Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6973573 | Detection of a digital data fingerprint | Douglas M. Carson | 2005-12-06 |
| 6768709 | Hiding digital data in a digital audio or video carrier signal | Douglas M. Carson | 2004-07-27 |
| 6717899 | Optical disc hidden data technique | Douglas M. Carson | 2004-04-06 |
| 6715122 | Copy protection through symbol substitution and induced errors | Douglas M. Carson | 2004-03-30 |
| 6487155 | Optical disc authentication using alternate data modulation encoding schemes | Douglas M. Carson | 2002-11-26 |