Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6707407 | Method for converting a video signal from one of an analogue and digital form to the other of the analogue and digital form with enhanced signal to noise ratio | Anthony Scanlan, Joseph Michael Barry, John P. Purcell, Martin Gerard Cotter | 2004-03-16 |
| 6411330 | Method and a circuit for detecting the presence of a television or other device on the output of a video digital to analog converter | John P. Purcell, Kieran Heffernan | 2002-06-25 |