| 摘要 |
PURPOSE:To shorten the time required for classification, by inputting the classifying information added to real information to an address of a memory, and executing the classification by its output, in a method for classifying whether the real information on a system bus is necessary to the own station or not. CONSTITUTION:In each of plural stations coupled by a system bus, all information frames on the bus are inputted, and this classifying information is inputted to an address of the first and the second classifying memories 1, 2, respectively. When this real information is necessary information to its own station, the first and the second processing informations of each real information are outputted from the memories 1, 2, a necessary deciding signal is outputted by a discriminating circuit 3, and the first and the second processing informations are added to the real information and are transferred to a terminal of its own station. On the other hand, in case of unnecessary information, specified information is outputted from the memory, an unnecessity deciding signal is outputted from the discriminating circuit 3, and receiving information is eliminated. Accordingly, whether the real information is necessary or not can be classified quickly. |
