Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier
Patent
1995-03-08
1997-07-22
Psitos, Aristotelis M.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of the amplifier
360 46, 360 61, 360 68, G11B 509, G11B 1512, G11B 502
Patent
active
056508840
ABSTRACT:
A recording and reproducing apparatus of the present invention has a magnetic head used for both recording and reproduction. To perform the changeover between recording and reproduction in a short period of time, a first recording amplifier for supplying a recording signal is provided at one end of the magnetic head, a second recording amplifier for supplying a recording signal of a phase opposite to that of the recording signal supplied to the one end of the magnetic head is provided at the other end of the magnetic head, and a reproduction input amplifier connected to the both ends of the magnetic head is provided. The same bias voltages are supplied through first and second resistors connected to the both ends of the magnetic head.
REFERENCES:
patent: 4713700 (1987-12-01), Kuwahara et al.
patent: 4965681 (1990-10-01), Takimoto
patent: 5168397 (1992-12-01), Iwamura et al.
patent: 5204790 (1993-04-01), Yang
patent: 5357379 (1994-10-01), Gower
Kawamura Akinobu
Murakami Sadakazu
Sasaki Hiroyuki
Tsuji Yasuhiko
Neal Regina Y.
Psitos Aristotelis M.
Rohm & Co., Ltd.
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