Patent ID: 6810329
Filing Date: 2004-10-26
Classification: G01C,G08G

Abstract:
A navigation guide device comprising:current position acquisition section for acquiring information regarding the current position of a mobile body; target point acquisition section for acquiring information regarding a target point the mobile body wants to reach; information storing section for storing information regarding the current position and target point; communication state monitoring section which monitors signal transmission state under which transmission of a signal notifying the current position and target point to a path determining section will occur so that the path determining section can determine an appropriate path connecting the current position with the target point, as well as signal reception state under which reception of a signal notifying the appropriate path determined by the path determining section will occur; guide information presenting section for presenting guide information based on the received information about the appropriate path; and communication control section which, if the communication state monitoring section finds communication is impossible, instructs the information storing section to store information regarding the current position and target point until communication becomes possible and transmission of the information regarding the current position and target point is completed.