Inventor
KOSUGE MINORU
JP15 patents
Patents
15 patentsUS6836830B1Dec 28, 2004
Method of data backup in a computer system and a storage system therefor
HITACHI LTD78 citations97
US5572157ANov 5, 1996
Digital phase-looked loop circuit
HITACHI LTD21 citations92
US5522090AMay 28, 1996
Magnetic tape library system wherein write request to a storage unit to be mounted is redirected to a temporary device, and then transferred to the storage unit at an arbitrary time later when the unit is mounted
HITACHI LTD51 citations92
US5448424ASep 5, 1995
AGC circuit and recording and reproducing apparatus using AGC circuit
HITACHI LTD21 citations92
US5353176AOct 4, 1994
Method of reproducing magnetic recording data and a magnetic storage system using switching between plural heads provided to a track
HITACHI LTD28 citations92
US5353422AOct 4, 1994
Method and system for storing and managing a plurality of information media used by recording/reproducing units
HITACHI LTD22 citations92
US5388016AFeb 7, 1995
Magnetic tape data management method and apparatus
HITACHI LTD37 citations91
US7117249B1Oct 3, 2006
Computer system and data sharing method between computers
HITACHI LTD13 citations84
US6981115B2Dec 27, 2005
Method of data backup in a computer system and a storage system therefor
HITACHI LTD14 citations83
US4716306ADec 29, 1987
Circuit for detecting variation of resistance of a variable-resistance element
HITACHI LTD21 citations82
US5841303ANov 24, 1998
Digital phase-locked loop circuit
HITACHI LTD12 citations73
US5414571AMay 9, 1995
Adaptive equalization circuit for magnetic recording apparatus having high error immunity
HITACHI LTD18 citations73
US5060090AOct 22, 1991
Automatic storage system and method for information recording media
HITACHI LTD12 citations70
US5521769AMay 28, 1996
Magnetic tape drive with displaceable head capable of a re-try operation
HITACHI LTD6 citations62
US5500775AMar 19, 1996
Data recording and reproducing apparatus
HITACHI LTD6 citations62