Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1996-01-24
1998-01-27
Heinz, A. J.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
G11B 560
Patent
active
057127476
ABSTRACT:
A thin film slider with an on-board multi-layer integrated circuit includes a substrate with an air bearing surface and a substantially parallel upper surface spanned by a deposit end. A magnetic head being formed at the deposit end, positioned to magnetically exchange data with a magnetic recording medium that passes beneath the air bearing surface. The upper surface bears an integrated multi-layer accessory circuit, which may be prepared using the CUBE process. Hence, components and vias of the different circuit layers are attached by interconnections that span the edges of the circuit layers. The accessory circuit preferably includes one or more memory devices, such as a cache memory, a DRAM circuit, an EPROM circuit, or another memory circuit appropriate to the application. In embodiments where the magnetic head is a magnetoresistive ("MR") head, the accessory circuit may also include a pre-amplifier and a sensing circuit to support operation of the MR head. The accessory circuit may also include electrostatic discharge ("ESD") protection circuitry to increase the accessory circuit's resistance to damage caused by ESD.
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Voldman Steven Howard
Wallash Albert John
Heinz A. J.
International Business Machines - Corporation
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