| 摘要 |
PURPOSE:To accomplish supersonic noiseless reproduction by generating a specific waveform synchronizing with the rotation of a magnetic head and applying this specific waveform to a head moving means. CONSTITUTION:The displacement of magnetic heads 1, 1 is detected by a head part 5 of a displacement meter and voltage corresponding to the displacement is applied to an oscilloscope 8. A specific waveform generator 10 generates a signal with a specific waveform set up by the period of a drum pulse synchronizing with the rotation of the magnetic heads 1, 1 and supplies the signal as a driving signal to a head moving means in a head mechanical part 3. Thus, the movement of the magnetic heads 1, 1 can be controlled by setting up the specific waveform in the specific waveform generator 10, driving the magnetic heads 1, 1 by a signal with the specific waveform and observing the movement by the oscilloscope 8. |
