Inventor
TAWARAGI YUJI
JP14 patents
⚠️ This page may combine multiple inventors who share the name “TAWARAGI YUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIONEER CORP
6 patentsUS6341110B1Jan 22, 2002
Pre-pit signal detecting apparatus and information recording apparatus
PIONEER CORP31 citations92
US10520324B2Dec 31, 2019
Route search device, control method, program and storage medium
PIONEER CORP4 citations68
US7362681B2Apr 22, 2008
Recording medium type determining apparatus and method for determining presence of wobble on a recording medium
PIONEER CORP5 citations62
US7218584B2May 15, 2007
Information recording and reproducing apparatus
PIONEER CORP3 citations62
US7366067B2Apr 29, 2008
Recording clock signal generating apparatus and recording clock signal generating method for information recording device
PIONEER CORP1 citations51
US9927468B2Mar 27, 2018
Power theft inspection apparatus and method, and recording medium
PIONEER CORP0 citations41
PIONEER ELECTRONIC CORP
6 patentsUS6137756AOct 24, 2000
Information recording using technique for detecting erroneous recording
PIONEER ELECTRONIC CORP23 citations92
US5130963AJul 14, 1992
Optical disk player
PIONEER ELECTRONIC CORP39 citations91
US5471446ANov 28, 1995
Optical disk player having beam correction means
PIONEER ELECTRONIC CORP10 citations72
US5206848AApr 27, 1993
Optical disk player having tilt servo control absent tilt sensor
PIONEER ELECTRONIC CORP19 citations72
US5025434AJun 18, 1991
Tracking servo apparatus of disk player
PIONEER ELECTRONIC CORP9 citations70
US5164646ANov 17, 1992
Tracking servo system
PIONEER ELECTRONIC CORP6 citations61