Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1984-06-28
1987-03-03
Cardillo, Raymond F.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
369 14, 369126, 360110, G11B 531, G11B 1300
Patent
active
046480870
ABSTRACT:
A capacitive variation sensor includes one or more elements providing inductive reactance in the form of thin film coils. This enables a capacitive variation sensor to be integrated on a substrate along with a thin film magnetic read/write head. One element of the capacitive variation sensor is a sensing electrode, and in some embodiments of the invention a dedicated sense electrode can be eliminated by employing the pole tips of the thin film magnetic read/write head as the sense electrode.
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IBM TDB, vol. 23, No. 3, "Optically Read and Servoed Direct--Access Storage Device", Workman, 8/80, pp. 1201-1203.
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IERE Conference Proceeding, No. 423, "Embossed Servo Techniques for Floppy Discs", Thompson et al., 1979, pp. 321-327.
Scranton Robert A.
Thompson David A.
Cardillo Raymond F.
Garland Steven R.
International Business Machines - Corporation
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