| 摘要 |
Various systems and methods for error reduction in a digital information system are disclosed herein. As one example, a digital storage system is provided that includes a storage medium that with an encoded data set accessible via a buffer. The systems further include a soft output Viterbi algorithm channel detector operable to receive the encoded data set, and to provide a hard and a soft output representing the encoded data set. The hard and the soft output from the soft output Viterbi algorithm channel detector are provided to a single parity row decoder that provides another hard output that is an error reduced representation of the encoded data set. The encoded data set is additionally provided from the buffer to another channel detector via a delay element. The delay element time shifts the encoded data set to create a time shifted encoded data set. The hard output from the single parity row decoder and the time shifted encoded data set are provided to coincident with each other to another channel detector. This other channel detector provides a recovered output that exhibits a reduction in errors compared with the encoded data set.
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