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:
Aug. 20, 2013
Filed:
May. 13, 2010
Masaki Ishii, Kanagawa, JP;
Masaki Ishii, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Tools are provided for (i) obtaining image data in which information is embedded by printing multiple types of patterns in a matrix, (ii) calculating multiple vertical-line-segment sequences and multiple horizontal-line-segment sequences, obtained by connecting vertically arranged patterns and horizontally arranged patterns, respectively, in the image data with polygonal lines, (iii) searching for a vertical line segment and a horizontal line segment intersecting with each other for each combination of one of the vertical-line-segment sequences and one of the horizontal-line-segment sequences, (iv) calculating an intersection point between the thus-found vertical line segment and the horizontal line segment as a position of a pattern, and (v) extracting the information embedded in the printed material by identifying types of patterns at the calculated intersection points.