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US 5,671,106 AGranted
Matrix magnetic recording/reading head
AssigneeThomson-CSF
InventorJean-Claude Lehureau
Life of this patent
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Abstract
A magnetic head including a first induction conductor coupled to a second conductor which is coupled into a closed magnetic circuit having a magnetic flux induction coil supplied with a pulsed or alternating current. Instead of a coil, therefore, only the first induction conductor is magnetically coupled with the head. The magnetic head allows for implementation of high density heads with matrix control and can be used in magnetic recording/reading applications.
Claims11
A magnetic recording/reading head comprising:
- a substrate made of magnetic material and having first and second faces;
- at least one first magnetic circuit covered by a first layer of material of high magnetic permeability, having a gap forming a magnetic head, and including,
- at least one first conductor located on the first face of the substrate;
- and
- at least one second magnetic circuit, including,
- at least one first control conductor coupled to the at least one first conductor and covered by a second layer of material having high magnetic permeability;
- at least one first winding supplied with a pulsed or alternating current for producing a first magnetic flux in the at least one second magnetic circuit;
- the first magnetic flux producing a current flowing in a circuit formed by the at least one first conductor coupled to the at least one first control conductor;
- and
- the current flowing in the at least one first conductor inducing a second magnetic flux in the first magnetic circuit.
7 more elements
Dependencies are inferred from the claim text.