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.:
Date of Patent:
Mar. 24, 2015
Filed:
Oct. 10, 2011
Sueo Ueno, Shizuoka-ken, JP;
Mitsuru Hatano, Kanagawa-ken, JP;
Katsuya Nagamochi, Tokyo, JP;
Hiroyuki Shiraishi, Shizuoka-ken, JP;
Yusuke Hashizume, Chiba-ken, JP;
Sueo Ueno, Shizuoka-ken, JP;
Mitsuru Hatano, Kanagawa-ken, JP;
Katsuya Nagamochi, Tokyo, JP;
Hiroyuki Shiraishi, Shizuoka-ken, JP;
Yusuke Hashizume, Chiba-ken, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Abstract
According to one embodiment, a document detecting apparatus includes a light-emitting element, a photoelectric conversion element, a light-emission controller and a detection processor. The light-emitting element projects light onto a detection position of a document. The light-emitting element is not used for reading an image of the document. The photoelectric conversion element converts light projected onto the detection position into an electric signal and outputs the electric signal. The light-emission controller changes the light quantity of the light emitted by the light-emitting element during a predetermined interval. The detection processor detects the presence or absence of the document at the detection position of the document based on whether a value of the output electric signal during the predetermined interval changes in correspondence to the change of the light quantity caused by the light-emission controller.