Issued Patents All Time
Showing 76–100 of 120 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826352 | Dynamic video copy protection system | — | 2004-11-30 |
| 6711261 | Enhancing concealment in the presence of fine mistuning for various TV scrambling techniques | — | 2004-03-23 |
| 6617910 | Low noise analog multiplier utilizing nonlinear local feedback elements | — | 2003-09-09 |
| 6516132 | Method and apparatus for improving the effects of color burst modifications to a video signal | William J. Wrobleski | 2003-02-04 |
| 6501842 | Method and apparatus for modifying a video signal by back porch lowering | — | 2002-12-31 |
| 6459795 | Method and apparatus for enhancing the scrambling of a TV signal via erroneous clamp signals | — | 2002-10-01 |
| 6424716 | Method and apparatus for improved horizontal and vertical overlay signals for greater concealment in modern TV sets | — | 2002-07-23 |
| 6421497 | Method for locating copy protection pulses within selected video lines of a video signal | — | 2002-07-16 |
| 6404889 | Protection of a component video signal | John O. Ryan, Kordian Kurowski | 2002-06-11 |
| 6349139 | Method and apparatus for minimizing chroma subcarrier instability caused by a video line scrambling system | — | 2002-02-19 |
| 6327422 | Method and apparatus for modifying the effects of color burst modifications to a video signal | John O. Ryan | 2001-12-04 |
| 6295360 | Method and apparatus to defeat composite video signal protection | John O. Ryan, Kordian Kurowski | 2001-09-25 |
| 6285765 | Method and apparatus for reducing effects of copy protection of composite video signal | — | 2001-09-04 |
| 6173109 | Method and apparatus for removing or defeating effects of copy protection signals from a video signal | — | 2001-01-09 |
| 6091822 | Method and apparatus for recording scrambled video audio signals and playing back said video signal, descrambled, within a secure environment | Andrew Mellows, John O. Ryan, William J. Wrobleski, Gerow D. Brill | 2000-07-18 |
| 6058191 | Method and apparatus for modifying the envelope of a RF carrier signal to remove copy protection signals therefrom | — | 2000-05-02 |
| 6009172 | Method and apparatus for optimizing scrambling concealment of a video signal by modifying a specialized sync pulse | Kordian Kurowski | 1999-12-28 |
| 6002830 | Method and apparatus for removing or defeating effects of copy protection signals from a video signal | — | 1999-12-14 |
| 5953417 | Method and apparatus for digitally removing or defeating effects of copy protection signals from a video signal | — | 1999-09-14 |
| 5784523 | Method and apparatus for defeating effects of color burst modifications to a video signal | John O. Ryan | 1998-07-21 |
| 5748733 | Method and apparatus to reduce effects of certain copy protection purses within a video signal | — | 1998-05-05 |
| 5633927 | Video copy protection process enhancement to introduce horizontal and vertical picture distortions | John O. Ryan | 1997-05-27 |
| 5625691 | Method and apparatus to defeat certain copy protection pulses within a video signal | — | 1997-04-29 |
| 5608799 | Method and apparatus for scrambling and descrambling of video signal with edge fill | John O. Ryan, James R. Holzgrafe, Peter Wonfor | 1997-03-04 |
| 5583936 | Video copy protection process enhancement to introduce horizontal and vertical picture distortions | Peter Wonfor, Alistair Knox, Jeremy Corcoran, John O. Ryan | 1996-12-10 |