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:
Dec. 20, 2011
Filed:
Jun. 20, 2008
Jun-tao Gao, Shanghai, CN;
Jun-Tao Gao, Shanghai, CN;
Mitac Research (Shanghai) Ltd., Zha Bei District, Shanghai, CN;
Abstract
This invention discloses a navigation apparatus correcting position data according to a map matching position and a method thereof. The navigation apparatus includes a satellite positioning module, an electronic map database, a map matching module and a correction module. The satellite positioning module provides a plurality of position data. The electronic map database stores at least one map data. The map matching module matches a position data with a map data to generate a map matching position corresponding to the position data. The correction module provides at least one turning point, and each turning point is situated at the map matching position to form an turning angular. If the turning angular exceeds a threshold value, the correction module calculates a position data and a map matching position statically collected within a predetermined time according to an algorithm to generate an offset to correct the position data behind the turning point.