Method and apparatus for providing fast data recovery with adaptive pulse code modulation coding
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United States of America Patent
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Jul 20, 2004
Grant Date -
Apr 8, 2004
app pub date -
Dec 11, 2002
filing date -
Oct 4, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for providing fast data recovery with adaptive pulse code modulation (ADPCM) coding wherein, an ADPCM encoder periodically records the compressional parameters in memory together with regular compressed codes, and an ADPCM decoder retrieves the previously saved compressional parameters when reading the regular data from memory. In case any error occurs in the data compression and decompression processes which would cause a data divergence in the output of the ADPCM decoder, the previously saved compressional parameters can be used to correct the output data, thus enabling fast data recovery in the data outputting process without affecting downstream data in the data stream.
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