Dynamic magnetic information storage or retrieval – General processing of a digital signal – Head amplifier circuit
Reexamination Certificate
2005-06-07
2005-06-07
Faber, Alan T. (Department: 2651)
Dynamic magnetic information storage or retrieval
General processing of a digital signal
Head amplifier circuit
C360S068000, C360S061000, C360S055000
Reexamination Certificate
active
06903891
ABSTRACT:
A write driver for use with a magnetic recording head includes a photoconductive switch that is positioned adjacent a magnetic recording head for switching current waveforms. Both light and a DC voltage are applied to the photoconductive switch to switch the applied current waveforms. The write driver further includes means for writing to a storage medium in response to current waveforms switched by the photoconductive switch. The write driver may also include a suspension that supports at least one photoconductive switch, DC conductors for supplying a DC voltage, means for supplying light, and recording head means for writing to a storage medium.
REFERENCES:
patent: 4446425 (1984-05-01), Valdmanis et al.
patent: 4482863 (1984-11-01), Auston et al.
patent: 6081499 (2000-06-01), Berger et al.
patent: 6134207 (2000-10-01), Jerman et al.
patent: 6317280 (2001-11-01), Nakajima et al.
patent: 6463190 (2002-10-01), Kato et al.
patent: 6687205 (2004-02-01), Huber
patent: 2003/0053258 (2003-03-01), Dunn et al.
D. H. Auston, “Picosecond Optoelectronic Switching and Gating in Silicon,”Applied Physics Letters, vol. 26, No. 3, Feb. 1, 1975, pp. 101-103.
J. A. Valdmanis et al., “Picosecond Electro-Optic Sampling System,”Applied Physics Letters, vol. 41, No. 3, Aug. 1, 1982, pp. 211-212.
G. Burns,Solid State Physics, Academic Press, San Diego, 1985, pp. 288-289.
F. E. Doany et al., “Carrier Lifetime Versus Ion-Implantation Dose in Silicon on Sapphire,”Applied Physics Letters, vol. 50, No. 8, Feb. 23, 1987, pp. 460-462.
M. E. Dunham et al., “Saturation Behavior of Silicon Auston Switches,”Journal of Applied Physics, vol. 66, No. 1, Jul. 1, 1989, pp. 413-418.
D. R. Dykaar et al., “Ultrafast Coplanar Air-Transmission Lines,”Applied Physics Letters, vol. 57, No. 11, Sep. 10, 1990, pp. 1123-1125.
Y. Chen et al., “375-GHz-Bandwidth Photoconductive Detector,”Applied Physics Letters, vol. 59, No. 16, Oct. 14, 1991, pp. 1984-1986.
U. D. Keil et al., “Generation of Ultrashort Electrical Pulses With Variable Pulse Widths,”Applied Physics Letters, vol. 66, No. 13, Mar. 27, 1995, pp. 1629-1631.
R. G. Decorby et al., “Large (50 μm)2Metal-Semiconductor-Metal Photodetectors With 18 GHz Bandwidth at 3 V Bias; Reduction of Hole Pileup,”Applied Physics Letters, vol. 73, No. 2, Jul. 13, 1998, pp. 196-198.
M. Stellmacher et al., “Photoconductivity Investigation of the Electron Dynamics in GaAs Grown at Low Temperature,”Applied Physics Letters, vol. 74, No. 9, Mar. 1, 1999, pp. 1239-1241.
Clinton Thomas William
Covington Mark William
Crawford Thomas McLendon
Faber Alan T.
Lenart, Esq. Robert P.
Pietragallo Bosick & Gordon
Seagate Technology LLC
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