Magnetic recording and reproducing device

A magnetic recording and reproducing device, comprising:

• a magnetic recording medium;
• a magnetic head;
• and
• a controller,
• the controller implementing a first operation in a first information recording interval, the first information recording interval including a first recording interval and a first non-recording interval,
• the controller implementing a second operation in a second information recording interval, the second information recording interval including a second recording interval and a second non-recording interval and being continuous with the first information recording interval,
• the first operation including:
• in the first recording interval, generating a first signal magnetic field while generating a first recording magnetic field from the magnetic head, the first signal magnetic field being of a first intensity and a high frequency, the first recording magnetic field corresponding to the first information;
• and
• in the first non-recording interval, generating a first non-signal magnetic field from the magnetic head, the first non-signal magnetic field being of an intensity lower than the first intensity,
• the second operation including:
• in the second recording interval, generating a second signal magnetic field while generating a second recording magnetic field from the magnetic head, the second signal magnetic field being of a second intensity and a high frequency, the second recording magnetic field corresponding to the first information;
• and
• in the second non-recording interval, generating a second non-signal magnetic field from the magnetic head, the second non-signal magnetic field being of an intensity lower than the second intensity.