Apparatus using inclined sensor for detecting relative displacement

摘要

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.