Issued Patents All Time
Showing 25 most recent of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8068536 | Orthogonal frequency division multiplexing (OFDM) digital radio frequency (RF) transceiver | — | 2011-11-29 |
| 8005121 | Apparatus and method for re-synthesizing signals | — | 2011-08-23 |
| 7929697 | Secure data transmission via multichannel entitlement management and control | David Emery Virag | 2011-04-19 |
| 7899087 | Apparatus and method for frequency translation | — | 2011-03-01 |
| 7800690 | Low noise encoding and decoding apparatus and method | Haoping Yu, Billy Wesley Beyers, Jr. | 2010-09-21 |
| 7489730 | Cross-encoding of information in independent channels | — | 2009-02-10 |
| 7292638 | Transform-based alias cancellation multi-channel tuner | — | 2007-11-06 |
| 7123652 | Sampled data digital filtering system | — | 2006-10-17 |
| 7072418 | Method and apparatus for performing Nyquist folding frequency modulation | — | 2006-07-04 |
| 7054281 | Multi-channel tuner using a discrete cosine transform | — | 2006-05-30 |
| 6873368 | Low noise encoding and decoding method | Haoping Yu, Billy Wesley Beyers, Jr. | 2005-03-29 |
| 6597750 | Opposite polarization interference cancellation in satellite communication | Paul Gothard Knutson, Kumar Ramaswamy | 2003-07-22 |
| 6466277 | VSB digital modulator | — | 2002-10-15 |
| 6408322 | Apparatus and method for anchoring predetermined points of the impulse frequency response of a physically-realized filter | — | 2002-06-18 |
| 6317167 | Sine x/x compensation circuitry merged with a digital modulator | — | 2001-11-13 |
| 6313772 | Complex carrier signal generator for determining cyclic wave shape | — | 2001-11-06 |
| 6310566 | Digital data sample rate conversion system with delayed interpolation | — | 2001-10-30 |
| 6229464 | Pulse code modulated to DC centered VSB converter | — | 2001-05-08 |
| 5943369 | Timing recovery system for a digital signal processor | Paul Gothard Knutson, Kumar Ramaswamy | 1999-08-24 |
| 5878088 | Digital variable symbol timing recovery system for QAM | Paul Gothard Knutson, Kumar Ramaswamy | 1999-03-02 |
| 5838600 | DC gain invariant filter implementation | Paul Gothard Knutson | 1998-11-17 |
| 5309111 | Apparatus for measuring skew timing errors | Greg A. Kranawetter | 1994-05-03 |
| 5282154 | System for determining and repairing instability in an IIR filter suitable for use in deghosting apparatus | Paul Gothard Knutson | 1994-01-25 |
| 5047857 | Television system with zoom capability for at least one inset picture | David J. Duffield | 1991-09-10 |
| 4991022 | Apparatus and a method for automatically centering a video zoom and pan display | Barth Alan Canfield, David J. Duffield | 1991-02-05 |