Issued Patents All Time
Showing 176–186 of 186 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7515730 | Progressive image quality control using watermarking | John Stach | 2009-04-07 |
| 7389420 | Content authentication and recovery using digital watermarks | — | 2008-06-17 |
| 7346776 | Authenticating media signals by adjusting frequency characteristics to reference values | Kenneth L. Levy | 2008-03-18 |
| 7277468 | Measuring quality of service of broadcast multimedia signals using digital watermark analyses | Kenneth L. Levy, Hugh L. Brunk | 2007-10-02 |
| 7187780 | Image processing methods using reversible watermarking | John Stach, Neil E. Lofgren | 2007-03-06 |
| 7181042 | Digital authentication with digital and analog documents | — | 2007-02-20 |
| 7054461 | Authenticating printed objects using digital watermarks associated with multidimensional quality metrics | Claude Zeller, Donald G. Mackay, William Kilmartin, Robert A. Cordery, William A. Brosseau +2 more | 2006-05-30 |
| 7006662 | Reversible watermarking using expansion, rate control and iterative embedding | Adnan M. Alattar, John Stach | 2006-02-28 |
| 6714683 | Wavelet based feature modulation watermarks and related applications | Stephen K. Decker | 2004-03-30 |
| 6683966 | Watermarking recursive hashes into frequency domain regions | Stephen K. Decker, Hugh L. Brunk | 2004-01-27 |
| 6560286 | Field frame motion design for digital video decoder | Val G. Cook | 2003-05-06 |