Pulse-Based Writing for Magnetic Storage Media

An apparatus comprising:

• an interface to receive data from a host;
• a disk of magnetic storage media to store the data;
• a magnetic media writer configured to write, via a write head of the magnetic media writer, the data to the magnetic storage media as respective magnets that correspond to data bits of the data;
• and
• a write current controller configured to:
• determine that a string of the data bits having a same polarity corresponds to a magnet having a length that is longer than a magnet length threshold associated with the magnetic media writer;
• assert, in response to the determination, a signal to the magnetic media writer to prevent the magnetic media writer from increasing write current applied to the write head in response to a transition in the string of data bits;
• insert, into the string of data bits, at least one transition to a polarity opposite to the same polarity of the string of data bits;
• and
• transmit, to the magnetic media writer, the string of data bits including the at least one transition to cause the magnetic media writer to reduce an application of write current applied to the write head while writing the magnet corresponding to the string of data bits to the magnetic storage media.

A System-on-Chip comprising:

• an interface to a host from which data is received for writing to magnetic storage media;
• an interface to a media writer of the magnetic storage media;
• a write current controller implemented at least partially in hardware, the write current controller configured to:
• determine that a string of data bits having a same polarity corresponds to a magnet formed on the magnetic storage media has a length that is longer than a magnet length threshold associated with the media writer;
• assert, in response to the determination, a signal to the media writer to prevent the media writer from increasing write current to a write head of the media writer in response to a transition in the string of the data bits;
• insert, into the string of data bits, at least one transition to a polarity opposite to the same polarity of the string of data bits;
• and
• transmit, to the media writer, the string of data bits including the at least one transition to cause the media writer to reduce an application of write current applied to the write head while writing the magnet corresponding to the string of data bits to the magnetic storage media.