Multi-tapped coil having tapped segments cascaded for amplification for improving signal-to-noise ratio
AssigneeRead-Rite Corporation
InventorEric R. Katz
Life of this patent
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Abstract
A magnetic head includes an inductive coil electrically partitioned into a plurality of segments by a plurality of conductive leads. During the data reading mode, magnetic flux changes emanating from a record medium are sensed by the magnetic head. The inductive coil transduces the magnetic flux changes into electrical signals at the conductive leads. The signals are amplified by serially cascading the plurality of segments and the signals are then fed into amplifiers. During the data writing mode, the electrical signal is applied to two of the conductive leads via a data writing amplifier. The inductive coil converts the electrical signal into changes in magnetic flux for recording onto a magnetic medium.
Claims10
A thin-film magnetic head for transducing magnetic flux sensed from a record medium into electrical signals during a data reading mode, comprising:
- an electrical coil;
- and
- a plurality of conductive leads electrically connected to said coil, said conductive leads being disposed at preselected locations along said coil for electrically partitioning said coil into a plurality of segments;
- so that during the data reading mode, magnetic flux changes from the record media is intercepted by said magnetic head, and said coil converts the magnetic flux changes into electrical signals at said conductive leads, whereby the electrical signals are amplified by cascading said segments serially via said conductive leads.
A thin-film magnetic head for converting changes in magnetic flux from a record medium into electrical signals during a data reading mode, and for converting electrical signals into changes in magnetic flux to be recorded onto the record medium during a data writing mode, comprising:
- a coil;
- and
- a plurality of conductive leads electrically connected to said coil, sail conductive leads being disposed at preselected locations along said coil for electrically partitioning said coil into a plurality of segments;
- wherein during the data reading mode, magnetic flux changes from the record medium are sensed by the magnetic head, and said coil transduces the magnetic flux changes into electrical signals at said conductive leads, and said segments are cascaded serially via said electrical leads for amplifying the transduced electrical signals, and wherein during the data writing mode, electrical signals are applied to two of said conductive leads so that said coil converts the applied electrical signals into changes in magnetic flux for recording data onto said medium.
A thin-film magnetic head for converting changes in magnetic flux from a record medium into electrical signals during a data reading mode, comprising:
- a coil;
- and
- conductive means electrically connected to said coil, said conductive means being disposed at preselected locations along said coil for electrically partitioning said coil into a plurality of segments;
- wherein during the data reading mode, magnetic flux changes from the record media are sensed by the magnetic head, and said coil transduces the magnetic flux changes into electrical signals at said conductive means, so that by cascading said segments serially via said electrical means the electrical signals are amplified.
Dependencies are inferred from the claim text.