Apparatus for detecting errors in a digital data stream encoded in a double density code
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United States of America Patent
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Feb 26, 1985
Grant Date -
N/A
app pub date -
Sep 7, 1982
filing date -
Sep 7, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In the decoding of a data stream encoded in a Miller type code the number of intermediate duration transition intervals are counted between successive transition intervals of long duration. Whenever an odd number of intermediate duration transition intervals are detected between successive transition intervals of long duration, an error signal is produced. The error signal is developed by two gates utilizing signals otherwise present in the decoding apparatus.
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