Browse Prior Art Database

Magnetoresistive Alignment Head

IP.com Disclosure Number: IPCOM000085952D
Original Publication Date: 1976-Jun-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Mazzeo, NJ: AUTHOR

Abstract

It is known to utilize two magnetic heads for developing a zero error voltage signal indicative of precise alignment, where deviations from precise alignment provide nonzero signals. A specific circuit arrangement is suggested for use with magnetoresistive heads which provides the precise alignment feature.

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Magnetoresistive Alignment Head

It is known to utilize two magnetic heads for developing a zero error voltage signal indicative of precise alignment, where deviations from precise alignment provide nonzero signals. A specific circuit arrangement is suggested for use with magnetoresistive heads which provides the precise alignment feature.

As illustrated in the circuit diagram, if a center tapped magnetoresistive stripe is employed, currents I1 and I2 through each half of the stripe are opposite and any bit detected will cancel only when the head is aligned parallel to the stored bit. When in alignment, the tapped magnetoresistive stripe is operated as a single stripe in a normal detection manner.

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