Issued Patents All Time
Showing 51–75 of 120 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8248532 | Method and apparatus for providing a content control signal via color burst phase modifications | John F. Cloutman | 2012-08-21 |
| 8204363 | Method and apparatus for attenuating or eliminating at least a portion of color burst modifications to a video signal | — | 2012-06-19 |
| 8111074 | Method and apparatus to measure differential phase and frequency modulation distortions for audio equipment | — | 2012-02-07 |
| 8094818 | Method to synthesize video copy protection signals | — | 2012-01-10 |
| 7907727 | System and method for allowing copying or distribution of a copy protected signal | John O. Ryan | 2011-03-15 |
| 7805056 | Methods and apparatus for providing cycles of normal and non normal phase in a color burst signal | — | 2010-09-28 |
| 7792293 | Method and apparatus for modifying a subsequently generated control command in a content control system | — | 2010-09-07 |
| 7784103 | Method and apparatus for storing copy protection information separately from protected content | John O. Ryan, James Salter | 2010-08-24 |
| 7734142 | Apparatus for providing a modified analog video signal from an internet transmission of a video signal | — | 2010-06-08 |
| 7706533 | Copy protection for video signal using narrowed horizontal synchronization signals | — | 2010-04-27 |
| 7664369 | Method and apparatus for improving the playability of a PAL or NTSC video signal containing color burst modifications | William J. Wrobleski | 2010-02-16 |
| 7620178 | Copy protection for video signal added pulses | Peter Wonfor, Alistair Knox, Jeremy Corcoran, John O. Ryan | 2009-11-17 |
| 7550977 | Method and apparatus to measure differential phase and frequency modulation distortions for audio equipment | — | 2009-06-23 |
| RE40689 | Method and apparatus for disabling anti-copy protection system in video signals | John F. Peruzzi | 2009-03-31 |
| 7492896 | Copy protection for video signal using added negative amplitude pulse | — | 2009-02-17 |
| 7352863 | Copy protection for video signal using narrowed horizontal synchronization signals and amplitude modulation | — | 2008-04-01 |
| 7298962 | Method and apparatus for reducing and restoring the effectiveness of a commercial skip system | John O. Ryan, Peter Wonfor | 2007-11-20 |
| 7236683 | Method and apparatus for providing or enhancing copy protection by adding selected negative-going and positive-going pulses in a video signal HBI | — | 2007-06-26 |
| 7100209 | Method to provide the generation of an incorrect or unreliable vertical/frame rate signal | — | 2006-08-29 |
| 7085380 | Method for modifying a copy protected video signal with a negative amplitude pulse | — | 2006-08-01 |
| 7050698 | Method and apparatus for synthesizing or modifying a copy protection signal using a lowered signal level portion | — | 2006-05-23 |
| 7039294 | Method and apparatus for modifying the effects of color burst modifications to a video signal | — | 2006-05-02 |
| 6931547 | Method and apparatus for identifying a vertical blanking interval in a television signal | — | 2005-08-16 |
| 6839433 | Method and apparatus for generating a signal that defeats illegal cable decoders | — | 2005-01-04 |
| 6836549 | Method and apparatus for synthesizing and reducing the effects of video copy protection signals | Gerow D. Brill | 2004-12-28 |