Title:
METHOD FOR ACQUIRING POSITIONAL INFORMATION
Document Type and Number:
Japanese Patent JP3545688
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for acquiring positional information capable of suppressing a power consumption of a terminal equipment in association with a measurement of a position.
SOLUTION: The method for acquiring positional information periodically repeatedly acquires the positional information by the terminal equipment movably by using a position measuring unit. The method comprises the steps of inferring a moving distance based on a plurality of pieces of the positional information including positional information acquired finally and positional information obtained by measuring in the past at each acquiring time of the positional information, comparing a predetermined moving distance reference value with the inferred moving distance, and automatically updating a time interval for acquiring the positional information based on a comparison result so that the moving distance approaches the moving distance reference value.
Inventors:
Masanori Nagata
Nobuo Kuwagi
Nobuo Kuwagi
Application Number:
JP2000273144A
Publication Date:
July 21, 2004
Filing Date:
September 08, 2000
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
G01C21/00; G01S19/24; G01S19/34; G08G1/005; G08G1/13; H04W64/00; (IPC1-7): G01C21/00; G08G1/005; G08G1/13
Domestic Patent References:
| JP10332414A | ||||
| JP10221426A |
Attorney, Agent or Firm:
Furuya Fumio