| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a drive recorder capable of performing proper trigger determination without depending on a road surface state. <P>SOLUTION: A drive recorder includes a trigger determination circuit in which, as for acceleration data of a vehicle, an average value of first and second movements in temporally different two systems is calculated and trigger signals are generated according to a comparison result between these differential values or absolute differential values and a predetermined threshold value.The average value of the first and the second movements may be calculated with time zones adjacent to each other as an arithmetic object while including overlapped acceleration data. <P>COPYRIGHT: (C)2012,JPO&INPIT |
