Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier
Patent
1988-01-15
1989-07-04
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of the amplifier
360 46, G11B 502, G11B 509
Patent
active
048455768
ABSTRACT:
A magnetic recording/reproduction apparatus of the invention has a magnetic head for reading a vertical magnetically recorded signal, an inplane magnetic recorded signal or a magnetic recorded signal having both a vertical magnetic component and an inplane magnetic component and for supplying a reproduced signal, a first analog signal converting circuit for converting the reproduced signal into an analog inplane reproduced signal when the reproduced signal is a vertical reproduced analog signal, a second analog signal converting circuit for bypassing an inplane analog reproduced signal when the reproduced signal is the inplane reproduced analog signal, and a third analog signal converting circuit for converting the reproduced signal into an inplane reproduced analog signal when the reproduced signal is the inplane reproduced analog signal. The circuits are switched to operate selectively in accordance with the type of signals reproduced from a magnetic recording medium.
REFERENCES:
patent: 3588380 (1971-06-01), Horlander et al.
patent: 4297730 (1981-10-01), Kadowaki et al.
"The Effect of the Angular Dependence of the Particle Nucleation Field on the Magnetic Recording Process"-by H. N. Bertram, IEEE Transactions on Magnetics, vol. May 20, #6, Nov. 1984.
"Combined Longitudinal & Vertical Magnetic Recording Head", by A. Hongland, IBM TDB, vol. 20, #8, 1/78.
"Phase Equalization for Perpendicular Recording", by B. Langland, IEEE Transactions on Magnetics, Mag. 18, #6, 11/82.
Grundig Technische Informationen, vol. 31, #3, 1984.
Japanese Patent Application No. 58-119336; Waveform Equalizer; H. Suzuki et al., (Toshiba).
Japanese Patent Disclosure (Kokai) No. 60-10456 published on Jan. 19, 1985.
Kusunoki Masahiro
Ohashi Hiroshi
Okamura Hiroshi
Saito Toshiya
Canney Vincent P.
Kabushiki Kaisha Toshiba
Toshiba Computer Engineering Corporation
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