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:
Feb. 19, 2013

Filed:

Apr. 28, 2009
Applicants:

Ikue Kawashima, Kanagawa, JP;

Soichi Nagamatsu, Kanagawa, JP;

Inventors:

Ikue Kawashima, Kanagawa, JP;

Soichi Nagamatsu, Kanagawa, JP;

Assignee:

Ricoh Company, Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G08B 29/04 (2006.01); G06F 7/04 (2006.01); G09G 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A disclosed image display device includes a display part; a user identifying part configured to perform personal identification to identify personal identification information; a detecting part configured to detect whether the image display device is held by hand; and a control part configured to display an image on the display part upon a display request when the user identifying part identifies personal identification information obtained upon the display request as personal identification information of an authorized user, to continue displaying the image on the display part as long as the detecting part detects that the image display device is held by hand, and to erase the image on the display part when the user identifying part fails to identify the personal identification information of the authorized user by a personal identification performed upon detecting by the detecting part that the image display device is not held by hand.


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