Inventor
KUNUGI YOSHIRO
JP12 patents
Patents
12 patentsUS4980914ADec 25, 1990
Sound field correction system
PIONEER ELECTRONIC CORP68 citations96
US4739513AApr 19, 1988
Method and apparatus for measuring and correcting acoustic characteristic in sound field
PIONEER ELECTRONIC CORP83 citations96
US4622691ANov 11, 1986
Mobile sound field correcting device
PIONEER ELECTRONIC CORP57 citations95
US4868878ASep 19, 1989
Sound field correction system
PIONEER ELECTRONIC CORP28 citations92
US4694498ASep 15, 1987
Automatic sound field correcting system
PIONEER ELECTRONIC CORP40 citations92
US4688258AAug 18, 1987
Automatic graphic equalizer
PIONEER ELECTRONIC CORP29 citations92
US4648117AMar 3, 1987
Mobile sound field correcting device
PIONEER ELECTRONIC CORP47 citations92
US4415862ANov 15, 1983
Pulse width modulation amplifier
PIONEER ELECTRONIC CORP41 citations92
US4644292AFeb 17, 1987
Automatic gain and frequency characteristic control unit in audio device
PIONEER ELECTRONIC CORP19 citations81
US4637049AJan 13, 1987
Car-mounted audio system
PIONEER ELECTRONIC CORP10 citations73
US4418323ANov 29, 1983
Oscillator having capacitor charged and discharged by current mirror circuits
PIONEER ELECTRONIC CORP4 citations62
US4348616ASep 7, 1982
Preset lighting device
PIONEER ELECTRONIC CORP5 citations62