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:
Jun. 11, 2002
Filed:
Sep. 01, 1998
Nobuyoshi Miyahara, Kanagawa, JP;
Yoichi Yagasaki, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention relates to an apparatus and a method of processing an image data, a transmission medium, as well as a recording medium. In detail, in an image data processing of processing an image data in which an accompany information is embedded as a watermark, having a memory which stores the patterns of the watermark, setting a phase of a pattern of the watermark being stored in the memory, to a first phase or a second phase, calculating a first evaluation value corresponding to a pattern of the watermark of the first phase, of the image data inputted, and a second evaluation value corresponding to a pattern of the watermark of the second phase, and comparing the first evaluation value, and a value corresponding to the second evaluation value. As a result, it makes possible to read the accompany information more securely.