Patent ID: 8275952

Claim:
A data recording device provided for use in an automotive vehicle, the data recording device comprising: one or a plurality of nodes interconnected by a multiplex communication line in an in-vehicle network of the vehicle, each of the one or a plurality of nodes configured to create data items each corresponding to one of one or a plurality of data types unique to each node, each of the one or a plurality of nodes setting each data item to a data frame with an assigned frame ID unique to each data item's corresponding data type, and transmitting the data frames to the multiplex communication line; and a recording unit configured to assort the data items contained in the data frames sent from the multiplex communication line, in accordance with the frame IDs of the data frames, and configured to store the assorted data items in a storage unit of the recording unit, wherein the recording unit copies the data items of all the frame IDs from the storage unit and stores the copied data items of all the frame IDs into a non-transitory recording medium of the recording unit at predetermined intervals, regardless of whether the data items of the frame IDs in the storage unit are updated or not.