Inventor
SHIMONOU SHIGERU
JP19 patents
⚠️ This page may combine multiple inventors who share the name “SHIMONOU SHIGERU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NEC CORP
14 patentsUS5046058ASep 3, 1991
Track access apparatus having a learning control for positioning a transducer for a disc-shaped recording mechanism
NEC CORP23 citations92
US4951274AAug 21, 1990
Magneto-optical head capable of separating beams for reading recorded information and servo information by use of one optical element
NEC CORP44 citations92
US4648085AMar 3, 1987
Optical information recording and reading apparatus with error correction
NEC CORP28 citations92
US4615023ASep 30, 1986
Beam access apparatus for optical disc system
NEC CORP40 citations92
US5990651ANov 23, 1999
Stepping motor drive apparatus and stepping motor
NEC CORP39 citations91
US5105399AApr 14, 1992
Magneto-optical means for reading disks by comparing signals at leading and trailing edges of laser beam
NEC CORP19 citations73
US5020044AMay 28, 1991
Head positioning system for use in information recording/reproducing device with means for deriving track crossing signal from tracking error signal
NEC CORP20 citations73
US7136339B2Nov 14, 2006
Positioning control apparatus and method capable of reducing relative position error without increasing gain and frequency band of transfer characteristics of control system
NEC CORP7 citations72
US7471617B2Dec 30, 2008
Optical disc medium having extended record control data areas, optical disc apparatus using the same, and data recording method on the same
NEC CORP3 citations63
US7551530B2Jun 23, 2009
Optical disc recording system
NEC CORP4 citations62
US5737282AApr 7, 1998
Optical disk apparatus and track access control method utilizing positioned shift between scanning beams
NEC CORP3 citations62
US5293364AMar 8, 1994
Track access control device for an optical disk drive
NEC CORP5 citations62
US5253238AOct 12, 1993
Arrangement for producing precise tracking error signal for optical disk device
NEC CORP5 citations62
US5859817AJan 12, 1999
Optical disk apparatus and track access control method for optical disk apparatus for reducing the relative position shift between two beam spots which are emitted through two objective lenses
NEC CORP1 citations51