Reduced read/write transition overhead for storage media
AssigneeSeagate Technology LLC
InventorsBarmeshwar Vikramaditya, Bruce Douglas Buch, Jon Karsten Klarqvist
Life of this patent
Estimating the term…
Abstract
A technique is described for reducing overhead in a magnetic medium utilizing interspersed timing synchronization fields. In particular, a reader reads timing synchronization fields interspersed within data fields of the medium to obtain timing measurements. The reader is separated from a writer by a distance greater than a distance of the reader to traverse a select timing synchronization field. As such, the writer may perform a direct current (DC) write to the medium to suspend transitional write operations while the reader is reading the select timing synchronization field, and/or while the writer is over a unipolar field (e.g., a timing synchronization field).
Claims18
A method for reducing overhead in a data storage medium utilizing interspersed timing synchronization fields, the method comprising:
- reading, by a reader, timing synchronization fields interspersed within data fields of the medium to obtain timing measurements, the reader being separated from a writer by a distance greater than a distance of the reader to traverse a select timing synchronization field;
- performing a direct current (DC) write to the medium to suspend transitional write operations while the reader is reading a timing synchronization field;
- and
- writing data to an additional area after the DC write and before the reader reaches the select timing synchronization field.
An apparatus for reducing overhead in a data storage medium utilizing interspersed timing synchronization fields, the apparatus comprising:
- a reader configured to read timing synchronization fields interspersed within data fields of the medium to obtain timing measurements;
- a writer configured to write data to the medium, the writer being separated from the reader by a distance greater than a distance of the reader to traverse a select timing synchronization field;
- and
- a read-write head controller configured to control the reader and the writer, the head controller configured to direct the writer to i) perform a direct current (DC) write to the medium to suspend transitional write operations while the reader is reading a timing synchronization field and ii) to write data to an additional area after the DC write and before the writer reaches the select timing synchronization field.
A system, comprising:
- a data storage medium having interspersed timing synchronization fields interspersed within data fields of the medium;
- a read-write heading having a reader and a writer, the reader and the writer being separated from each other by a distance greater than a distance of the reader to traverse a select timing synchronization field prior to the writer reaching the select timing synchronization field;
- and
- a read-write head controller configured to control the reader and the writer, the head controller configured to obtain timing measurements by reading the timing synchronization fields, the head controller further configured to write data to the medium, and to perform a direct current (DC) write to the medium to suspend transitional write operations while the reader is reading a timing synchronization field and to write data to an additional area after the DC write and before the writer reaches the select timing synchronization field.
Dependencies are inferred from the claim text.