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.

Date of Patent:
Nov. 20, 2007

Filed:

Jul. 15, 2004
Applicants:

Yusuke Funayose, Saitama, JP;

Kunihiko Fukui, Saitama, JP;

Inventors:

Yusuke Funayose, Saitama, JP;

Kunihiko Fukui, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 21/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

To provide a vehicle navigation system that can accurately display a position of a vehicle that has the navigation system mounted thereon and a target direction even when the vehicle is stopped or traveling at low speed. The vehicle navigation system includes a device that senses a traveling state of a vehicle, a device that judges whether or not the vehicle is stopped or traveling at a low speed, and a device that smoothes GPS positioning data so that error components contained in the GPS positioning data are canceled out or compensated for when the vehicle is stopped or traveling at a low speed. The navigation system further includes a device that calculates the current position based on the smoothed GPS positioning data. The smoothing device outputs new positioning data, for example, based on current GPS positioning data and previous GPS positioning data.


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