Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11223854 | Broadcasting an information signal having special content for triggering an appropriate action in a user device | Alex Dick Terpstra, Martijn Maas | 2022-01-11 |
| 8959202 | Generating statistics of popular content | Gerrit Langelaar, Mehmet Utku Celik, Martijn Maas | 2015-02-17 |
| 8452971 | Embedding and detection of watermark in a motion image signal | Antonius Kalker | 2013-05-28 |
| 7996678 | Embedding and detection of watermark in a motion image signal | Antonius Kalker | 2011-08-09 |
| 7921296 | Generating and matching hashes of multimedia content | Antonius Kalker, Constant Paul Marie Jozef Baggen, Job Cornelis Oostveen | 2011-04-05 |
| 7639599 | Embedding supplementary data in an information signal | Minne Van Der Veen, Antonius Kalker, Alphons Antonius Maria Lambertus Bruekers | 2009-12-29 |
| 7549052 | Generating and matching hashes of multimedia content | Antonius Kalker, Constant Paul Marie Jozef Baggen, Job Cornelis Oostveen | 2009-06-16 |
| 7523312 | Fingerprint database updating method, client and server | Antonius Kalker | 2009-04-21 |
| 7477739 | Efficient storage of fingerprints | Antonius Kalker, Steven Marco Schimmel | 2009-01-13 |
| 7412151 | Detection of a watermark in a compressed video signal | Antonius Kalker | 2008-08-12 |
| 7286451 | Copy control using digital speed bumps | Gijsbrecht C. Wirtz, Antonius Kalker, Antonius Adriaan Maria Staring, Johan Paul Marie Gerard Linnartz | 2007-10-23 |
| 7152161 | Watermarking | Alphons Antonius Maria Lambertus Bruekers, Antonius Kalker, Minne Van Der Veen | 2006-12-19 |
| 7146394 | Watermark detection | Antonius A. C. M. Kalker, Adrianus Johannes Maria Denissen | 2006-12-05 |
| 7016846 | Robust checksums | Alphons Antonius Maria Lambertus Bruekers, Minne Van Der Veen, Antonius Kalker | 2006-03-21 |
| 6865589 | Watermark detection | Antonius A. C. M. Kalker, Adranius J. M. Denissen | 2005-03-08 |
| 6714658 | Detection of auxiliary data in an information signal | Antonius Kalker | 2004-03-30 |
| 6707930 | Method and arrangement for embedding a watermark in an information signal | Antonius Kalker | 2004-03-16 |
| 6671388 | Method and apparatus for detecting a watermark in a manipulated image | Marc Joseph Rita Op De Beeck, Antonius Kalker | 2003-12-30 |
| 6577745 | Watermark detection | Marc Joseph Rita Op De Beeck, Geert F. G. Depovere, Antonius A. C. M. Kalker | 2003-06-10 |
| 6577747 | Detection of auxiliary data in an information signal | Antonius Kalker | 2003-06-10 |
| 6505223 | Watermark detection | Antonius A. C. M. Kalker, Adrianus Johannes Maria Denissen | 2003-01-07 |
| 6477431 | Watermark detection | Antonius A. C. M. Kalker, Maurice Jerome Justin Jean-Baptiste Maes, Geert F. G. Depovere, Johan Paul Marie Gerard Linnartz | 2002-11-05 |