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. 25, 2009
Filed:
Nov. 17, 2003
Ji-young Moon, Suwon-si, KR;
Ji-young Moon, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-Si, KR;
Abstract
A moving image watermarking method, which forms a global masking map by combining frequency masking, spatial masking and motion masking values together and inserts a watermark according to the formed global masking map through the use of a human visual system is provided. In the moving image watermarking method, a watermark value is obtained by exclusive-ORing a random key value and a binary value of a logo image. A plurality of masking operations are separately performed. A global masking value is obtained through the separate masking operations. A watermarked frame value is obtained by adding a watermark value weighted by the global masking value and a control variable to an original frame value.