| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an in-vehicle electronic control device into which noise hardly intrudes from a line between ECUs, whose manufacturing cost can be reduced, and which can stably transmit and receive data even in communication with other ECUs. <P>SOLUTION: A first micro computer 2a and a plurality of second micro computers 3a to 6a are mounted on the same in-vehicle electronic control device 1. The first micro computer 2a has a storage means 2d which stores data to be transmitted before transmission when performing data transmission to external devices 7 to 9 by means of an external communication means and erases the stored data after transmission. The second micro computers 3a to 6a execute data transmission to the external devices 7 to 9 via the first micro computer 2a by means of a second communication means in accordance with the number NDAT of the data stored on the storage means 2d, which are transmitted by the first communication means, or the number of data which can be additionally stored. <P>COPYRIGHT: (C)2013,JPO&INPIT |
