| 摘要 |
<p>PROBLEM TO BE SOLVED: To transmit a frame communicated between terminals in a lower network and according to a communication protocol for the lower network, without changing a content of the frame by using a frame according to an asynchronous communication protocol for a higher network.SOLUTION: Opening of a higher network 3 is defined by using an ID of a data frame of a CAN in the case that the higher network 3 is a CAN using an asynchronous communication protocol. Respective nodes 41, 42, 51, 52, 54, 55 in lower networks 5a, 5b are notified of opening and closing of the higher network 3 by using IDs of headers of LINs in the lower networks 5a, 5b using a synchronous communication protocol. Thereby, the respective nodes 41, 42, 51, 52, 54, 55 in the respective lower networks 5a, 5b are made to recognize an open period (predetermined period) of the higher network 3.</p> |
