Inventor
MARUYAMA SUMITAKA
JP23 patents
⚠️ This page may combine multiple inventors who share the name “MARUYAMA SUMITAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
TOSHIBA KK
20 patentsUS7142484B2Nov 28, 2006
Optical information processing system using optical aberrations and information medium having recording layer protected by transparent layer having thickness irregularity
TOSHIBA KK24 citations91
US6937544B2Aug 30, 2005
Optical disk unit for recording or reproducing information
TOSHIBA KK17 citations91
US7345984B2Mar 18, 2008
Information storage medium, recording method, reproducing method, and reproducing apparatus
TOSHIBA KK9 citations84
US7224645B2May 29, 2007
Optical information processing system using optical aberrations and information medium having recording layer protected by transparent layer having thickness irregularity
TOSHIBA KK16 citations83
US7924691B2Apr 12, 2011
Information storage medium, recording method, and recording apparatus
TOSHIBA KK4 citations74
US7426167B2Sep 16, 2008
Information storage medium, recording method, reproducing method, and reproducing apparatus
TOSHIBA KK2 citations63
US7411888B2Aug 12, 2008
Information storage medium, recording method, reproducing method, and reproducing apparatus
TOSHIBA KK3 citations63
US7352683B2Apr 1, 2008
Information storage medium, recording method, reproducing method, and reproducing apparatus
TOSHIBA KK2 citations63
US7352671B2Apr 1, 2008
Storage medium, reproducing method, and recording method
TOSHIBA KK3 citations63
US7342866B2Mar 11, 2008
Optical disc and its information recording method and apparatus
TOSHIBA KK3 citations63
US7283447B2Oct 16, 2007
Optical disc and optical disc apparatus
TOSHIBA KK5 citations62
US7668064B2Feb 23, 2010
Optical pickup unit and information recording/reproduction apparatus
TOSHIBA KK4 citations61
US7224653B2May 29, 2007
Optical disk unit capable of restraining changes in light quantity
TOSHIBA KK3 citations61
US6925046B2Aug 2, 2005
Optical head device and optical disk unit capable of stable signal reproduction
TOSHIBA KK5 citations61
US6781928B2Aug 24, 2004
Optical head and optical disk apparatus
TOSHIBA KK3 citations61
US8599675B2Dec 3, 2013
Information storage medium, recording method, and recording apparatus
TOSHIBA KK0 citations52
US7408858B2Aug 5, 2008
Information storage medium including a system lead-in area, a connection area, a data lead-in area and a data area
TOSHIBA KK0 citations52
US7366070B2Apr 29, 2008
Storage medium including a burst cutting area (BCA)
TOSHIBA KK0 citations52
US7352682B2Apr 1, 2008
Storage medium including a burst cutting area (BCA)
TOSHIBA KK0 citations52
US7274630B2Sep 25, 2007
Layer discriminating focus control apparatus, optical disk apparatus, and methods therefore
TOSHIBA KK1 citations51
WATABE KAZUO
3 patentsUS8582414B2Nov 12, 2013
Information storage medium, recording method, and recording apparatus
WATABE KAZUO0 citations51
US8582399B2Nov 12, 2013
Information storage medium, recording method, and recording apparatus
WATABE KAZUO0 citations51
US8547816B2Oct 1, 2013
Information storage medium, recording method, and recording apparatus
WATABE KAZUO0 citations51