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. 11, 1995
Filed:
Nov. 30, 1993
Hirofumi Goto, Hyogo, JP;
Kazuhiro Yokouchi, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A vehicle-carried navigation system wherein a current position is judged rapidly even when setting or extensive correction of a current position is executed and displaying of a map is updated rapidly in a current position displaying mode even when a vehicle moves at a high speed and a map around a current position is displayed rapidly even when the display mode is changed over from a map displaying mode to a current position displaying mode. When one of a current position detecting apparatus and a picture drawing apparatus tries to read out map data from a map data storage apparatus, a judging device judges whether or not such map data have been read into and are held in the other apparatus, and if such map data are already held in the other apparatus, then the map data are not read out from the map data storage apparatus but are transferred from the other apparatus to the one apparatus by map data transfer device.