Patent ID: 8169729

Claim:
A magnetic recording/reproducing device comprising: a patterned magnetic storage medium, including: a timing pattern area having a preamble pattern used to adjust at least one of write and read frequencies and a synchronization pattern used to adjust at least one of write and read phases, and a data area having a bit pattern used to store data; a medium driving unit for driving the patterned magnetic storage medium; a magnetic head having at least one of a write head and a read head; and a head driving unit for positioning the magnetic head at a desired track on the patterned magnetic storage medium, wherein the preamble pattern and the synchronization pattern in the timing pattern area are commonly used to at least one of write and read data, and wherein when the read head is positioned on a desired track containing data to be read and data is to be written on the desired track, the preamble pattern and the synchronization pattern are reproduced at the same position in the timing pattern area to adjust at least one of read timing and write timing based on a reproduced waveform of the preamble pattern and the synchronization pattern, wherein the patterned magnetic storage medium is divided into zones in a direction of a radius of the medium, each zone having a data area provided with a bit pattern formed at a constant recording density or write/read frequency, wherein a frequency acquired from a reproduced waveform of the preamble pattern is compensated by using a ratio to obtain a write frequency, the ratio being between a bit frequency of a zone where the read head is positioned and a bit frequency of a zone where the write head is positioned, and wherein a writing operation is performed on the data area based at least in part on the write frequency.