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Inventors

Kenneth L. Levy Jun Tian

Assignee

DIGIMARC CORPORATION (AN OREGON CORPORATION)

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DIGIMARC CORPORATION, Assignor DMRC LLC, Assignor DMRC CORPORATION, Assignor DIGIMARC CORPORATION, Assignor DIGIMARC CORPORATION (FORMERLY DMRC CORPORATION), Assignor

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AUTHENTICATING MEDIA SIGNALS BY ADJUSTING FREQUENCY CHARACTERISTICS TO REFERENCE VALUES

09/731,456 | U.S. Patent Application

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Location ELECTRONIC

Filed Dec. 6, 2000

Examiner PIOTR POLTORAK

Class 713

Art Group 2134

Patent No. 7,346,776

Case Type Utility - 713/176000

Status Patented Case

Parent 60/232,163 Expired

Child 09/951,143 Patented

Child 12/50,820 Abandoned

Child PCT/US01/28523 Published

Child 12/692,470 Patented

Last Updated: 4 years, 5 months ago

Date	#	Transaction
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AUTHENTICATING MEDIA SIGNALS BY ADJUSTING FREQUENCY CHARACTERISTICS TO REFERENCE VALUES

09/731,456 | U.S. Patent Application

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