| 摘要 |
<P>PROBLEM TO BE SOLVED: To immediately determine a coefficient used for calculating a car speed or a traveling distance from a car speed pulse output from a car speed sensor even in a bad radio wave reception state of a vehicle. <P>SOLUTION: The on-vehicle signal processing device includes an information processing unit 110 for calculating a car speed or a traveling distance based on a car speed pulse signal, a nonvolatile storage unit 120 for storing information about a speed pulse coefficient indicating characteristics of the pulse signal, an odometer numerical value input unit 113 for receiving the input of an odometer numerical value indicated by an odometer mounted on the vehicle, and a speed pulse coefficient correction unit 110 for calculating a first traveling distance indicating a difference between two odometer values input at two different points, calculating a second traveling distance based on the car speed pulse signal and the speed pulse coefficient input regarding movement between the two different points, and correcting the speed pulse coefficient based on the first traveling distance and the second traveling distance. <P>COPYRIGHT: (C)2013,JPO&INPIT |
