Digital signal magnetic recording apparatus with time-division multiplex signal transmission to a rotary cylinder

A digital magnetic recording apparatus comprising:

• multiplex means for time-division multiplexing input digital signals of plural channels and a recording current control signal expressing values of recording currents used for recording the digital signals of plural channels on a magnetic recording medium to obtain a digital transmission signal;
• transmitting means for transmitting the digital transmission signal to a rotary cylinder;
• demultiplex means provided on the rotary cylinder for obtaining the digital signals of plural channels and the recording current control signal form the digital transmission signal transmitted through the transmitting means;
• a plurality of magnetic heads provided on the rotary cylinder for recording the digital signals of plural channels from the demultiplex means on the magnetic recording medium;
• and
• a plurality of recording current control means for controlling the recording currents used for recording the digital signals of plural channels according to the recording current control signal from the demultiplex means.