Split sector recovery method
AssigneeMarvell International Ltd.
InventorsZining Wu, Gregory Burd, Nitin Nangare
Life of this patent
Estimating the term…
Abstract
Reproduction of encoded data which includes a split-mark. FIR data corresponding to split-mark and FIR data affected by the split-mark due to inter-symbol-interference are identified. FIR data corresponding to the split-mark is removed from the received FIR data. Recovered data is created by removing incorrect inter-symbol-interference from the FIR data due to the split-mark, and adding correct inter-symbol-interference from codeword bits. The recovered data is stitched together with data unaffected by split-mark data.
Claims12
A method for reproducing encoded data which includes a split-mark, comprising:
- identifying split-mark data and data affected by the split-mark data due to inter-symbol-interference;
- creating recovered data by removing inter-symbol-interference from the data affected by the split-mark data due to inter-symbol-interference;
- adding correct inter-symbol-interference from codeword bits to the recovered data;
- and
- stitching the recovered data together with data unaffected by split-mark data.
A computer-readable medium storing a computer-executable program for reproducing encoded data which includes a split-mark, said program comprising the steps of:
- identifying split-mark data and data affected by the split-mark data due to inter-symbol-interference;
- creating recovered data by removing inter-symbol-interference from the data affected by the split-mark data due to inter-symbol-interference;
- adding correct inter-symbol-interference from codeword bits to the recovered data;
- and
- stitching the recovered data together with data unaffected by split-mark data.
A disk drive controller for reproducing data from a hard disk which includes split-mark data, comprising:
- a reading unit for reading encoded data from the hard disk;
- an identification unit for identifying split-mark data and data affected by the split-mark data due to inter-symbol-interference;
- a recovery unit for creating recovered data by removing inter-symbol-interference from the data affected by the split-mark data;
- a replacement unit for replacing the data affected by the split-mark data with the recovered data;
- a stitching unit for stitching the recovered data together with data unaffected by split-mark data;
- and
- an output unit for delivering the recovered and stitched encoded data to a decoder.
Dependencies are inferred from the claim text.