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Single-Track Magnetic Read/Write Head Structure

IP.com Disclosure Number: IPCOM000046270D
Original Publication Date: 1983-Jun-01
Included in the Prior Art Database: 2005-Feb-07

Publishing Venue

IBM

Related People

Authors:
Vinal, AW [+details]

Abstract

Fig. 1 illustrates in plan view, facing a semiconductor substrate 1, the configuration for a magnetic read head for reading vertically recorded information in a magnetic medium. Semiconductor substrate 1 has a diffused emitter 2, two collector contacts 3 and two base contacts 4. A magnetic coupling leg structure 5 couples magnetic flux from surface 6 on a magnetic medium 7 recorded in vertical mode through the coupling legs 5 to the gap in legs 5 in which the emitter 2 is placed. The magnetic transistor, comprising the elements 2, 3, 4, etc., on the semiconductor substrate 1, produces a differential output signal whose polarity and magnitude are controlled by the polarity and magnitude of magnetic field difference applied to the coupling legs 5 at positions A and B, as marked.