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US 8,619,526 B1Granted
Offset loop for wobble
AssigneeMarvell International Ltd.
InventorMats Oberg
Life of this patent
Estimating the term…
Abstract
Aspects of the disclosure can provide a method for generating an offset correction signal with a reduced circuit footprint. The method can include converting samples of a wobble signal into digital values having a reduced number of bits, integrating the digital values having the reduced number of bits over a specified time interval to determine an error signal, and generating an offset correction signal based on the determined error signal.
Claims20
A method for generating an offset correction signal, comprising:
- converting samples of a first signal into digital values represented by a first resolution;
- reducing the first resolution down to a second resolution;
- integrating the digital values represented by the second resolution over a time interval to determine a second signal;
- and
- generating an offset correction signal based on the second signal.
2 more elements
An apparatus for generating an offset correction signal, comprising:
- a digitalization module configured to convert samples of a first signal into digital values represented by a first resolution;
- a slice module configured to reduce the first resolution down to a second resolution;
- an offset detector configured to integrate the digital values represented by the second resolution over a time interval to determine a second signal;
- and
- an offset control unit configured to generate an offset correction signal based on the second signal.
2 more elements
A recording system, comprising:
- a tracking apparatus configured to generate a first signal based on a track on a storage medium;
- a digitalization module configured to convert samples of the first signal into digital values represented by a first resolution;
- a slice module configured to reduce the first resolution down to a second resolution;
- an offset detector configured to integrate the digital values represented by the second resolution over a time interval to determine a second signal;
- an offset control unit configured to generate an offset correction signal based on the second signal;
- an offset correction module configured to correct the first signal with the offset correction signal;
- and
- a recording apparatus that records data on the track of the storage medium based on the corrected first signal.
5 more elements
Dependencies are inferred from the claim text.