Electricity: measuring and testing – Magnetic – Displacement
Patent
1984-06-11
1987-03-10
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
Displacement
324252, 324260, 338 32R, G01B 714
Patent
active
046493425
ABSTRACT:
An apparatus for detecting a relative displacement of a magnetic record medium and a magnetic sensor a method for manufacturing the above apparatus are disclosed. A magnetization pattern is recorded on the magnetic record medium and the relative displacement is detected by means of at least two magnetic detectors arranged on a common substrate with a given pitch. The common substrate is relatively inclined with respect to an arranging direction of the magnetization pattern to derive a desired phase difference between output signals generated from respective two magnetic detectors. The two magnetic detectors are connected into a bridge circuit to derive a detection output signal representing only the relative displacement without being affected by a noise magnetic field.
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Edmonds Warren S.
Strecker Gerard R.
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