Title:
CAR NAVIGATION DEVICE
Document Type and Number:
Japanese Patent JP2002168646
Kind Code:
A
Abstract:
To provide a method for improving safety, by talking to a driver in a car navigation system device for guiding a path.
In a condition where a driving path is along a road, a call is made to the driver at an appropriate time interval of 1/f fluctuation or the like, when the car navigation decides that it will not perform guidance for a fixed time interval by calculation, thus preventing the driver from getting bored.
Inventors:
YASUKAWA DAISUKE
KAWAMURA TOSHIMASA
OKAWA AKIHIRO
KAWAMURA TOSHIMASA
OKAWA AKIHIRO
Application Number:
JP2000365766A
Publication Date:
June 14, 2002
Filing Date:
November 28, 2000
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G01C21/00; G08G1/0969; G10L15/00; G10L15/22; G10L15/28; (IPC1-7): G01C21/00; G08G1/0969; G10L15/00; G10L15/28; G10L15/22
Attorney, Agent or Firm:
Sakuta Yasuo