| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an on-board device communication system capable of avoiding a trouble due to missing data while reducing a communication load in an in-vehicle communication line by reducing the amount of data transmitted and received through the in-vehicle communication line, and by reducing an rate of missing data caused by an error in transmission and reception. <P>SOLUTION: When the CPU of a distribution device detects the reception of a data signal (S21:YES), the CPU reads a value of information indicated by the data signal (S22), and determines whether a value changes (S23). When the value changes (S23:YES), transmission information, which indicates that transmission is performed only when the value changes, is added (S25), the number of times for transmission is set (S28), and transmission is a performed a plurality of times according to the set number of times for transmission (S29). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
