| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide techniques for performing diagnosis without causing an excessive processing load on a processor. <P>SOLUTION: A navigation device comprises: a processor for executing at least one navigation function; period estimation means for estimating a low processing load period in which a maximum processing load of the processor during travel of a vehicle becomes lower than a predetermined reference; and diagnosis means for performing diagnosis of the navigation function according to the low processing load period. <P>COPYRIGHT: (C)2012,JPO&INPIT |
