Shorted dual element magnetoresistive reproduce head exhibiting high density signal amplification

Claim 1

A magnetic head assembly for detecting magnetically recorded signals comprising: a) a first rectangular thin film magnetoresistive element having a first long dimension and a first short dimension, b) a second rectangular thin film magnetoresistive element having a second long dimension and a second short dimension, wherein said first long dimension equals said second long dimension and said first short dimension equals said first short dimension, whereby said first and said second rectangular thin film magnetoresistive elements are geometrically congruent, c) a planar non-magnetic thin film spacer having a third long dimension less than said first and second long dimensions, said third long dimension terminating in first and second longitudinal ends, and said spacer being in contact with said magnetoresistive elements for separation of said first and said second magnetoresistive elements, said spacer further comprising an electrically insulating planar mid-portion, and first and second electrically conductive stubs at said first and second longitudinal ends respectively of said third long dimension, whereby said first and second electrically conductive stubs at said longitudinal ends of said spacer provide electrical shorting between said first and said second magnetoresistive elements, d) means for longitudinal concurrent current flow in said first and second elements, whereby said elements mutually magnetically bias each other, e) means for coupling magnetic signal fields from said magnetically recorded signals to said first and said second rectangular magnetoresistive elements along said short dimensions of said first and second magnetoresistive elements, whereby said first and said second magnetoresistive elements are concurrently responsive to said signal fields, and f) means for detecting the resistance change in said magnetoresistive elements in response to said signal fields.