Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7907211 | Method and device for generating and detecting fingerprints for synchronizing audio and video | David K. Roberts, Adrianus Johannes Maria Denissen, Warner Rudolph Theophile Ten Kate | 2011-03-15 |
| 7561715 | Method and arrangement for watermark detection | Johan Cornelis Talstra, Gerrit Langelaar, Antonius Kalker, Maurice Jerome Justin Jean-Baptiste Maes | 2009-07-14 |
| 7549052 | Generating and matching hashes of multimedia content | Jaap Haitsma, Antonius Kalker, Constant Paul Marie Jozef Baggen | 2009-06-16 |
| 7478242 | Increasing integrity of watermarks using robust features | Antonius Kalker | 2009-01-13 |
| 7263052 | Method for generating a binary signal having a predetermined spectral shape | Willem Marie Julia Marcel Coene, Aloysius Spruijt, Paulus Reinier Joannes Van Roosmalen, Jan Harm De Boer | 2007-08-28 |
| 7168083 | Content monitoring | Antonius Kalker | 2007-01-23 |
| 7068574 | Record carrier, playback apparatus and information system comprising a record carrier and a playback apparatus | Willem Marie Julia Marcel Coene, Jan Harm De Boer, Franciscus Antonius Johannes Kamperman, Aloysius Spruijt, Paulus Reinier Joannes Van Roosmalen | 2006-06-27 |
| 6718287 | Watermark detection | Antonius Kalker, Johan Paul Marie Gerard Linnartz | 2004-04-06 |
| 6654332 | Method for generating a binary signal having a predetermined spectral shape | Willem Marie Julia Marcel Coene, Aloysius Spruijt, Paulus Reinier Joannes Van Roosmalen, Jan Harm De Boer | 2003-11-25 |