Servo pattern read-back signal processing for storage devices
AssigneeHewlett-Packard Development Company, L.P.
InventorDonald J. Fasen
Life of this patent
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Abstract
Servo pattern read-back signal processing for storage devices is described. In an example, a method of processing a read-back signal derived from a servo pattern on a storage medium in a storage device includes differentiating the read-back signal in an analog domain to produce a differentiated signal; and converting the differentiated signal into digital samples.
Claims15
A method of processing a read-back signal derived from a servo pattern on a storage medium in a storage device, comprising:
- differentiating the read-back signal in an analog domain to produce a differentiated signal;
- and
- converting the differentiated signal into digital samples.
An apparatus to process a read-back signal derived from a servo pattern on a storage medium in a storage device, comprising:
- a differentiator to receive the read-back signal and to produce a differentiated signal;
- and
- an analog-to-digital converter (ADC), coupled to the differentiator, to convert the differentiated signal into digital samples.
A storage device, comprising:
- a head having a servo reader to generate a read-back signal from a servo pattern on a storage medium;
- a differentiator, coupled to the servo reader, to produce a differentiated signal from the read-back signal;
- an analog-to-digital convertor (ADC), coupled to the differentiator, to convert the differentiated signal into digital samples;
- and
- a digital signal processor, coupled to the ADC, to obtain position information for the servo reader relative to the servo pattern from the digital samples.
Dependencies are inferred from the claim text.