Method and apparatus for offset and gain correction
AssigneeMarvell World Trade Ltd.
InventorsJin Xie, Bin Ni, Mats Oberg
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Abstract
Aspects of the disclosure provide a signal processing circuit that has fast response time to sudden profile changes in an electrical signal. The signal processing circuit includes a processing path configured to process an electrical signal that is generated in response to reading data on a storage medium, and a feed-forward correction module. The feed-forward correction module is configured to detect a profile variation based the electrical signal in a time window, and correct the electrical signal in the time window based on the detected profile variation.
Claims20
A signal processing circuit, comprising:
- a processing path configured to process an electrical signal that is generated in response to reading data on a storage medium;
- and
- a feed-forward correction module configured to detect a profile variation based on the electrical signal in a time window, and correct the electrical signal in the time window based on the detected profile variation.
A method for signal processing, comprising:
- detecting a profile variation based on an electrical signal in a time window, the electrical signal being generated in response to reading data on a storage medium;
- and
- correcting the electrical signal in the time window based on the detected profile variation.
An apparatus for accessing a storage medium, comprising:
- a pick-up unit configured to generate an electrical signal in response to reading data on the storage medium;
- a processing path configured to process the electrical signal;
- and
- a feed-forward correction module configured to detect a profile variation based the electrical signal in a time window, and correct the electrical signal in the time window based on the detected profile variation.
Dependencies are inferred from the claim text.