Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5394470 | Horizontal pulse augmentation of a video signal | William J. Buynak, Eugene Leonard, Karoly Budai | 1995-02-28 |
| 5003590 | Encoding an optical video disc to inhibit video tape recording | Bernard J. Lechner, Eugene Leonard | 1991-03-26 |
| 4633309 | Cable television master/slave decoder control | Tony Li | 1986-12-30 |
| 4454543 | Dynamic video scrambling | John A. Lund, David L. Richardson | 1984-06-12 |
| 4340906 | Video signal coding by video signal polarity reversal on the basis of brightness level comparison | Pieter den Toonder, Johannes C. Seltenrijch, Pieter J. Fondse, Howard F. Jirka | 1982-07-20 |
| 4336553 | Method of coding audio and video signals | Pieter den Toonder, Johannes C. Seltenrijch, Richard G. Merrell | 1982-06-22 |
| 4323922 | Television coding system with channel level identification | Pieter den Toonder, Glenn P. Doles, John A. Lund, Richard G. Merrell | 1982-04-06 |