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:
Jul. 08, 2003
Filed:
Jun. 29, 2001
Masashi Seki, Nagaoka, JP;
Kazuma Kurihara, Nagaoka, JP;
Nippon Seiki Co., Ltd., Niigata, JP;
Abstract
There are included a sensor which outputs pulse signals corresponding to the traveling distances of a vehicle, a vehicle display device which displays, based on the pulse signals, vehicle information including the traveling distance, and a navigation unit which receives the distance data related to the traveling distances, obtained by processing the pulse signals, being outputted from the vehicle display device or the pulse signals at a certain reception period to calculate the present position of the vehicle, and controls the vehicle display device to display road traffic information including the display synthesized with the present position on a map in accordance with map data read from a map information memory medium . If the navigation unit can not receive the distance data or the pulse signals within the reception period, an estimated value of a value to be received this time is obtained from the difference between a value inputted last time and a value inputted last time but one and the navigation unit calculates the present position in accordance with the estimated value.