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Patent Searching and Data


Title:
POSITIONING SYSTEM AND TERMINAL
Document Type and Number:
WIPO Patent Application WO/2021/075318
Kind Code:
A1
Abstract:
This positioning system is provided with: a positioning unit which, on the basis of image data captured in a communication terminal and map data stored in a storage unit, estimates global position information of the communication terminal at the time of image capture in the communication terminal; a position derivation unit which continuously acquires local position information that is relative position information of the communication terminal using some point as a reference, and on the basis of the global position information and the local position information, derives position information of the communication terminal; and a determination unit which determines whether or not the reliability of the local position information acquired by the position derivation unit satisfies a predetermined reliability condition. The determination unit outputs an instruction to re-estimate the global position information to the positioning unit if the reliability of the local position information does not satisfy the predetermined reliability condition.

Inventors:
YAMAMOTO TAISHI (JP)
HAYASHI KOUKI (JP)
Application Number:
PCT/JP2020/037877
Publication Date:
April 22, 2021
Filing Date:
October 06, 2020
Export Citation:
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Assignee:
NTT DOCOMO INC (JP)
International Classes:
G09B29/10; G01C21/30; G08G1/09; G08G1/13
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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