Digital magnetic recording and reproducing apparatus
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United States of America Patent
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Nov 18, 1980
Grant Date -
N/A
app pub date -
Mar 12, 1979
filing date -
Mar 15, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a digital magnetic recording and reproducing apparatus, a digital code signal to be recorded is given a code conversion by means of modulo-2-adding another digital signal thereto to prevent a continuation of the same binary signal levels for a prolonged period. The signal level of the reproduced digital code signal is corrected by level comparison with a threshold level provided by applying the above reproduced digital code signal to a compensator and peak rectifiers, which have the same time-constant, and then the reproduced digital code signal is given another code conversion by means of modulo-2-adding still another digital signal provided for restoring the code conversion, so that it is possible to reproduce the original digital code signal faithfully.
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