Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5754649 | Video media security and tracking system | John O. Ryan, E. Fraser Morrison | 1998-05-19 |
| 5739864 | Apparatus for inserting blanked formatted fingerprint data (source ID, time/date) in to a video signal | — | 1998-04-14 |
| 5668603 | Video finger print method and apparatus | — | 1997-09-16 |
| 5659613 | Method and apparatus for copy protection for various recording media using a video finger print | John O. Ryan | 1997-08-19 |