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.:

US 7729514 B1

PDF
Full Text
Expired
Date of Patent:
Jun. 01, 2010

Filed:

Jun. 02, 2005
Applicants:

Megumi Itoh, Nara, JP;

Toshiya Takahashi, Soraku-gun, JP;

Shinichirou Ota, Nara, JP;

Aki Miake, Nara, JP;

Takeshi Yamamoto, Soraku-gun, JP;

Keiichiro Sato, Nara, JP;

Inventors:

Megumi Itoh, Nara, JP;

Toshiya Takahashi, Soraku-gun, JP;

Shinichirou Ota, Nara, JP;

Aki Miake, Nara, JP;

Takeshi Yamamoto, Soraku-gun, JP;

Keiichiro Sato, Nara, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06K 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A display section displays a speedometer having a substantially circular shape on an outer circumference of which a speed scale is provided. Then, that point on the outer circumference of the speedometer which indicates a speed at a moment is calculated. Further a speed that is attained at a given time period (e.g. 0.5 second) after the moment if the speed is increased at an acceleration at the moment is calculated. An arc-shaped pointer is displayed, the arc-shaped pointer passing (i) the calculated point of the speed scale, (ii) a middle point between the calculated point of the speed scale and a center of the speedometer, and (iii) the center of the speedometer. With this arrangement, a display device displaying the speedometer allows a driver to easily recognize the speed and an amount of a change therein (i.e. acceleration).


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