| 摘要 |
<p>PROBLEM TO BE SOLVED: To well reproduce information data words including binary data with a simple circuit even if these data words are recorded in linear tracks and even during traveling in a reverse direction. SOLUTION: The recording waveform of bit data '0' comprises high level=1: low level=3 in duty ratio and the recording waveform of bit data '1' comprises high level=3: low level=1 in duty ratio. The recording wavelength of a tail mark TM indicating the delimiter of the words comprises high level = 1: low level=1 in duty ratio. If these waveforms are recorded in the linear track T2 at the same period by inverting the magnetization direction at a rise and fall, the phase at the rise of the signal during forward traveling (the fall during reverse traveling) is made constant.</p> |
