IP Library › Granted Patent US 6,580,809
Granted Patent Utility
US 6,580,809 · App. 10/105,013

Quantization-based data hiding employing calibration and locally adaptive quantization

Inventors: John Stach, Hugh L. Brunk, Ravi K. Sharma
Patented Case View Patent ↗
Granted: Jun 17, 2003 Filed: Mar 22, 2002
Inventors
John Stach
Hugh L. Brunk
Ravi K. Sharma
Assignee (at issue)
Digimarc Corporation

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Quick Facts
Patent No.
US 6,580,809
App. No.
10/105,013
Filed
2002-03-22
Granted
2003-06-17
Kind
B2