Minoru Kosuge

Method of data backup in a computer system and a storage system therefor

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

Method of reproducing magnetic recording data and a magnetic storage system using switching between plural heads provided to a track

Magnetic tape data management method and apparatus

Circuit for detecting variation of resistance of a variable-resistance element

AGC circuit and recording and reproducing apparatus using AGC circuit

Adaptive equalization circuit for magnetic recording apparatus having high error immunity

Method and system for storing and managing a plurality of information media used by recording/reproducing units

Digital phase-looked loop circuit

Digital phase-locked loop circuit