Varying data reader response
First Claim
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1. Reader apparatus to read data magnetically stored on a storage medium, the apparatus comprising a sense structure to change resistance in response to a proximity of a stored magnetic field, and a variable magnetic field biasing arrangement to vary an active response length of the sense structure.
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Abstract
A reader apparatus is disclosed to read data magnetically stored on a storage medium. The apparatus has a sense structure to change resistance in response to a proximity of a stored magnetic field, and a variable magnetic field biasing arrangement to vary an active response length of the sense structure.
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Citations
19 Claims
- 1. Reader apparatus to read data magnetically stored on a storage medium, the apparatus comprising a sense structure to change resistance in response to a proximity of a stored magnetic field, and a variable magnetic field biasing arrangement to vary an active response length of the sense structure.
- 13. A method of reading data on a magnetic storage medium using changes in a sense current passing along a sense structure during relative movement of the sense structure and the stored data, the method comprising setting a response length of the sense structure using a magnetic field applied by an electromagnet along the sense structure.
- 16. A magnetic data storage device comprising a read element to read data stored as magnetic data elements on a medium, and adjuster apparatus to adjust an extent of a region of the read element that responds magnetically to the stored data, the adjuster apparatus comprising a variable magnetic biasing arrangement.
Specification