Ray M. Dolby
33Patents
16h-index
8Co-inventors
74Inventor score
Filing activity: Jun 7, 1974 → Apr 7, 1998
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5583962A | Encoder/decoder for multidimensional sound fields | Electricity | 275 | Expired |
| US5632005A | Encoder/decoder for multidimensional sound fields | Electricity | 221 | Expired |
| US4773094A | Apparatus and method for calibrating recording and transmission systems | Physics | 159 | Expired |
| US5909664A | Method and apparatus for encoding and decoding audio information representing three-dimensional sound fields | Electricity | 118 | Expired |
| US4024344A | Center channel derivation for stereophonic cinema sound | Electricity | 99 | Expired |
| US4281217A | Apparatus and method for the identification of specially encoded FM stereophonic broadcasts | Electricity | 54 | Expired |
| US5873065A | Two-stage compression and expansion of coupling processed multi-channel sound signals for transmission and recording | Physics | 54 | Expired |
| US6016473A | Low bit-rate spatial coding method and system | Electricity | 46 | Expired |
| US4490691A | Compressor-expander circuits and, circuit arrangements for modifying dynamic range, for suppressing mid-frequency modulation effects and for reducing media overload | Electricity | 46 | Expired |
| US4922535A | Transient control aspects of circuit arrangements for altering the dynamic range of audio signals | Electricity | 35 | Expired |
| US4918678A | Disc reproducing system for compensating mechanical imperfections | Physics | 27 | Expired |
| US3972010A | Compressors, expanders and noise reduction systems | Electricity | 25 | Expired |
| US4736433A | Circuit arrangements for modifying dynamic range using action substitution and superposition techniques | Electricity | 22 | Expired |
| US4355383A | Apparatus for scanning variable area optical sound tracks by parallel processing discrete photosensor outputs | Physics | 21 | Expired |
| US4701722A | Circuit arrangements for modifying dynamic range using series and parallel circuit techniques | Electricity | 17 | Expired |
| US4815068A | Audio encoder for use with more than one decoder each having different characteristics | Physics | 17 | Expired |
| US5185806A | Audio compressor, expander, and noise reduction circuits for consumer and semi-professional use | Electricity | 15 | Expired |
| US3967219A | Signal compressors and expanders | Electricity | 14 | Expired |
| US3978409A | Signal compressors and expanders | Electricity | 13 | Expired |
| US4388729A | Systems for reducing noise in video signals using amplitude averaging of undelayed and time delayed signals | Electricity | 13 | Expired |
| US4498060A | Circuit arrangements for modifying dynamic range using series arranged bi-linear circuits | Electricity | 12 | Expired |
| US3934190A | Signal compressors and expanders | Electricity | 10 | Expired |
| US4498055A | Circuit arrangements for modifying dynamic range | Electricity | 10 | Expired |
| US4801890A | Circuit arrangements for modifying dynamic range using variable combining techniques | Electricity | 8 | Expired |
| US5003522A | Disc reproducing system for compensating mechanical imperfections | Physics | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.