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:
Apr. 13, 2010

Filed:

Jul. 11, 2007
Applicants:

Youichi Horii, Mitaka, JP;

Tadaaki Ishikawa, Tsuchiura, JP;

Takeshi Hoshino, Kodaira, JP;

Isshu Nakajima, Fuchu, JP;

Yukinobu Maruyama, Kokubunji, JP;

Inventors:

Youichi Horii, Mitaka, JP;

Tadaaki Ishikawa, Tsuchiura, JP;

Takeshi Hoshino, Kodaira, JP;

Isshu Nakajima, Fuchu, JP;

Yukinobu Maruyama, Kokubunji, JP;

Assignee:

Hitachi, Ltd., Tokyo, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G08B 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

The prior art in this field had a display portion of electronic paper at a part of a shelf and showed a problem that the display portion and the goods were hardly co-related to each other in response to the arrangement of the goods. In view of the foregoing, plural images arranged in response to the number of stages of the shelves to be displayed are irradiated with a light source after each of the images is corrected in correspondence with the optical path length ranging from the light source to the end of each of the shelves, each of the images is guided to the end of each of the shelves by plural reflector members and then the images are displayed at the ends. In addition, each of the images is guided to the end of each of the shelves by plural reflector members and the images are displayed at the ends after plural images (either still images or animations) arranged in response to the number of stages of shelves to be displayed are irradiated by the light source and the optical path lengths ranging from the light source to the end of each of the shelves are set to be substantially the same to each other.


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