Inventor
OHTAKE MASATOSHI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “OHTAKE MASATOSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
25 patentsUS6236635B1May 22, 2001
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD93 citations99
US7012871B2Mar 14, 2006
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD40 citations96
US6529467B2Mar 4, 2003
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD25 citations96
US6343056B2Jan 29, 2002
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD23 citations96
US4866688ASep 12, 1989
Composite tracking servo system for optical disc apparatus with track offset correction
HITACHI LTD111 citations96
US4748609AMay 31, 1988
Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset
HITACHI LTD119 citations96
US4707816ANov 17, 1987
Method and apparatus for composite wobbled and push-pull tracking servo system
HITACHI LTD98 citations96
US4759628AJul 26, 1988
Wavelength scanning interferometry and interferometer employing laser diode
HITACHI LTD25 citations93
US6282611B1Aug 28, 2001
Digital information system, digital audio signal processor and signal converter
HITACHI LTD43 citations92
US4785442ANov 15, 1988
Light spot position control system and method by sampling servo
HITACHI LTD38 citations92
US4199820AApr 22, 1980
Random access storage apparatus with a movable recording medium
HITACHI LTD46 citations92
US5594680AJan 14, 1997
Noise reduced contactless parallel data transfer device and method thereof
HITACHI LTD24 citations89
US6608806B2Aug 19, 2003
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD8 citations82
US4949325AAug 14, 1990
Method and associated apparatus and medium for optical recording and reproducing information
HITACHI LTD22 citations82
US7907490B2Mar 15, 2011
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD2 citations74
US4872152AOct 3, 1989
Light spot position control system and method by sampled servo
HITACHI LTD18 citations74
US5001409AMar 19, 1991
Surface metrological apparatus
HITACHI LTD12 citations73
US6842415B2Jan 11, 2005
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD1 citations63
US4847822AJul 11, 1989
Optical information recording and reproducing apparatus with tracking control by sampling
HITACHI LTD4 citations63
US7911910B2Mar 22, 2011
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7907491B2Mar 15, 2011
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7852727B2Dec 14, 2010
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7684301B2Mar 23, 2010
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7417933B2Aug 26, 2008
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52
US7042823B2May 9, 2006
Information recording method and apparatus with suppressed mark edge jitters
HITACHI LTD0 citations52