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:
Oct. 11, 2005

Filed:

Aug. 28, 2002
Applicants:

Koji Ihara, Chiba, JP;

Atsushi Kuribayashi, Kanagawa, JP;

Tatsuya Yamamoto, Chiba, JP;

Hitomi Sahara, Tokyo, JP;

Takeshi Tsukada, Kanagawa, JP;

Yoshinori Watanabe, Aichi, JP;

Inventors:

Koji Ihara, Chiba, JP;

Atsushi Kuribayashi, Kanagawa, JP;

Tatsuya Yamamoto, Chiba, JP;

Hitomi Sahara, Tokyo, JP;

Takeshi Tsukada, Kanagawa, JP;

Yoshinori Watanabe, Aichi, JP;

Assignees:

Sony Corporation, Tokyo, JP;

Denso Corporation, Aichi, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01C021/00 ;
U.S. Cl.
CPC ...
Abstract

A navigation device simultaneously displays two screens of maps on a common display unit and includes a map data storage unit for storing map data and a resolution conversion unit for converting the resolution of the map data acquired from the map data storage unit. The display unit has a predetermined display area for displaying a map based on the map data with its resolution having been converted.


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