Dynamic magnetic information storage or retrieval – General processing of a digital signal – Head amplifier circuit
Patent
1994-11-08
1998-01-27
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Head amplifier circuit
360113, G11B 509, G11B 5127
Patent
active
057127395
ABSTRACT:
A magnetic disk drive system for writing data into a disk-shaped magnetic medium and reading data stored therein, comprises a first terminal, a second terminal, and at least one third terminal, a composite head unit including an inductive write head and at least one magnetoresistive read head which are connected in series between the first and second terminals, and at least one common connection node connected to the at least one third terminal, and a driving circuit connected to the first through third terminals. The driving circuit includes a write circuit for supplying a write current to the write head, a read circuit for supplying a sense current to the read head to generate a read signal, and a plurality of switches for connecting the write circuit to the write head and electrically disconnecting the read circuit from the composite head unit and the write circuit during writing, and for connecting the read circuit to the read head and electrically disconnecting the write circuit from the composite head unit and the read circuit during reading.
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patent: 5132852 (1992-07-01), Price, Jr.
patent: 5311377 (1994-05-01), Mitsuhashi et al.
patent: 5416645 (1995-05-01), Fukuyama
patent: 5430584 (1995-07-01), Petersen
patent: 5434717 (1995-07-01), Yoshinaga et al.
Akiyama Junichi
Goto Nobuyasu
Nakamura Norio
Ohinata Yusuke
Kabushiki Kaisha Toshiba
Neal Regina Y.
Psitos Aristotelis M.
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