| 摘要 |
PROBLEM TO BE SOLVED: To constitute a logic constitution-type data transmission system which can transmit data in a plurality of data systems through a plurality of channels and to provide an electronic unit which can improve the operability of the system and to provide a channel control method in the data transmission system. SOLUTION: When transmission right in the default channel of a transmitted protocol (data system) is requested to a channel manager and the transmission right is acquired, data is transmitted through the default channel when the transmission right is obtained (S2-S8). When the transmission right of the default channel cannot be secured, an alternate channel is secured and a node obtaining the transmission right of the default channel is specified (S11-S17). Then, alternate channel information is transmitted to the specified node (S18). The node obtaining the transmission right of the default channel transfers received alternate channel information to the default channel (S10). |
