them to a transmission line, and reading only required information by the slave device. CONSTITUTION:A master device 1 is connected to a disk device 2, and it incorporates a transmission control circuit 3, and is connected to the transmission line 4. Plural slave devices 5 are connected to the transmission line 4, and each of the slave devices is provided with a reception circuit 6, a buffer 7, an OS(operating system program)8, and an application program (AP)9. The master device 1 reads out all of the areas of a file required for the slave device 5 from the disk device 2 repeatedly, and sends it to the transmission line 4 via the transmission control circuit 3. In the slave device 5, when a disk read request is issued from the AP9, the OS8 issues the read request to the reception control circuit 6. The reception control circuit 6 monitors the transmission line, and fetches corresponding information when it is transmitted.
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