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Patent US6574350 - Digital watermarking employing both frail and robust watermarks - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsImage, video, or audio data is encoded with both a frail and a robust watermark. The two watermarks respond differently to different forms of processing (e.g., copying the object may render the frail watermark unreadable), permitting an original object to be distinguished from a processed object. Appropriate...http://www.google.com/patents/US6574350?utm_source=gb-gplus-sharePatent US6574350 - Digital watermarking employing both frail and robust watermarksAdvanced Patent SearchPublication numberUS6574350 B1Publication typeGrantApplication numberUS 09/498,223Publication dateJun 3, 2003Filing dateFeb 3, 2000Priority dateMay 8, 1995Fee statusPaidPublication number09498223, 498223, US 6574350 B1, US 6574350B1, US-B1-6574350, US6574350 B1, US6574350B1InventorsGeoffrey B. Rhoads, Ammon E. GustafsonOriginal AssigneeDigimarc CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (102), Non-Patent Citations (70), Referenced by (94), Classifications (82), Legal Events (7) External Links: USPTO, USPTO Assignment, EspacenetDigital watermarking employing both frail and robust watermarksUS 6574350 B1Abstract Image, video, or audio data is encoded with both a frail and a robust watermark. The two watermarks respond differently to different forms of processing (e.g., copying the object may render the frail watermark unreadable), permitting an original object to be distinguished from a processed object. Appropriate action can then taken in response thereto.
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inserting a removable visible watermark in an image and method and apparatus for removing such watermarksWO2009074618A1 *Dec 10, 2008Jun 18, 2009Thomson LicensingMethod and apparatus for inserting a removable visible watermark in an image and method and apparatus for removing such watermarks* Cited by examinerClassifications U.S. Classification382/100, 704/E19.009, 380/51International ClassificationG06Q30/00, G06T7/00, G07C9/00, G07D7/00, B42D15/00, G07F7/12, G06T1/00, B29C45/14, G07F7/08, H04N1/32, G10L19/00, H04N1/00, G11B20/00, G07D7/12Cooperative ClassificationH04N1/32331, G06T1/0071, H04N1/32144, G07F7/12, H04N1/00973, G07D7/20, H04N1/3232, H04N1/32219, H04N2201/3205, B29C45/1418, H04N1/32229, H04N1/00846, G07D7/002, H04N2201/3226, G07F7/08, H04N1/00875, H04N1/32304, H04N2201/3207, G07D7/004, H04N2201/3233, H04N1/32261, H04N1/00037, G11B20/00086, G07C9/00079, H04N1/00092, H04N1/32309, G06T7/0002, G06T2207/30144, H04N2201/327, G10L19/018, B42D15/0013, H04N1/00005, G06Q30/02, H04N2201/3239, G07F7/086, G06T2201/0052, H04N1/00002, H04N2201/3271European ClassificationG07D7/20, H04N1/32C19B7, G07F7/12, G06Q30/02, H04N1/00A1, H04N1/00A3E, H04N1/00W4, H04N1/32C19B3C, H04N1/32C19B3E, H04N1/32C19B3J, H04N1/32C19B6D, H04N1/32C19B9, H04N1/00A5, H04N1/32C19B10, G10L19/018, G07C9/00B6D2, B42D15/00C, H04N1/00P2R2, H04N1/32C19, G07F7/08B, H04N1/00A, G07D7/00D, H04N1/00P3P, G06T1/00W6M, G06T7/00B, G07D7/00B4, G07F7/08Legal EventsDateCodeEventDescriptionNov 22, 2010FPAYFee paymentYear of fee payment: 8Nov 2, 2010ASAssignmentOwner name: DIGIMARC CORPORATION, OREGONFree format text: MERGER;ASSIGNOR:DMRC CORPORATION;REEL/FRAME:025227/0832Effective date: 20080903Owner name: DMRC CORPORATION, OREGONFree format text: MERGER;ASSIGNOR:DMRC LLC;REEL/FRAME:025227/0808Effective date: 20080801Oct 29, 2010ASAssignmentOwner name: DMRC LLC, OREGONFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DIGIMARC CORPORATION (A DELAWARE CORPORATION);REEL/FRAME:025217/0508Effective date: 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