Location detecting apparatus

Boots – shoes – and leggings

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Details

364454, 364457, 342357, 340988, G06F 1550

Patent

active

053072774

ABSTRACT:
A location detecting apparatus comprising an autonomous location detecting unit mounted in a moving body to calculate a distance traveled by the moving body and an estimated heading of the moving body and to detect an estimated location of the moving body on the basis of the distance traveled and the estimated heading, a receiving unit for detecting a location of the moving body by receiving waves from satellites circling around the Earth in predetermined orbits and for providing location information corresponding to the detected location, a unit to detect a difference of location between the location detected by the receiving unit and the estimated location, a location correcting unit which corrects the estimated location to the location detected by the receiving unit when the difference of location is more than a first predetermined value, a magnetic sensor for detecting an heading of the moving body by sensing a geomagnetic field, and a heading correcting unit which corrects the estimated heading to the heading detected by the magnetic sensor, when the difference of location is more than the first predetermined value after the estimated location was corrected and before the moving body travels a predetermined distance.

REFERENCES:
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patent: 5067083 (1991-11-01), Nakayama et al.
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patent: 5220509 (1993-06-01), Takemura et al.
Patent Abstracts of Japan, vol. 13, No. 358 (P-916) Aug. 10, 1989, & JP-A-11 19 711 (Sony) May 11, 1989.
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Patent Abstracts of Japan, vol. 12, No. 359 (P-762) Sep. 27, 1988 & JP-A-63 109 313 (Pioneer) May 14, 1988.
Patent Abstracts of Japan, vol. 16, No. 131 (P-1332) Apr. 3, 1992 & JP-A-32 93 518 (Clarion) Dec. 25, 1991.

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