Inventor
NAKAJIMA JUNSAKU
JP36 patents
⚠️ This page may combine multiple inventors who share the name “NAKAJIMA JUNSAKU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SHARP KK
34 patentsUS6317280B1Nov 13, 2001
Thermomagnetic recording and reproducing head having a heating head with a width narrower than the magnetic heads, a recording and reproducing device with such a heating head and methods related thereto
SHARP KK60 citations96
US7050383B2May 23, 2006
Optical recording medium recorded with information in depth direction, and method and apparatus of reproduction therefrom
SHARP KK20 citations93
US6147939ANov 14, 2000
Magneto-optical recording medium having intermediate layer of in-plane magnetization
SHARP KK19 citations93
US6143436ANov 7, 2000
Magnetic recording medium and information recording-reproduction method using the same
SHARP KK21 citations93
US5656385AAug 12, 1997
Magnetic recording medium and information recording-reproduction method using the same
SHARP KK30 citations93
US5452272ASep 19, 1995
Magneto-optical recording and reproducing device having light interrupting forming main robe and side robe light beam portions
SHARP KK41 citations93
US6760299B1Jul 6, 2004
Optical disc having pits of different depth formed therein, optical disc device for reproducing the same, and method of reproduction
SHARP KK19 citations92
US6532208B2Mar 11, 2003
Optical recording medium having prepits deeper than grooves
SHARP KK44 citations92
US6438098B1Aug 20, 2002
Optical recording medium, media tracking method and recording/reproducing apparatus
SHARP KK43 citations92
US7072251B2Jul 4, 2006
Optical disc having pits of different depth formed therein, optical disc device for reproducing the same, and method of reproduction
SHARP KK6 citations74
US6728183B1Apr 27, 2004
Optical disk device
SHARP KK12 citations74
US6665235B2Dec 16, 2003
Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium
SHARP KK7 citations74
US6396775B1May 28, 2002
Magneto-optical device and recording/reproducing method
SHARP KK9 citations74
US6261707B1Jul 17, 2001
Magneto-optical recording medium and recording and reproducing method and optical head designed for the magneto-optical recording medium
SHARP KK14 citations74
US6212137B1Apr 3, 2001
Magneto-optical recording medium by magnetic field modulation with the use of smaller magnetic fields
SHARP KK10 citations74
US6042954AMar 28, 2000
Magneto-optical recording medium
SHARP KK7 citations74
US5757734AMay 26, 1998
Magneto-optical recording medium and method for reproducing from same
SHARP KK11 citations74
US5707727AJan 13, 1998
Magneto-optical recording medium
SHARP KK15 citations74
US5631096AMay 20, 1997
Magneto optical memory device
SHARP KK12 citations74
US5615182AMar 25, 1997
Magneto-optical disk and the reproducing method thereof
SHARP KK12 citations74
US5477528ADec 19, 1995
Magneto-optical disk and the reproducing method thereof
SHARP KK9 citations74
US5317555AMay 31, 1994
Optical head device utilizing partially overlapping light spots to read information from a readout layer
SHARP KK15 citations74
US7113460B2Sep 26, 2006
Optical disk having pits of different depths formed therein, optical disk reproducing apparatus for reproducing the optical disk, and method of tracking the optical disk
SHARP KK3 citations63
US6556517B1Apr 29, 2003
Magneto-optical head device having integrated auxiliary lens and magnetic reproducing head and recording and reproducing device using magneto-optical head device
SHARP KK5 citations63
US6487165B1Nov 26, 2002
Optical recording medium
SHARP KK2 citations63
US6272077B1Aug 7, 2001
Magneto-optical recording medium having intermediate layer of in plane magnetization
SHARP KK4 citations63
US5989705ANov 23, 1999
Magneto-optical recording medium
SHARP KK5 citations63
US5657299AAug 12, 1997
Magneto-optical recording medium
SHARP KK3 citations63
US5637394AJun 10, 1997
Magneto-optical recording medium and method of reproducing magneto-optical information using thereof
SHARP KK2 citations63
US5595805AJan 21, 1997
Magneto-optical recording medium
SHARP KK3 citations63
US5305300AApr 19, 1994
Magneto optical storage device using a multi-layer film of Pt/Co laminated sections
SHARP KK4 citations63
US5293359AMar 8, 1994
Magnetic recording and reproducing apparatus having a ferrimagnetic recording medium, a magnetic head and first and second light sources
SHARP KK3 citations63
US7580329B2Aug 25, 2009
Optical recording medium recorded with information in depth direction, and method and apparatus of reproduction therefrom
SHARP KK1 citations52
US6483785B1Nov 19, 2002
Magneto-optical recording method using the relation of beam diameter and an aperture of converging lens
SHARP KK0 citations52