发明名称 |
Digital magnetic recording and reproducing apparatus |
摘要 |
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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申请公布号 |
US4234898(A) |
申请公布日期 |
1980.11.18 |
申请号 |
US19790019592 |
申请日期 |
1979.03.12 |
申请人 |
NIPPON HOSO KYOKAI |
发明人 |
NAKAGAWA, SHOZO;YOKOYAMA, KATSUYA;KATAYAMA, HIRONOBU |
分类号 |
G11B20/10;(IPC1-7):G11B5/09 |
主分类号 |
G11B20/10 |
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