Reproducing apparatus and method, and recording and reproducing apparatus
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United States of America Patent
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Sep 9, 2008
Grant Date -
Feb 9, 2006
app pub date -
Aug 1, 2005
filing date -
Aug 4, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A signal of a run-length-limited code is read out from a recording medium. The read-out signal is converted into a reproduced digital signal. A decoder subjects the reproduced digital signal to first decoding different from run length decoding to get a first decoded signal. Information bit streams are generated from the first decoded signal. The information bit streams are different in timing by 1-bit-correpsonding intervals. Run length decoders subject the information bit streams to run length decoding to get run-length-decoded bit streams respectively. Each of the run-length-decoded bit streams undergoes one of error correction and error detection. A decision is made as to which of the run-length-decoded bit streams is the smallest in error number on the basis of results of the one of error correction and error detection. The run-length-decoded bit stream being the smallest in error number is selected and outputted as a likeliest information bit stream.
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