Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11997330 | Audio sampling clock synchronization | Matthew Barnhill, Roger R. Darr | 2024-05-28 |
| 11581862 | Passive sub-audible room path learning with noise modeling | Roger R. Darr | 2023-02-14 |
| 11245375 | System for configuration and status reporting of audio processing in TV sets | Timothy Brault, Fen Xu | 2022-02-08 |
| 10652689 | Configurable multi-band compressor architecture with advanced surround processing | Mikio Oda | 2020-05-12 |
| 8958516 | NICAM decoder with output resampler | Roger R. Darr, Matthew Barnhill | 2015-02-17 |
| 8494104 | NICAM decoder with output resampler | Roger R. Darr, Matthew Barnhill | 2013-07-23 |
| 8264606 | Direct digital encoding and radio frequency modulation for broadcast television applications | Matthew Barnhill, William Kevin Kay | 2012-09-11 |
| 8023590 | NICAM audio signal resampler | Roger R. Darr, Matthew Barnhill | 2011-09-20 |
| 7940842 | Reciprocal index lookup for BTSC compatible coefficients | Roger R. Darr, Matthew Barnhill | 2011-05-10 |
| 7929054 | Up-sampling television audio signals for encoding | Matthew Barnhill | 2011-04-19 |
| 7830452 | Direct digital encoding and radio frequency modulation for broadcast television applications | Matthew Barnhill, W. Kevin Kay | 2010-11-09 |
| 7719616 | Direct digital encoding and radio frequency modulation for broadcast television application | Matthew Barnhill, W. Kevin Kay | 2010-05-18 |
| 7639307 | Up-sampling television audio signals for encoding | Matthew Barnhill | 2009-12-29 |
| 6259482 | Digital BTSC compander system | Roger R. Darr | 2001-07-10 |
| 6037993 | Digital BTSC compander system | — | 2000-03-14 |
| 5001729 | High speed half duplex modem with fast turnaround protocol | Taruna Tjahjadi, Randy D. Nash | 1991-03-19 |
| 4894847 | High speed half duplex modem with fast turnaround protocol | Taruna Tjahjadi, German E. Correa, John N. Martin, Charles H. McCorvey, Jr., Randy D. Nash +5 more | 1990-01-16 |
| 4868864 | Autocorrelating 2400 bps handshake sequence detector | Taruna Tjahjadi, Cynthia A. Panella, Randy D. Nash, Steven R. Sweitzer, John N. Martin +2 more | 1989-09-19 |
| 4849703 | Method and apparatus for generating a data sampling clock locked to a baud clock contained in a data signal | German E. Correa, Randy D. Nash, Cynthia A. Panella, Taruna Tjahjadi | 1989-07-18 |