CLOCK EXTRACTION METHOD FOR PATTERNED MEDIUM, CLOCK EXTRACTION CIRCUIT FOR PATTERNED MEDIUM AND PATTERNED MEDIUM

摘要

An object of the present invention is to match the exact timing of a clock signal to the magnetic dot of the patterned medium. ; And the patterned medium 11, the magnetic portions 16 are disposed at certain intervals magnetic dot 15 being a magnetic signal is recorded, is formed on the magnetic signal is nonmagnetic part 17 not recording. Detecting the location of a magnetic signal is not recorded by the magnetic head nonmagnetic part 17, thereby synchronizing the clock signal to the detection signal of the nonmagnetic part 17.