| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve efficiency of communication among plural data processors where there is an unevenness in the amount of transmission by constituting the device so that it is possible to make the amount of message to be able to be transmitted while a token is possessed different with regard to each of the plural data processors connected to a network. SOLUTION: It is constituted so that it is possible to make the amount of message which can be transmitted while the token is possessed different with regard to each of plural data processors connected to a network. For example, in an on-vehicle computer network system, unlike a communication control device of a client ECU, the communication control device 20 of a server ECU temporarily stores plural messages in a transmission buffer 30 and can transmit the predetermined number of messages, for instance, five messages when a token is acquired. A counter 27 is reset by a transmission control part 26 when it acquires the token and, every time the message is transmitted later, it receives a signal from the transmission control part 26 and adds one by one.</p> |
