Issued Patents All Time
Showing 25 most recent of 77 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10536756 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, Peter Wonfor | 2020-01-14 |
| 10129605 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, Peter Wonfor | 2018-11-13 |
| 9549226 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, Peter Wonfor | 2017-01-17 |
| 9060182 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, Peter Wonfor | 2015-06-16 |
| 8365307 | Method and apparatus for storing copy protection information separately from protected content | Ronald Quan, James Salter | 2013-01-29 |
| 8259939 | System and method for allowing copying or distribution of a copy protected signal | Ronald Quan | 2012-09-04 |
| 8254756 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, Peter Wonfor | 2012-08-28 |
| 8014524 | Scaling independent technique for watermarking images with recorder shut-off | — | 2011-09-06 |
| 7907727 | System and method for allowing copying or distribution of a copy protected signal | Ronald Quan | 2011-03-15 |
| 7784103 | Method and apparatus for storing copy protection information separately from protected content | Ronald Quan, James Salter | 2010-08-24 |
| 7764790 | Scaling independent technique for watermarking images | — | 2010-07-27 |
| 7620178 | Copy protection for video signal added pulses | Peter Wonfor, Alistair Knox, Jeremy Corcoran, Ronald Quan | 2009-11-17 |
| 7298962 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | Ronald Quan, Peter Wonfor | 2007-11-20 |
| 7274790 | Scrambling and descrambling a high definition TV signal | James R. Holzgrafe, Mark Hollar | 2007-09-25 |
| 6950520 | Method and apparatus for carrying data in a video signal so that the data is not recorded | James R. Holzgrafe, Mark Hollar | 2005-09-27 |
| 6701062 | Generational copy control of a video signal | Johan Cornelis Talstra, Mark Hollar, Kordian Kurowski, David C. Collier, William J. Wrobleski +4 more | 2004-03-02 |
| 6600873 | Method and apparatus for detecting modified color burst signals to prevent the copying of a video program | Gerow D. Brill | 2003-07-29 |
| 6590979 | Method and apparatus for compression compatible video scrambling | — | 2003-07-08 |
| 6542609 | Method and apparatus for scrambling a high definition television signal | James R. Holzgrafe, Mark Hollar | 2003-04-01 |
| 6411713 | Method of adaptive control of the presence of a copy protection signal | — | 2002-06-25 |
| 6404889 | Protection of a component video signal | Kordian Kurowski, Ronald Quan | 2002-06-11 |
| 6381367 | Method and apparatus for compression compatible video fingerprinting | — | 2002-04-30 |
| 6374036 | Method and apparatus for copy-once watermark for video recording | Patrice Capitant, Clayton L. Davidson, James R. Holzgrafe, Kordian Kurowski, Andrew Mellows +1 more | 2002-04-16 |
| 6330334 | Method and system for information dissemination using television signals | — | 2001-12-11 |
| 6327422 | Method and apparatus for modifying the effects of color burst modifications to a video signal | Ronald Quan | 2001-12-04 |