Source: http://www.google.com/patents/US6512837?dq=6,202,008
Timestamp: 2017-02-22 15:57:06
Document Index: 289488475

Matched Legal Cases: ['application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 60', 'application No. 60', 'application No. 60']

Patent US6512837 - Watermarks carrying content dependent signal metrics for detecting and ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsThe invention provides methods and systems for detecting and characterizing alterations of media content, such as images, video and audio signals, using watermark messages to carry signal metrics. By comparing signal metrics extracted from the watermark to signal metrics calculated from a suspect signal,...http://www.google.com/patents/US6512837?utm_source=gb-gplus-sharePatent US6512837 - Watermarks carrying content dependent signal metrics for detecting and characterizing signal alterationAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS6512837 B1Publication typeGrantApplication numberUS 09/689,250Publication dateJan 28, 2003Filing dateOct 11, 2000Priority dateOct 11, 2000Fee statusPaidAlso published asUS6771797, US20030112997, WO2002032031A1Publication number09689250, 689250, US 6512837 B1, US 6512837B1, US-B1-6512837, US6512837 B1, US6512837B1InventorsFarid AhmedOriginal AssigneeDigimarc CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (14), Non-Patent Citations (24), Referenced by (208), Classifications (25), Legal Events (9) External Links: USPTO, USPTO Assignment, EspacenetWatermarks carrying content dependent signal metrics for detecting and characterizing signal alteration
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AgÜberwachungsverfahren für eine Übertragung einer Folge von Bildern sowie zur Durchführung des Verfahrens bestimmte Schaltungen, Programme und Bildverarbeitungsvorrichtung* Cited by examinerClassifications U.S. Classification382/100International ClassificationH04N1/00, G06T1/00, H04N1/32Cooperative ClassificationH04N1/00005, H04N1/00002, G06T2201/0061, H04N1/32144, H04N1/00039, G06T1/0064, H04N1/32229, H04N1/32288, H04N1/00045, H04N1/00037, G06T1/0028European ClassificationH04N1/00A3F, H04N1/32C19B3E, H04N1/00A3E, H04N1/00A1, H04N1/00A3J, H04N1/32C19B6, H04N1/00A, H04N1/32C19, G06T1/00W6G, G06T1/00W2Legal EventsDateCodeEventDescriptionJan 29, 2001ASAssignmentOwner name: DIGIMARC CORPORATION, OREGONFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AHMED, FARID;REEL/FRAME:011486/0776Effective date: 20010117Jun 22, 2006FPAYFee paymentYear of fee payment: 4Nov 5, 2008ASAssignmentOwner name: DIGIMARC CORPORATION (FORMERLY DMRC CORPORATION),Free format text: CONFIRMATION OF 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