Inventor
YOSHIMOTO KYOSUKE
JP53 patents
Patents
50 patentsUS5592452AJan 7, 1997
Optical disk with logical tracks formed thereon and optical disk drive device
MITSUBISHI ELECTRIC CORP109 citations97
US5319626AJun 7, 1994
Method for rewriting defect management areas on optical disk according to ECMA standard
MITSUBISHI ELECTRIC CORP201 citations97
US6529451B2Mar 4, 2003
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP25 citations96
US6229784B1May 8, 2001
Optical disk having an attribute which designates whether a recording area permits rewriting or not
MITSUBISHI ELECTRIC CORP24 citations96
US5717683AFeb 10, 1998
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP65 citations96
US5004901AApr 2, 1991
Current mirror amplifier for use in an optical data medium driving apparatus and servo-circuit
MITSUBISHI ELECTRIC CORP55 citations94
US5457674AOct 10, 1995
Optical disc recording apparatus
MITSUBISHI ELECTRIC CORP20 citations93
US5251194AOct 5, 1993
Techniques for controlling beam position and focus in optical disk drives
MITSUBISHI ELECTRIC CORP109 citations93
US4689795AAug 25, 1987
Semiconductor laser controller
MITSUBISHI ELECTRIC CORP47 citations93
US5825728AOct 20, 1998
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP17 citations92
US5321675AJun 14, 1994
Pit spacing in the servo field of an optical disk for speed and direction detection and data retrieval
MITSUBISHI ELECTRIC CORP32 citations92
US5070492ADec 3, 1991
Signal decoding apparatus and method
MITSUBISHI ELECTRIC CORP32 citations92
US5063546ANov 5, 1991
Optic disc with servo pattern and apparatus for accessing the optical disc
MITSUBISHI ELECTRIC CORP30 citations92
US5007038AApr 9, 1991
Method and apparatus for producing an accurate error signal in an optical recording medium driver
MITSUBISHI ELECTRIC CORP23 citations92
US5317143AMay 31, 1994
Optical data medium driving apparatus and a servo circuit with normalization processing
MITSUBISHI ELECTRIC CORP41 citations90
US4812726AMar 14, 1989
Servo circuit positioning actuator
MITSUBISHI ELECTRIC CORP25 citations86
US6775220B2Aug 10, 2004
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP8 citations82
US6434099B1Aug 13, 2002
Optical disk having an attribute which designates whether a recording area permits rewriting or not
MITSUBISHI ELECTRIC CORP9 citations82
US6151292ANov 21, 2000
Optical disk having sequentially numbered sectors and logical tracks formed by a series of 2n sectors, and disk drive apparatus for using such an optical disk
MITSUBISHI ELECTRIC CORP12 citations82
US5953309ASep 14, 1999
Optical disk having logical tracks and dummy sectors in each zone, and optical disk drive device for such an optical disk
MITSUBISHI ELECTRIC CORP13 citations82
US5128916AJul 7, 1992
Optical disc with alternating servo patterns and driving apparatus therefor
MITSUBISHI ELECTRIC CORP16 citations82
US5107483AApr 21, 1992
Frequency selective optical data record/regenerate apparatus
MITSUBISHI ELECTRIC CORP20 citations82
US4661942AApr 28, 1987
Control apparatus for information storage and retrieval system
MITSUBISHI ELECTRIC CORP23 citations82
US6745111B2Jun 1, 2004
System and method for presenting information to passengers in conveyance
MITSUBISHI ELECTRIC CORP15 citations81
US7254104B2Aug 7, 2007
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP7 citations74
US6853611B2Feb 8, 2005
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP8 citations74
US6834033B2Dec 21, 2004
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP7 citations74
US6526019B2Feb 25, 2003
Optical disk having a recording area on each side and attribute data designating each recording area as rewriteable or not rewriteable
MITSUBISHI ELECTRIC CORP5 citations74
US5265077ANov 23, 1993
Optical disk storage having reduced power consumption during seeking operations
MITSUBISHI ELECTRIC CORP6 citations74
US5172364ADec 15, 1992
Magneto-optic recording apparatus with controlled magnetic field generation
MITSUBISHI ELECTRIC CORP13 citations74
US5117412AMay 26, 1992
Optical disc with servo pattern providing enhanced reliability of servo clock detection and apparatus for accessing the optical disc
MITSUBISHI ELECTRIC CORP10 citations74
US5481517AJan 2, 1996
Track jump control means for a disk apparatus
MITSUBISHI ELECTRIC CORP9 citations73
US5247509ASep 21, 1993
Disk storage which automatically adjusts to optimum recording/reproducing level
MITSUBISHI ELECTRIC CORP12 citations73
US5272684ADec 21, 1993
Information recording method and information recording apparatus for magneto-optic recording information medium
MITSUBISHI ELECTRIC CORP7 citations72
US6490508B2Dec 3, 2002
System and method for presenting information to passengers in conveyance
MITSUBISHI ELECTRIC CORP8 citations71
USRE34769ENov 1, 1994
Current mirror amplifier for use in an optical data medium driving apparatus and servo-circuit
MITSUBISHI ELECTRIC CORP17 citations71
US5184338AFeb 2, 1993
Optical disc system with improved track jumping operation
MITSUBISHI ELECTRIC CORP8 citations66
US7207051B2Apr 17, 2007
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP2 citations63
US7164641B2Jan 16, 2007
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP2 citations63
US6930965B2Aug 16, 2005
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP1 citations63
US5369628ANov 29, 1994
Magneto-optic recording medium, magneto-optic recording system and magneto-optic recording method
MITSUBISHI ELECTRIC CORP6 citations63
US5197048AMar 23, 1993
Magneto-optic recording medium, magneto-optic recording system and magneto-optic recording method
MITSUBISHI ELECTRIC CORP2 citations63
US4775965AOct 4, 1988
Optical system for recording, reproducing, and/or erasing information
MITSUBISHI ELECTRIC CORP5 citations63
US5438557AAug 1, 1995
Optical disk storage which provides pull-in of focus servo and pull-in of tracking servo
MITSUBISHI ELECTRIC CORP6 citations62
US7924693B2Apr 12, 2011
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP0 citations52
US6633525B2Oct 14, 2003
Optical disk having an attribute which designates whether a recording area permits rewriting or not
MITSUBISHI ELECTRIC CORP0 citations52
US7272356B1Sep 18, 2007
Information delivery system
MITSUBISHI ELECTRIC CORP0 citations51
US5309415AMay 3, 1994
Information recording method for overwriting a magneto-optic recording medium with two intensities of light beams
MITSUBISHI ELECTRIC CORP1 citations51
US7227815B2Jun 5, 2007
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP0 citations49
US7548497B2Jun 16, 2009
Optical disk and optical disk drive device
MITSUBISHI ELECTRIC CORP0 citations41
Showing the top 50 of 53 patents by PatentIndex Score.