Issued Patents All Time
Showing 126–150 of 159 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7986807 | Signal embedding and detection using circular structures in a transform domain of a media signal | John Stach, Hugh L. Brunk | 2011-07-26 |
| 7978875 | Signal processing utilizing host carrier information | Ammon E. Gustafson, Geoffrey B. Rhoads | 2011-07-12 |
| 7958359 | Access control systems | Marc D. Miller, Kenneth L. Levy | 2011-06-07 |
| 7928312 | Inverted keyboard instrument and method of playing the same | — | 2011-04-19 |
| 7778442 | Variable message coding protocols for encoding auxiliary data in media signals | Geoffrey B. Rhoads, Brett A. Bradley | 2010-08-17 |
| 7706570 | Encoding and decoding auxiliary signals | John Stach | 2010-04-27 |
| 7702125 | Watermarking systems and methods | Kenneth L. Levy, Lance Lixin Shen, John Stach | 2010-04-20 |
| 7676060 | Distributed content identification | Trent J. Brundage, Brett T. Hannigan | 2010-03-09 |
| 7657058 | Watermark orientation signals conveying payload data | — | 2010-02-02 |
| 7574014 | Digital watermark detection utilizing host carrier information | Ammon E. Gustafson, Geoffrey B. Rhoads | 2009-08-11 |
| 7502759 | Digital watermarking methods and related toy and game applications | Brett T. Hannigan, Stephen K. Decker, Phillip Andrew Seder, Tony F. Rodriguez, Andrew Evan Klonsky | 2009-03-10 |
| 7502937 | Digital watermarking security systems | Tyler J. McKinley, Matthew Mark Weaver, Tony F. Rodriguez, Marc D. Miller | 2009-03-10 |
| 7489801 | Encoding and decoding signals for digital watermarking | John Stach | 2009-02-10 |
| 7454033 | Quantization-based data hiding employing calibration and locally adaptive quantization | John Stach, Hugh L. Brunk | 2008-11-18 |
| 7412072 | Variable message coding protocols for encoding auxiliary data in media signals | Geoffrey B. Rhoads, Brett A. Bradley | 2008-08-12 |
| 7391881 | Curve fitting for synchronizing readers of hidden auxiliary data | — | 2008-06-24 |
| 7319775 | Wavelet domain watermarks | Adnan M. Alattar, Farid Ahmed, Geoffrey B. Rhoads | 2008-01-15 |
| 7227972 | Progressive watermark decoding on a distributed computing platform | Trent J. Brundage, Brett T. Hannigan | 2007-06-05 |
| 7076082 | Media signal filtering for use in digital watermark reading | — | 2006-07-11 |
| 7046819 | Encoded reference signal for digital watermarks | John Stach | 2006-05-16 |
| 7013021 | Watermark detection utilizing regions with higher probability of success | Ammon E. Gustafson | 2006-03-14 |
| 6988202 | Pre-filteriing to increase watermark signal-to-noise ratio | Geoffrey B. Rhoads, Adnam M. Alattar | 2006-01-17 |
| 6975744 | Detection of multiple watermarks and improved watermark calibration signals | Osama M. Alattar | 2005-12-13 |
| 6898319 | Method and system for video frame enhancement using edge detection | Rajeeb Hazra | 2005-05-24 |
| 6768809 | Digital watermark screening and detection strategies | Geoffrey B. Rhoads | 2004-07-27 |