Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8144868 | Encryption/decryption of program data but not PSI data | Raymond C. Hauge, Richard Lewis | 2012-03-27 |
| 7936870 | Rotation of keys during encryption/decryption | Raymond C. Hauge, Richard Lewis | 2011-05-03 |
| 6239848 | HDTV receiver having fast digital IF AGC and analog RF AGC | Victor G. Mycynek | 2001-05-29 |
| 5978424 | Frame identification system | — | 1999-11-02 |
| 5841820 | Data comparison AGC system for VSB receiver | Gopalan Krishnamurthy | 1998-11-24 |
| 5828404 | VSB mode detection system with comb filter | Gopalan Krishnamurthy | 1998-10-27 |
| 5778028 | DC removal circuit for digital signal | — | 1998-07-07 |
| 5764309 | Sync compensated AGC system for VSB receiver | Gopalan Krishnamurthy | 1998-06-09 |
| 5598220 | Digital signal with multilevel symbols and sync recognition | Richard W. Citta, Gary J. Sgrignoli | 1997-01-28 |
| 5534938 | Digital TV system using segment and field sync signals | Richard W. Citta, Gary J. Sgrignoli | 1996-07-09 |
| 5475714 | DC removal circuit for digital signal | — | 1995-12-12 |
| 5260793 | Receiver post coder selection circuit | Richard W. Citta, Gary J. Sgrignoli | 1993-11-09 |
| 4688246 | CATV scrambling system with compressed digital audio in synchronizing signal intervals | Carl G. Eilers, Ronald Lee | 1987-08-18 |
| 4631587 | Field responsive vertical pulse generator | — | 1986-12-23 |
| 4581641 | Video noise detector | — | 1986-04-08 |
| 4535353 | Vertical reference signal identification system | — | 1985-08-13 |
| 4388639 | Color control circuit for teletext-type decoder | Charles Cox | 1983-06-14 |