| 摘要 |
A data transmission system for transmitting data between a plurality of modules. The data transmission system has a data bus for transmitting the data between the modules, a control signal bus for transmitting a request signal for requesting use of the data bus and an allowance signal related to allowing the use of the data bus, and a bus controller for controlling the control signal bus. The bus controller receives the request signal transmitted from the modules through the control signal bus, and transmits the allowance signal with respect to one of the modules in response to the request signal, to the modules through the control signal bus. The allowed module transmits the data through the data bus, and the request and the allowance is performed through the control signal bus while the data is being transmitted.
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