Inventor
SEKINE TAKEHIKO
JP13 patents
⚠️ This page may combine multiple inventors who share the name “SEKINE TAKEHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
9 patentsUS5229986AJul 20, 1993
Data recording/reproducing device
HITACHI LTD44 citations95
US6442118B1Aug 27, 2002
Information recording and reproducing apparatus having semiconductor laser drive circuitry in its pickup
HITACHI LTD38 citations92
US5523991AJun 4, 1996
Data recording/reproducing device
HITACHI LTD34 citations92
US6954410B2Oct 11, 2005
Information recording and reproducing apparatus for updating the waveform of a laser based on position information
HITACHI LTD10 citations74
US5519683AMay 21, 1996
Information recording/reproducing device and method in which a resynchronization signal is inserted into the data at predetermined intervals
HITACHI LTD6 citations73
US5383171AJan 17, 1995
Information recording/reproducing device and method for recording/reproducing information on a recording medium using accurate synchronization in a data area in which coded data is stored
HITACHI LTD10 citations73
US6295258B1Sep 25, 2001
Method for recording and reproducing information by pre-pits detection
HITACHI LTD5 citations72
US7376057B2May 20, 2008
Disk recording apparatus and disk recording method
HITACHI LTD2 citations60
US7349302B2Mar 25, 2008
Optical disk recording apparatus and optical disk recording method
HITACHI LTD0 citations41