Patent ID: 6765738
Filing Date: 2004-07-20
Classification: G11B

Abstract:
A magnetic reproducing apparatus, comprising:a magneto-resistance effect type magnetic head element mounted on a rotary drum for reading a magnetic signal recorded on a magnetic recording medium in a helical scan recording system; and wear detecting means for detecting a degree of wear of said magnetic head element from a value of resistance of said magnetic head element in an absence of an external magnetic field, said value of resistance of the magnetic head element being measured when the magnetic head element is not reading the magnetic signal recorded on the magnetic recording medium; wherein said wear detecting means transmits a signal indicative of the value of resistance of said magnetic head element outside the apparatus via a rotary transformer after converting it into a frequency proportional to the value of resistance as an AC signal, and wherein the wear detecting means converts and outputs the AC signal transmitted via the rotary transformer to a signal indicative of the value of resistance of the magnetic head element.