DISTRIBUTION DEVICE, COMMUNICATION SYSTEM, AND COMMUNICATION METHOD

摘要

A distribution device capable of reducing delay in transmission to communication devices due to synchronization among data collected from the communication devices, a communication system including such distribution devices, and a communication method. Distribution devices (1a, 1b, 1c) respectively comprise databases (11a, 11b, 11c) for storing data received from ECUs (4a, 4a, , 4b, 4b, , 4c, 4c, ) and synchronizing the contents thereof, receiving buffers (12a, 12b, 12c), and transmitting buffers (13a, 13b, 13c). The distribution device (1a) continuously and concurrently stores the received data in the receiving buffer (12a), synchronizes the contents of the database (11a) with those of the databases (11b, 11c), and transmits the data from the transmitting buffer (13a). The distribution device periodically copies the data from the receiving buffer (12a) into the database (11a) and from the database (11a) into the transmitting buffer (13a).