Assignee
DOLBY LABORATORIES INC
14 patents
Top patents by PatentIndex Score
US4024344AMay 17, 1977
Center channel derivation for stereophonic cinema sound
DOLBY LABORATORIES INC151 citations92
US4074083AFeb 14, 1978
Stereophonic sound system particularly useful in a cinema auditorium
DOLBY LABORATORIES INC26 citations75
US4338684AJul 6, 1982
Scanning system for reproducing side-by-side optical sound tracks
DOLBY LABORATORIES INC7 citations73
US4223188ASep 16, 1980
Scanning system for reproduction of optical sound tracks with clear area noise discriminator delay means
DOLBY LABORATORIES INC8 citations73
US4066914AJan 3, 1978
Electrically variable impedance circuits
DOLBY LABORATORIES INC13 citations72
US4001732AJan 4, 1977
Calibration oscillators for noise reduction systems
DOLBY LABORATORIES INC10 citations72
US3967219AJun 29, 1976
Signal compressors and expanders
DOLBY LABORATORIES INC17 citations72
US3949325AApr 6, 1976
Audio equalizers for large rooms
DOLBY LABORATORIES INC15 citations72
US3934190AJan 20, 1976
Signal compressors and expanders
DOLBY LABORATORIES INC16 citations72
US4388729AJun 14, 1983
Systems for reducing noise in video signals using amplitude averaging of undelayed and time delayed signals
DOLBY LABORATORIES INC16 citations70
US3978409AAug 31, 1976
Signal compressors and expanders
DOLBY LABORATORIES INC13 citations70
US3932819AJan 13, 1976
Electrical filters
DOLBY LABORATORIES INC8 citations68
US4184055AJan 15, 1980
Scanning system for reproduction of optical sound tracks with clear area noise discriminator delay means
DOLBY LABORATORIES INC4 citations62
US3997850ADec 14, 1976
Floating electrical output circuit
DOLBY LABORATORIES INC6 citations61