NAVIGATION SYSTEM, NAVIGATION DEVICE, NAVIGATION SERVER AND STATE CHANGE NOTIFICATION METHOD

摘要

PPROBLEM TO BE SOLVED: To provide a navigation system, a navigation device, a navigation sever and a state change notification method, capable of notifying a user of a changed content, when information on a facility registered as a frequently used place or a facility retrieved in the past, which is an interest object to the user, is changed for some reason due to closing, relocation, business change, or the like, of the facility. PSOLUTION: An updating date and time of facility information corresponding to a facility ID stored in a storage part is referred to in a period determined beforehand based on the facility ID, and it is determined whether the facility information is updated. When it is determined as being updated, the effect that the facility information of a selected facility is updated is outputted, based on the selected facility update notification that notifies to the effect that the facility information has been updated. PCOPYRIGHT: (C)2011,JPO&INPIT