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:
Dec. 02, 2003

Filed:

Nov. 14, 2001
Applicant:
Inventors:

Yuichi Abe, Tottori, JP;

Tomoyuki Yoshimura, Tottori, JP;

Susumu Iida, Tottori, JP;

Akiyoshi Yamamoto, Tottori, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01C 2/130 ; G01C 2/126 ;
U.S. Cl.
CPC ...
G01C 2/130 ; G01C 2/126 ;
Abstract

The present invention is directed to a navigation apparatus capable of performing a proper voice guidance even in such a case that signals transmitted from GPS satellites cannot be received, but a current location cannot be judged. The navigation apparatus of the present invention is featured by such a navigation apparatus in which signals transmitted from GPS satellites are received so as to measure a current location, the measured current location is displayed on a screen in connection with a map, a guidance route up to a destination place is set, and a guidance is notified every predetermined guidance point. In this navigation apparatus, when the signals transmitted from the GPS satellites cannot be received, if a current location is located on the guidance route, then a virtual current location is displayed in such a manner that the virtual current location is moved on the guidance route at a predetermined speed, and a guidance is notified every predetermined guidance point.


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