Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7664369 | Method and apparatus for improving the playability of a PAL or NTSC video signal containing color burst modifications | Ronald Quan | 2010-02-16 |
| 6701062 | Generational copy control of a video signal | Johan Cornelis Talstra, Mark Hollar, Kordian Kurowski, David C. Collier, James R. Holzgrafe +4 more | 2004-03-02 |
| 6516132 | Method and apparatus for improving the effects of color burst modifications to a video signal | Ronald Quan | 2003-02-04 |
| 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, Ronald Quan, Gerow D. Brill | 2000-07-18 |
| 6018374 | Method and system for preventing the off screen copying of a video or film presentation | — | 2000-01-25 |