COMMUNICATION SYSTEM AND RELAY APPARATUS
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Accused Products
Abstract
A trunk line topology network is configured with: ECUs 1, 1, . . . being communication apparatuses transmitting and receiving data; and GW apparatuses 3a, 3b and a distribution apparatus 4 being a specific GW apparatus 4 that are connected to a communication line 5 being a trunk line, for relaying, through the GW apparatuses, data transmitted among the ECUs 1, 1, . . . . The distribution apparatus 4 includes a storage region utilized for a database DB. The data transmitted from the ECUs 1, 1, . . . are relayed by the GW apparatuses 3a, 3b and then aggregated by the distribution apparatus 4. The relayed data are stored once on the database DB. When transmitting data to the ECUs 1, 1, . . . , the distribution apparatus 4 reads out data from the database DB and transmits the data at the adjusted transmission timing. The GW apparatuses 3a, 3b relay the transmitted data.
59 Citations
27 Claims
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1-7. -7. (canceled)
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8. A communication system that transmits data with utilizing a plurality of relay apparatuses each of which is connected to a plurality of communication apparatuses, wherein
each relay apparatus comprises: -
a communication apparatus data communication unit that performs transmission of data with a connected communication apparatus; a relay apparatus data communication unit that performs transmission of data with another relay apparatus; a determination unit that determines whether or not the data received by the relay apparatus data communication unit is for own relay apparatus receiving the data; and a control unit that controls to transmit the data received by the relay apparatus data communication unit toward the connected communication apparatus when the determination unit determines positive, and to discard the data received by the relay apparatus data communication unit when the determination unit determines negative; and one relay apparatus further comprises; a storage unit that stores data received by the communication apparatus data communication unit and relay apparatus data communication unit of said one relay apparatus; and a storage control unit that controls to store on the storage unit the data received by the relay apparatus data communication unit of said one relay apparatus, when the determination unit of said one relay apparatus determines positive. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A relay apparatus that is connected to a plurality of communication apparatuses and performs data communication with the plurality of communication apparatuses and another plural of relay apparatuses, comprising:
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a communication apparatus data communication unit that performs transmission of data with the plurality of communication apparatuses; a relay apparatus data communication unit that performs transmission of data with said another plurality of relay apparatuses; a determination unit that determines whether or not the data received by the relay apparatus data communication unit is for own relay apparatus; a control unit that controls to transmit the data received by the relay apparatus data communication unit toward the connected communication apparatus when the determination unit determines positive, and to discard the data received by the relay apparatus data communication unit when the determination unit determines negative; a storage unit that stores data received by the communication apparatus data communication unit and the relay apparatus data communication unit; and a storage control unit that controls to store on the storage unit the data received by the relay apparatus data communication unit, when the determination unit determines positive. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification