Inventor
NOMOTO TAKAYUKI
JP21 patents
⚠️ This page may combine multiple inventors who share the name “NOMOTO TAKAYUKI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
PIONEER CORP
8 patentsUS6590857B2Jul 8, 2003
Optical disk
PIONEER CORP31 citations92
US6657930B1Dec 2, 2003
Tracking control circuit for tracking a wobbling track formed on an optical recording medium
PIONEER CORP14 citations83
US6618346B1Sep 9, 2003
Optical pickup device having aperture restriction arrangement
PIONEER CORP4 citations63
US6992953B2Jan 31, 2006
Tracking servo apparatus of optical information recording and reproducing apparatus
PIONEER CORP3 citations62
US6937547B2Aug 30, 2005
System and method for detecting tracking error
PIONEER CORP5 citations62
US7190664B2Mar 13, 2007
High density optical recording medium and method for reproducing thereof
PIONEER CORP1 citations52
US7961574B2Jun 14, 2011
Kind identifying apparatus, kind identifying method, and identifying program
PIONEER CORP1 citations51
US7440364B2Oct 21, 2008
Tracking error signal generation device and tracking error signal generation method
PIONEER CORP0 citations40
PIONEER ELECTRONIC CORP
8 patentsUS5717682AFeb 10, 1998
Optical disk having information pits of different lengths and shapes
PIONEER ELECTRONIC CORP23 citations92
US5289443AFeb 22, 1994
Apparatus for playing optical recording media of different recording densities
PIONEER ELECTRONIC CORP16 citations74
US5559787ASep 24, 1996
Polarization of a reflected light beam is changed according to the depth of pits
PIONEER ELECTRONIC CORP18 citations73
US5359591AOct 25, 1994
Optical disc having information pits in form of plurality of fragments arranged in symmetrical pattern
PIONEER ELECTRONIC CORP18 citations73
US5357499AOct 18, 1994
Optical disk and optical disk reproducing apparatus
PIONEER ELECTRONIC CORP15 citations73
US5621719AApr 15, 1997
Optical disk and apparatus for reproducing the same
PIONEER ELECTRONIC CORP6 citations62
US5539722AJul 23, 1996
Optical information reproducing system with a reading beam having frequency components of N wavelengths corresponding to four times the N depths to a row of pits
PIONEER ELECTRONIC CORP3 citations62
US5523992AJun 4, 1996
Optical disk reproducing apparatus for reading a track by irradiating two tracks with single beam spot
PIONEER ELECTRONIC CORP5 citations62