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:
Dec. 31, 2013
Filed:
Nov. 22, 2011
Susumu Yamamoto, Yokosuka, JP;
Takao Nakamura, Yokosuka, JP;
Susumu Yamamoto, Yokosuka, JP;
Takao Nakamura, Yokosuka, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A digital watermark embedding apparatus for embedding embedding information into an input signal having dimensions equal to or greater than N(N is an integer equal to or greater than 2). The apparatus generates an embedding sequence based on the embedding information, generates an N−1-dimensional pattern based on the embedding sequence, generates an N-dimensional embedding pattern by modulating a periodic signal according to a value on the N−1-dimensional pattern, and superimposes the embedding pattern in the input signal and outputs it. A digital watermark detection apparatus measures a component of a predetermined periodic signal in a direction of a dimension of the input signal to obtain an N−1-dimensional pattern, obtains a detection sequence from values of the N−1 dimensional pattern, and detects the embedded digital watermark based on a size of correlation value between the detection sequence and an embedding sequence.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile