Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7868711 | Arrangement for pulse-width modulating an input signal | Lûtsen Ludgeras Albertus Hendrikus Dooper | 2011-01-11 |
| 7728659 | Arrangement for amplifying a PWM input signal | Lutsen DOOPER | 2010-06-01 |
| 6975257 | Sigma-delta modulation | Derk Reefman | 2005-12-13 |
| 6819275 | Audio signal compression | Derk Reefman | 2004-11-16 |
| 6556161 | Digital to analog converter employing dynamic element matching | — | 2003-04-29 |
| 6507299 | Embedding supplemental data in an information signal | — | 2003-01-14 |
| 6157330 | Embedding supplemental data in an encoded signal, such as audio / video watermarks | Alphons A. M. L. Bruekers, Geert F. G. Depovere, Arnoldus Werner Johannes Oomen | 2000-12-05 |
| 5243345 | Sigma-delta modulator having a plural order loop filter with successive filter sections of successively smaller signal excursion range | Peter J. A. Naus, Eise C. Dijkmans | 1993-09-07 |
| 5182479 | Gate circuit having increased voltage handling capability | Frank Paul Behagel, Tiemen Poorter | 1993-01-26 |
| 4684986 | Television signal memory-write circuit | Frits A. Steenhof, Petrus W. G. Welles, Jan Van Der Meer | 1987-08-04 |