Boots – shoes – and leggings
Patent
1991-04-11
1994-01-04
Trans, Vincent N.
Boots, shoes, and leggings
364449, 340988, G06F 1550
Patent
active
052766268
ABSTRACT:
The direction finding apparatus provided in the vehicle (10) computes average data and variance data from output data of the terrestrial magnetism sensor (1) in straight moving, and determines reliability of the detected output data of the terrestrial magnetism sensor (1). The error due to the magnetization of the vehicle (10) is corrected by computing the examined data on each of plural center candidates and selecting a center candidate as a new center coordinate of the present output circle of the terrestrial magnetism. Then, the magnetization of the vehicle (10) is inferred from the new center coordinate, thereby to infer a precise terrestrial magnetism direction.
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Abstract of U.S. Pat. No. 4,862,398, patented Aug. 29, 1989.
Ihara Yasuhiro
Yamashita Mitsuhiro
Matsushita Electric - Industrial Co., Ltd.
Trans Vincent N.
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