Method to apply user data for read channel training and adaptation in hard disk drive applications
AssigneeSK hynix memory solutions inc.
InventorsKwok W. Yeung, Xin-Ning Song
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Abstract
Calibrating a read channel is disclosed. Previously written user data is read from an auxiliary memory. The previously written user data is processed through a plurality of write channel stages. The output of at least one of the plurality of write channel stages is compared to the output of a corresponding read channel stage to generate an error signal.
Claims20
A system for calibrating a read channel, including:
- an auxiliary memory that stores previously written user data;
- a plurality of write channel stages that process the previously written user data from the auxiliary memory;
- and
- an error processor that generates an error signal at least in part by comparing an output of at least one of the plurality of write channel stages to an output of a corresponding read channel stage, wherein the corresponding read channel stage is calibrated based at least in part on the generated error signal.
A method of calibrating a read channel, including:
- reading previously written user data from an auxiliary memory;
- processing the previously written user data through a plurality of write channel stages;
- and
- generating an error signal at least in part by comparing an output of at least one of the plurality of write channel stages to an output of a corresponding read channel stage, wherein the corresponding read channel stage is calibrated based at least in part on the generated error signal.
A computer program product for calibrating a read channel, the computer program product being embodied in a non-transitory tangible computer readable storage medium and comprising computer instructions for:
- reading previously written user data from an auxiliary memory;
- processing the previously written user data through a plurality of write channel stages;
- and
- generating an error signal at least in part by comparing an output of at least one of the plurality of write channel stages to an output of a corresponding read channel stage, wherein the corresponding read channel stage is calibrated based at least in part on the generated error signal.
Dependencies are inferred from the claim text.