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:
May. 09, 2000
Filed:
Jul. 14, 1998
Tomoyasu Harada, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Aichi-Ken, JP;
Abstract
A vehicle-mounted map acquisition apparatus 1 obtains maps A-D of different scales from a information center 30. Map A with a small scale covering a wide area is obtained at a starting point distant from a destination and is used to provide route guidance. As a vehicle approaches the destination, it reaches a map acquisition point where map B with a larger scale is obtained. As the vehicle further approaches the destination, a map with a still larger scale is obtained. Map data with a scale suitable for each place along the way to the destination is obtained. As a large amount of data is not sent at once, sufficient map data can be obtained with a limited communication capability and a small capacity memory.