公开(公告)号：EP1364182B1

公开(公告)日：2012-01-18

申请号：EP02706003.7

申请日：2002-01-24

申请人： TeleNav, Inc.

发明人： JIN, Haiping ,  DAI, Donghai ,  CHAO, Yi-Chung ,  MESHENBERG, Ruslan, Adikovich ,  DHANANI, Salman ,  GLEBOV, Alexander, G.

IPC分类号： G01C21/26 ,  G08G1/0968

CPC分类号： G01C21/00 ,  G01C21/20 ,  G01C21/26 ,  G01C21/34 ,  G01C21/3626 ,  G01C21/3679 ,  G06Q10/047 ,  G08G1/096811 ,  G08G1/096838 ,  G08G1/096844 ,  G08G1/096861 ,  G08G1/096872 ,  G08G1/096883 ,  H04W4/02 ,  H04W4/20

摘要： A system and method using wireless carriers (204) for providing navigational information to a user connected in real-time, such as through a wireless telephone (202), PDA, or other device. The system provides navigational information to the user via wireless carriers (204) in the form most useful to the user, such as according to landmarks, or the number of blocks until the next action. The system also provides directions to points of interest along the user's route. Further, the system allows the user to suspend and resume a session. Also, the system varies the sampling rate at which the user's location is examined, to enhance efficiency and convenience.