Encoding and decoding methods in which decryption data is conveyed steganographically within audio or visual content

United States of America Patent

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Jul 27, 2004
Grant Date
Sep 18, 2003
app pub date
Dec 9, 2002
filing date
Oct 21, 1994

priority date (Note)
Expired

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Abstract

A content object is steganographically encoded with plural-bit decryption instruction data. A recipient can decode this decryption data, and apply it to the content.

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Patent Owner	Address
DIGIMARC CORPORATION	9405 SW GEMINI DRIVE BEAVERTON OR 97008

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H04K:SECRET COMMUNICATION; JAMMING OF COMMUNICATION

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Inventor Name	Address	# of filed Patents	Total Citations
Rhoads, Geoffrey B	West Linn, OR	694	76423

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Encoding and decoding methods in which decryption data is conveyed steganographically within audio or visual content

Number of patents in Portfolio can not be more than 2000

United States of America Patent

10318345

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PATENT NO	6768808
APP PUB NO	20030174860A1
SERIAL NO	10318345
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
July 27, 2004	US,6768808,B2 US6768808B2	GRANTED PATENT AS SECOND PUBLICATION
September 18, 2003	US,20030174860,A1 US20030174860A1	FIRST PUBLISHED PATENT APPLICATION

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10318345

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