Inventor
TOKUSHUKU NOBUHIRO
JP38 patents
Patents
38 patentsUS6549497B2Apr 15, 2003
Optical reproducing method
HITACHI LTD244 citations99
US5936933AAug 10, 1999
Information recording medium and method and apparatus for recording and reproducing information using the same
HITACHI LTD105 citations99
US6490236B1Dec 3, 2002
Method and apparatus for optical disk device
HITACHI LTD79 citations98
US6219331B1Apr 17, 2001
Information recording medium with tracks having a groove structure having a fixed cycle of wobble
HITACHI LTD37 citations97
US5930228AJul 27, 1999
Method and apparatus for recording and reproducing information using pseudo identification signal
HITACHI LTD53 citations97
US6545960B2Apr 8, 2003
Information recording medium and method and apparatus for recording and reproducing information using the same
HITACHI LTD15 citations96
US6542458B2Apr 1, 2003
Information recording medium having wobbled groves
HITACHI LTD21 citations96
US6388987B2May 14, 2002
Information recording medium having wobbled groove structure and plural zones
HITACHI LTD24 citations96
US6383595B1May 7, 2002
Information recording medium
HITACHI LTD33 citations92
US6340555B1Jan 22, 2002
Information recording medium and information recording and reproducing apparatus using the same
HITACHI LTD17 citations92
US6132932AOct 17, 2000
Information recording medium and information recording and reproducing apparatus using the same
HITACHI LTD18 citations92
US5539710AJul 23, 1996
Video optical disk system compatible with both read only and writable optical disks having the same recording format
HITACHI LTD24 citations90
US6728176B2Apr 27, 2004
Information recording method
HITACHI LTD6 citations82
US6552978B2Apr 22, 2003
Information recording apparatus
HITACHI LTD8 citations82
US6545961B2Apr 8, 2003
Optical reproducing method
HITACHI LTD7 citations82
US6545962B2Apr 8, 2003
Optical reproducing method for reproducing information on an optical medium having groove structure with fixed cycle of wobble
HITACHI LTD6 citations82
US6490233B2Dec 3, 2002
Optical reproducing method
HITACHI LTD9 citations82
US4991163AFeb 5, 1991
Optical information medium with sample mark area and multiple transcription prevention
HITACHI LTD20 citations78
US7092330B2Aug 15, 2006
Information recording method
HITACHI LTD4 citations74
US7085202B2Aug 1, 2006
Information recording method
HITACHI LTD4 citations74
US6996036B2Feb 7, 2006
Information recording method
HITACHI LTD1 citations74
US6665244B2Dec 16, 2003
Optical reproducing method
HITACHI LTD4 citations74
US6580686B2Jun 17, 2003
Information recording medium recording data on wobbled groove structure of recording medium
HITACHI LTD1 citations74
US6542448B2Apr 1, 2003
Information recording apparatus for recording information on an optical medium having a groove structure with a fixed cycle of wobble
HITACHI LTD4 citations74
US6493295B2Dec 10, 2002
Information recording apparatus
HITACHI LTD4 citations74
US6456579B1Sep 24, 2002
Method for recording information, apparatus for recording information, and information recording medium
HITACHI LTD8 citations74
US6388986B2May 14, 2002
Information recording medium having wobbled groove structure
HITACHI LTD1 citations74
US5642345AJun 24, 1997
Recording/reproducing apparatus including frequency modulator for frequency-modulating digital-modulated signal and frequency demodulator for frequency-demodulating signal to obtain digital-modulated signal
HITACHI LTD7 citations73
US4996682AFeb 26, 1991
Optical information medium having paired wobble pitts with continuous groove therebetween
HITACHI LTD15 citations73
US7106669B2Sep 12, 2006
Information recording method
HITACHI LTD0 citations63
US7088654B2Aug 8, 2006
Information recording method
HITACHI LTD0 citations63
US7088653B2Aug 8, 2006
Information recording method
HITACHI LTD0 citations63
US7085208B2Aug 1, 2006
Information recording method
HITACHI LTD0 citations63
US7082085B2Jul 25, 2006
Information recording method
HITACHI LTD0 citations63
US7082083B2Jul 25, 2006
Information recording method
HITACHI LTD0 citations63
US7082087B2Jul 25, 2006
Information recording method
HITACHI LTD0 citations63
US7082096B2Jul 25, 2006
Information recording method
HITACHI LTD0 citations63
US6522612B2Feb 18, 2003
Method for recording information, apparatus for recording information and information recording medium
HITACHI LTD2 citations63