Magnetic field modulation magnet-optical recording apparatus...

Details Magnetic field modulation magnet-optical recording apparatus... Magnetic field modulation magnet-optical recording apparatus...

G - Physics

11

B

G11B 13/04 (2006.01) G11B 11/105 (2006.01) G11B 20/06 (2006.01)

Patent

CA 2073539

A positive-direction current source is connected to a magnetic head coil via a multiplier and a switching device, and a negative-direction current source is connected to the magnetic head coil via the switching device. The output current of the positive-direction current source is controlled to a level appropriate for generating a magnetic field forming a magneto-optical recording mark based on the amplitude of an information signal by the multiplier. The switching device is turned on/off by a carrier signal. As a result, a magnetic head driving signal can be obtained having the positive-direction current value modulated based on the amplitude of the information signal.

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