Invention Grant
- Patent Title: Location positioning apparatus, location positioning method, and location positioning program
- Patent Title (中): 位置定位装置,位置定位方法和位置定位程序
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Application No.: US13393756Application Date: 2010-08-24
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Publication No.: US08504076B2Publication Date: 2013-08-06
- Inventor: Makoto Takahashi
- Applicant: Makoto Takahashi
- Applicant Address: JP Chiyoda-ku, Tokyo
- Assignee: NTT DoCoMo, Inc.
- Current Assignee: NTT DoCoMo, Inc.
- Current Assignee Address: JP Chiyoda-ku, Tokyo
- Agency: Crowell & Moring LLP
- Priority: JP2009-202611 20090902
- International Application: PCT/JP2010/005209 WO 20100824
- International Announcement: WO2011/027513 WO 20110310
- Main IPC: H04W24/00
- IPC: H04W24/00 ; G01C21/00 ; G01S19/00

Abstract:
A location positioning apparatus, a location positioning method, and a location positioning program are provided for shortening the wait time necessary for positioning, by changing the timeout period in the positioning measurement according to the accuracy of the general location, when the current location cannot be positioned. A general location error determining unit (22e) determines an error radius of the general location, a timeout period setting unit (22g) sets timeout periods T1 to T3 and Tmax in the positioning measurement, according to the error radius determined by the general location error determining unit (22e). A location positioning process timeout instructing unit (22h) time outs the location positioning process being performed by a location positioning processing unit (22d), when a number of visible satellites S is smaller than a prescribed number at each of the timeout periods T1 to T3, or when the timeout period Tmax elapses.
Public/Granted literature
- US20120165045A1 LOCATION POSITIONING APPARATUS, LOCATION POSITIONING METHOD, AND LOCATION POSITIONING PROGRAM Public/Granted day:2012-06-28
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