| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an on-vehicle control unit capable of further improving reliability necessary for rewriting of data while improving flexibility for an acquiring period and a rewriting fulfillment period of rewritten data acquired by radio communication. <P>SOLUTION: In the on-vehicle control unit, a master control unit 140 maintains a VIN code (vehicle discrimination code) of each vehicle and version information of a control program at the time of rewriting of data in electronic control units 110 to 130, and acquires the rewritten data from an external management center for managing by means of radio communication. The acquired data is temporarily stored in a memory 143, and the appropriateness of the stored rewritten data is determined. Consequently, the data in the electronic control units 110 to 130 is rewritten by using rewritten data on a condition that the rewritten data stored in the memory 143 is appropriate. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
