Dynamic magnetic information storage or retrieval – General processing of a digital signal – Head amplifier circuit
Patent
1988-09-19
1990-09-04
Canney, Vincent P.
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Head amplifier circuit
G11B 509
Patent
active
049549030
ABSTRACT:
A digital signal reproduction apparatus includes a first differential circuit for differentiating a reproduction signal reproduced from a recording medium. This differential circuit outputs a first order differential signal and second differential circuit differentiates the first order differential signal of the reproduction signal and outputs a second order differential signal. A comparator compares the second order differential signal with a predetermined level to produce a window signal. A peak detecting circuit detects zero-cross points in the first order differential signal and outputs a peak detecting signal. A gate gates the peak detecting signal with the window signal to output a reproduction data signal.
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patent: 4480276 (1984-10-01), Batey et al.
patent: 4686586 (1987-08-01), Dutcher
patent: 4751591 (1988-06-01), Fujimoto
patent: 4764916 (1988-08-01), Mori
Laid-Open Japanese Patent Application No. 62-124645 dated Jun. 5, 1987.
Laid-Open Japanese Patent Application No. 62-129942 dated Jun. 12, 1962.
Laid-Open Japanese Patent Application No. 62-12924, English Patent Publication 1,005,702.
Deguchi Toshihisa
Fuji Hiroshi
Fujiwara Tsuneo
Kojima Kunio
Terashima Shigeo
Canney Vincent P.
Sharp Kabushiki Kaisha
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