Issued Patents All Time
Showing 1–25 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6016473 | Low bit-rate spatial coding method and system | — | 2000-01-18 |
| 5909664 | Method and apparatus for encoding and decoding audio information representing three-dimensional sound fields | Mark F. Davis, Craig C. Todd | 1999-06-01 |
| 5873065 | Two-stage compression and expansion of coupling processed multi-channel sound signals for transmission and recording | Kenzo Akagiri, Mark F. Davis, Craig C. Todd | 1999-02-16 |
| 5632005 | Encoder/decoder for multidimensional sound fields | Mark F. Davis, Craig C. Todd | 1997-05-20 |
| 5583962 | Encoder/decoder for multidimensional sound fields | Mark F. Davis, Craig C. Todd | 1996-12-10 |
| 5185806 | Audio compressor, expander, and noise reduction circuits for consumer and semi-professional use | Stanley G. Cossette | 1993-02-09 |
| 5003522 | Disc reproducing system for compensating mechanical imperfections | — | 1991-03-26 |
| 4922535 | Transient control aspects of circuit arrangements for altering the dynamic range of audio signals | — | 1990-05-01 |
| 4918678 | Disc reproducing system for compensating mechanical imperfections | — | 1990-04-17 |
| 4815068 | Audio encoder for use with more than one decoder each having different characteristics | Ioan R. Allen, Randolph G. Pauker | 1989-03-21 |
| 4801890 | Circuit arrangements for modifying dynamic range using variable combining techniques | — | 1989-01-31 |
| 4786879 | Attenuator circuit employing bootstrapping | — | 1988-11-22 |
| 4773094 | Apparatus and method for calibrating recording and transmission systems | — | 1988-09-20 |
| 4766395 | Circuits to provide desired conductance characteristics using a FET | — | 1988-08-23 |
| 4755979 | Disc reproducing system for compensating mechanical imperfections | — | 1988-07-05 |
| 4736433 | Circuit arrangements for modifying dynamic range using action substitution and superposition techniques | — | 1988-04-05 |
| 4712208 | Disc reproducing system for compensating mechanical imperfections | — | 1987-12-08 |
| 4701722 | Circuit arrangements for modifying dynamic range using series and parallel circuit techniques | — | 1987-10-20 |
| 4498055 | Circuit arrangements for modifying dynamic range | — | 1985-02-05 |
| 4498060 | Circuit arrangements for modifying dynamic range using series arranged bi-linear circuits | — | 1985-02-05 |
| 4490691 | Compressor-expander circuits and, circuit arrangements for modifying dynamic range, for suppressing mid-frequency modulation effects and for reducing media overload | — | 1984-12-25 |
| 4388729 | Systems for reducing noise in video signals using amplitude averaging of undelayed and time delayed signals | Paul A. Spencer | 1983-06-14 |
| 4355383 | Apparatus for scanning variable area optical sound tracks by parallel processing discrete photosensor outputs | — | 1982-10-19 |
| 4338684 | Scanning system for reproducing side-by-side optical sound tracks | — | 1982-07-06 |
| 4281217 | Apparatus and method for the identification of specially encoded FM stereophonic broadcasts | — | 1981-07-28 |