US 12,198,724 B1 · Codeword interleaving over magnetic media surfaces

Abstract

The present disclosure describes aspects of codeword interleaving over magnetic media surfaces. In some aspects, segments of a codeword are spread or interleaved across multiple surfaces of magnetic storage media. Data for one or more codewords may be received by a read/write channel and, for each codeword, a respective index is selected, received, or generated. The index may indicate which sector partitions of the multiple surfaces that segments of one of the codewords are to be written. The data of the codewords can be segmented and then arranged in an interleaver based on the respective index to which the codeword corresponds. The codeword segments are written from the interleaver to sectors of the multiple surfaces of the magnetic media. By so doing, codewords may be spread across multiple surfaces, such that a loss of a portion of a segment track does not prevent readback and decoding of the codewords.

Claims20

Dependent claims

A method for codeword interleaving over magnetic media surfaces, comprising:

receiving data to be written to the magnetic media surfaces;
encoding the data to provide one or more codewords of encoded data;
determining, for each of the one or more codewords, a respective index that indicates which of the magnetic media surfaces that segments of the codewords are to be written;
arrange the segments of the one or more codewords into an interleaver based on the respective index that corresponds to the codeword;
and
writing, from the interleaver, the segments of the one or more codewords to sector partitions of at least two of the magnetic media surfaces to interleave the segments of the one or more codewords over the magnetic media surfaces.

3 more elements

An apparatus comprising:

an interface to receive data from a host;
at least one disk of magnetic storage media comprising at least two magnetic media surfaces that are arranged into sectors for storing the data;
an interleave buffer configured to buffer segments of codewords for writing to the sectors of the at least two magnetic media surfaces;
and
an interleaver configured to:
encode the data to provide one or more codewords of encoded data;
determine, for each of the one or more codewords, a respective index that indicates which of the magnetic media surfaces that segments of the codewords are to be written;
arrange the segments of the one or more codewords into an interleaver based on the respective index that corresponds to the codeword;
and
write, from the interleaver, the segments of the one or more codewords to sector partitions of at least two of the magnetic media surfaces to interleave the segments of the one or more codewords over the magnetic media surfaces.

7 more elements

Dependencies are inferred from the claim text.

Codeword interleaving over magnetic media surfaces

Life of this patent

Codeword interleaving over magnetic media surfaces

Life of this patent

Abstract

Claims20