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Computer system linked by using information in data objects    
United States Patent6122403   
Link to this pagehttp://www.wikipatents.com/6122403.html
Inventor(s)Rhoads; Geoffrey B. (West Linn, OR)
AbstractVarious improvements to steganographic systems, and applications therefore, are disclosed. The improvements include facilitating scale and rotation registration for steganographic decoding by use of rotationally symmetric steganographically embedded patterns and subliminal digital graticules; improved techniques for decoding without access to unencoded originals; improving robustness of steganographic coding in motion pictures and/or in the presence of lossy compression/decompression; and representing data by patterned bit cells whose energy in the spatial domain facilitates decoding registration. Applications include enhanced-security financial transactions, counterfeit resistant identification cards, fraud deterrent systems for cellular telephony, covert modem channels in video transmissions, photo duplication kiosks with automatic copyright detection, and hotlinked image objects (e.g. with embedded URLs) for use on the internet.
   














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Patent Text Patent PDF Print Page Summary File History
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Inventor     Rhoads; Geoffrey B. (West Linn, OR)
Owner/Assignee     Digimarc Corporation (Tualatin, OR)
Patent assignment
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Publication Date     September 19, 2000
Application Number     08/746,613
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     November 12, 1996
US Classification     382/233
Int'l Classification    
Examiner     Couso; Jose L.
Assistant Examiner    
Attorney/Law Firm     Galbi; Elmer
Address
Parent Case     The present application is a Continuation in Part of: 1) U.S. application Ser. No. 08/649,419 filed May 16, 1996 (now U.S. Pat. No. 5,862,260) 2) U.S. application Ser. No. 08/508,083 filed Jul. 27, 1995 (now U.S. Pat. No. 5,841,978) 3) PCT application Serial No. PCT/US96/06618 filed May 7, 1996, The present application is related to: 1) application Ser. No. 08/637,531 filed Apr. 25, 1996 (now U.S. Pat. No. 5,822,436) 2) application Ser. No. 08/614,521 filed Mar. 15, 1996 (now U.S. Pat. No. 5,745,604) 3) application Ser. No. 08/534,005 filed Sep. 25, 1995 (now U.S. Pat. No. 5,832,119) 4) application Ser. No. 08/512,993 filed Aug. 9, 1995 (now abandoned) 5) application Ser. No. 08/508,083 filed Jul. 27, 1995 (now U.S. Pat. No. 5,841,978) 6) application Ser. No. 08/436,098 filed May 8, 1995 (now U.S. Pat. No. 5,636,292) 7) application Ser. No. 08/436,099 filed May 8, 1995 (now U.S. Pat. No. 6,710,834) 8) application Ser. No. 08/436,102 filed May 8, 1995 (now U.S. Pat. No. 5,748,783) 9) application Ser. No. 08/436,134 filed May 8, 1995 (now U.S. Pat. No. 5,748,763) 10) application Ser. No. 08/438,159 filed May 8, 1995 (now U.S. Pat. No. 5,850,481) 11) application PCT/US94/13366 filed Nov. 16, 1994, 12) application Ser. No. 08/327,426 filed Oct. 21, 1994 (now U.S. Pat. No. 5,768,426) 13) application Ser. No. 08/215,289 filed Mar. 17, 1994 (which is now abandoned) 14) application Ser. No. 08/154,866 filed Nov. 18, 1993 (which is now abandoned)
Priority Data    
USPTO Field of Search     358/85 358/86 358/400 358/402 358/403 358/407 358/442 379/94 379/95 379/96 379/97 379/98 379/100 379/94 379/95 379/96 379/97 379/98 379/118 379/127 379/105 380/3 380/4 380/5 380/9 380/16 380/22 380/23 380/25 380/49 380/50 380/54 382/100 382/112 382/115 382/232 382/233 382/236 382/244 382/248 382/254 382/280 382/287
Patent Tags     computer linked information data objects
   
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