Digital magnetic recording and reproducing apparatus

A digital magnetic recording and reproducing apparatus, wherein a digital code signal is recorded and reproduced magnetically, comprising:

• a first signal generating means for generating a first digital signal provided for preventing the continuation of the same signal levels in said digital code signal;
• a first adder for effecting a code conversion by modulo-2-adding together said digital code signal and said first digital signal;
• a recording means for recording an output signal derived from said first adder on a magnetic carrier;
• a reproducing means for reproducing said output signal from said magnetic carrier;
• a threshold level generating means for generating a threshold level comprising a compensator and at least two peak rectifiers which treat an applied input signal derived from said reproduced signal with the same time-constant respectively;
• a level comparator for correcting the waveform of said applied input signal by comparing said applied input signal with said threshold level derived from said threshold level generator;
• a second signal generating means for generating a second digital signal provided for restoring said code conversion;
• and,
• a second adder for modulo-2-adding together a corrected output signal derived from said level comparator and said second digital signal, so as to restore said digital code signal.