The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 2010
Filed:
Nov. 09, 2007
Takayuki Watanabe, Fukushima, JP;
Takayuki Watanabe, Fukushima, JP;
Alpine Electronics, Inc., Fukushima, JP;
Abstract
A GPS position-measuring device includes a altitude-information memory for storing altitude information of a moving object, a combination determining unit for determining GPS-satellite combinations from GPS satellites that can be tracked, a position measuring unit for measuring a GPS based or GPS derived three-dimensional position of the moving object for each GPS-satellite combination, and a difference extracting unit for determining a difference in altitude between GPS derived altitude information contained in the measured GPS related three-dimensional position and the altitude information supplied from the altitude-information memory. The GPS position-measuring device further includes a position determining unit for comparing the extracted difference in altitude with a threshold value, selecting a GPS-satellite combination with which the difference in altitude is less than or equal to the threshold value, and determining a measurement position of the moving object based on the GPS derived three-dimensional position of the selected GPS-satellite combination.