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Audio steganography    
United States Patent6330335   
Link to this pagehttp://www.wikipatents.com/6330335.html
Inventor(s)Rhoads; Geoffrey B. (West Linn, OR)
AbstractAn identification code signal is hidden in a carrier signal (such as an electronic data signal or a physical medium) in a manner that permits the identification signal later to be discerned. The carrier signal can thereby be identified, or some machine responsive action can thereby be taken. The technique can be applied in video imagery embodiments to control associated video equipment, e.g. to serve as a copy control signal.



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Drawing from US Patent 6330335
Audio steganography - US Patent 6330335 Drawing
Audio steganography
Inventor     Rhoads; Geoffrey B. (West Linn, OR)
Owner/Assignee     Digimarc Corporation (Tualatin, OR)
Patent assignment
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Publication Date     December 11, 2001
Application Number     09/482,752
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     January 13, 2000
US Classification     380/252 380/253 380/254 713/176 713/190
Int'l Classification     H04K 001/02 G06F 011/30
Examiner     Hayes; Gail
Assistant Examiner     Darrow; Justin T.
Attorney/Law Firm     Meyer; Joel R.
Address
Parent Case     RELATED APPLICATION DATA The present application is a division of application Ser. No. 08/951,858, filed Oct. 16, 1997, (now U.S. Pat. No. 6,026,193) which is a continuation of application Ser. No. 08/436,134, filed May 8, 1995 (now U.S. Pat. No. 5,748,763), which is a continuation-in-part of application Ser. No. 08/327,426, filed Oct. 21, 1994 (now U.S. Pat. No. 5,768,426), which is a continuation-in-part of application Ser. No. 08/215,289, filed Mar. 17, 1994, now abandoned, which is a continuation-in-part of application Ser. No. 08/154,866, filed Nov. 18, 1993, now abandoned. The disclosures of these prior applications are incorporated herein by reference.
Priority Data    
USPTO Field of Search     380/34 380/36 380/46 380/252 380/253 380/254 713/176 713/190 700/94 455/2 455/100
Patent Tags     audio steganography
   
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