Circuit for selectively switching read signals from a multiple m

Details Circuit for selectively switching read signals from a multiple m Circuit for selectively switching read signals from a multiple m

1992-03-13

1994-03-08

Hajec, Donald

Boots, shoes, and leggings

Antislipping devices

Calks

360 61, G11B 502

Patent

active

052932788

ABSTRACT:
A circuit for selective switching through of read signals of a multiple magnetic head in a magnetic layer memory, wherein each magnetic system of a multiple magnetic head is associated with a preamplifier which has spatially separated input and final stages, the input stage being located directly on the multiple magnetic head and connected to the final stage by means of a flexible connecting line, the final stage being spatially associated with a read channel, the final stage having switching means for the selective closing of a current path between the final stage and the associated input stage by means of a selection signal, the input stage being so constructed to be in an idle state for as long as the associated final stage is not activated. Preferably, outputs of all the final stages are connected in parallel and coupled into the read channel across an output stage constructed as a differential voltage amplifier.

REFERENCES:
patent: 3505662 (1970-04-01), Hibner
patent: 4523238 (1985-06-01), Keel et al.
patent: 4768111 (1988-08-01), Kranabetter

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