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:
Apr. 05, 2005
Filed:
Dec. 13, 2000
Applicant:
Koichi Nagaki, Tsurugashima, JP;
Inventor:
Koichi Nagaki, Tsurugashima, JP;
Assignee:
Pioneer Corporation, Tokyo-to, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C021/20 ; G08G001/123 ;
U.S. Cl.
CPC ...
Abstract
A first navigation system is provided with: a present position detecting device () for detecting a present position; a plurality of memory devices () each capable of reading out map data which is recorded therein; a navigation controlling device () for controlling a navigation operation in correspondence with the detected present position by using the map data; and a map data reading device () for accessing one of the memory devices, which is selected in accordance with a predetermined condition, and reading out the map data required for the navigation operation therefrom.