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 9413919 B1

PDF
Full Text
Expired
Date of Patent:
Aug. 09, 2016

Filed:

May. 19, 2015
Applicant:

Naoki Asaba, Kanagawa, JP;

Inventor:

Naoki Asaba, Kanagawa, JP;

Assignee:

RICOH COMPANY, LTD., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N 1/04 (2006.01); H04N 1/028 (2006.01); H04N 1/00 (2006.01);
U.S. Cl.
CPC ...
H04N 1/02815 (2013.01); H04N 1/00689 (2013.01);
Abstract

An image reading device includes a white reference member, a generating unit, a representative-value storage unit, a reproducing unit, and a normalizing unit. The white reference member reflects a light emitted from a light source. The generating unit generates pseudo data on the basis of the light reflected by the white reference member with respect to each pixel area. The representative-value storage unit stores therein a representative value of each pixel area of the pseudo data. The reproducing unit reproduces the pseudo data on the basis of the representative values. The normalizing unit normalizes results of photoelectric conversion of at least any of pixels on the basis of the pseudo data, thereby creating a criterion for determining the presence or absence of an original.


Find Patent Forward Citations

Asaba, Naoki. (2016). Image reading device, image forming apparatus, and image reading method (U.S. Patent No. 9413919). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9413919

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