Source: http://www.google.com/patents/US7593739?dq=7,321,221
Timestamp: 2016-06-28 16:06:23
Document Index: 531677868

Matched Legal Cases: ['art 12', 'art 18', 'art 20', 'art 12', 'art 12', 'art 18', 'art 20', 'art 12', 'art 18', 'art 12', 'art 20', 'art 12', 'art 20']

Patent US7593739 - Location estimating apparatus and location estimating method - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA location estimating apparatus 10 has an information acquiring part 12, an information storing part 18, and an arithmetic processing part 20. The information acquiring part 12 has a location information acquirer 14 for acquiring location information of a mobile object from information, and an error...http://www.google.com/patents/US7593739?utm_source=gb-gplus-sharePatent US7593739 - Location estimating apparatus and location estimating methodAdvanced Patent SearchPublication numberUS7593739 B2Publication typeGrantApplication numberUS 11/411,881Publication dateSep 22, 2009Filing dateApr 27, 2006Priority dateApr 28, 2005Fee statusPaidAlso published asCN1865855A, CN100543420C, DE602006000614D1, DE602006000614T2, EP1720037A2, EP1720037A3, EP1720037B1, US20060247890Publication number11411881, 411881, US 7593739 B2, US 7593739B2, US-B2-7593739, US7593739 B2, US7593739B2InventorsShin Oguri, Masatoshi KimotoOriginal AssigneeNtt Docomo, Inc.Export CitationBiBTeX, EndNote, RefManPatent Citations (11), Referenced by (7), Classifications (17), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetLocation estimating apparatus and location estimating method
US 7593739 B2Abstract
A location estimating apparatus 10 has an information acquiring part 12, an information storing part 18, and an arithmetic processing part 20. The information acquiring part 12 has a location information acquirer 14 for acquiring location information of a mobile object from information, and an error information acquirer 16 for acquiring error information from information. The information storing part 18 stores the location information and error information sent from the information acquiring part 12, at each measurement time. The arithmetic processing part 20 estimates a location from the location information and error information from the information acquiring part 12. The arithmetic processing part 20 of the location estimating apparatus estimates the location of the mobile object by successively executing a first step of estimating a moving area per unit time of the mobile object, a second step of estimating an existing area at present of the mobile object, and a third step of estimating a location at present of the mobile object. This makes it feasible to provide location estimating means capable of achieving a high matching rate with an actual state, without use of other device information, while effectively utilizing information.
However, the method of discarding the information with low accuracy as described above is poor in efficiency in terms of effective utilization of information, and the method of using the other device information like the acceleration sensor information has the problem of increase of device cost.
FIG. 1 is a diagram showing a configuration of a location estimating apparatus according to the first embodiment of the present invention.
The location estimating apparatus according to embodiments of the present invention will be described below with reference to the accompanying drawings. Constituent elements with the same reference symbols will denote the same constituent elements, and redundant description will be omitted.
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