| 摘要 |
<P>PROBLEM TO BE SOLVED: To certainly generate a random number different in each electronic device. <P>SOLUTION: In an engine ECU controlling an engine of a vehicle, a microcomputer reads an indefinite value from a register before execution of an initialization process (S330) for writing an initial value into the register inside the microcomputer after a start of operation according to input of power (S310), calculates the random number that is collating data with a smart controller of a driver's own vehicle by use of the read value (S320), stores the random number into an EEPROM of the ECU itself (S360), and makes the smart controller store it (S350). Accordingly, regardless of a vehicle state, the random number different from the smart controller and the engine ECU of another vehicle can be certainly generated and stored. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
