| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a system which can restrict more certainly implement of processing based on a data acquired from outside. <P>SOLUTION: A navigation device specifies the time of date at the receiving based on a receiving signal from GPS while memorizing voice data received by satellite radio broadcasting, and sets up a reproducible time limit of this voice data. Then, this navigation device specifies the time of date at the reproduction (S305) based on the receiving signal from GPS when the memorized voice data is reproduced, and judges whether the reconstruction of the voice data concerned is possible (S320, S335), based on the time of date at the reproduction, the reproducible time limit set up at receiving, and the reproduction time limit specified with the data contained in the voice data. <P>COPYRIGHT: (C)2010,JPO&INPIT |
