Inventor
YASUKAWA TAKAKIYO
JP19 patents
⚠️ This page may combine multiple inventors who share the name “YASUKAWA TAKAKIYO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
6 patentsUS7130256B2Oct 31, 2006
Mark-length information recording system
HITACHI LTD10 citations73
US8004957B2Aug 23, 2011
Recording and reproducing method and recording and reproducing apparatus
HITACHI LTD1 citations51
US7391695B2Jun 24, 2008
Information recording systems and methods utilizing controlled mark-length
HITACHI LTD0 citations51
US7355941B2Apr 8, 2008
Information recording method and optical disk apparatus for recording information on a recording-type optical disk
HITACHI LTD0 citations41
US7649821B2Jan 19, 2010
Disk discriminating method and optical disk apparatus
HITACHI LTD0 citations40
US7885160B2Feb 8, 2011
Method of recording information on and reproducing information from optical disk and apparatus for the same
HITACHI LTD0 citations39
HITACHI LG DATA STORAGE INC
3 patentsUS8908484B2Dec 9, 2014
Recording/reproducing device and optical disk library device
HITACHI LG DATA STORAGE INC1 citations52
US7944790B2May 17, 2011
Optical disc apparatus and data recording method thereof
HITACHI LG DATA STORAGE INC0 citations49
US9105274B2Aug 11, 2015
Optical disc inspection method in optical disc library apparatus and optical disc library apparatus
HITACHI LG DATA STORAGE INC0 citations40