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:
Sep. 16, 2014
Filed:
Sep. 13, 2011
Jun Takahashi, Kawasaki, JP;
Shohei Nakagata, Kawasaki, JP;
Kensuke Kuraki, Kawasaki, JP;
Taizo Anan, Kawasaki, JP;
Jun Takahashi, Kawasaki, JP;
Shohei Nakagata, Kawasaki, JP;
Kensuke Kuraki, Kawasaki, JP;
Taizo Anan, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
When creating a marker, an encryption apparatus extracts each pixel value in a region and allows a storing unit to save, as restoration information, the high-order bits of each extracted pixel value. Then, the encryption apparatus creates a marker by changing the high-order bits of the pixel value in a region in which the marker is created and embeds encrypted information in an encrypted region specified by the marker. When decoding the encrypted information, a decoding apparatus detects the marker from a digital image, decodes the encrypted information in the encrypted region specified by the marker, and overwrites bits contained in the restoration information with the high-order bits of the pixel value of the marker.