Method and apparatus for digital storage and retrieval of data
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United States of America Patent
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Apr 21, 1992
Grant Date -
N/A
app pub date -
Apr 10, 1989
filing date -
Apr 10, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for error detection and correction in the storage and retrieval of digital data on magnetic storage systems includes converting the digital data into analog waveforms, multiplexing the analog waveforms with reference values and storing same as a data stream, demultiplexing the reference values from the data stream and using the retrieved reference values to detect and reduce distortion or other errors in the data stream. Assignment of data to analog waveforms includes option of assigning arbitrary quantities of data to a compact analog waveform representation. Analog errors may be detected and corrected statistically, while digital errors may be detected and corrected using standard signal processing techniques.
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