A method for compensation of a between the head position of the invention is to set and servo sampling time generating circuit environment

摘要

The servo scanning clock generator circuit uses servo information to measure the position difference between two heads. This information is recorded in an embedded sector servo function on a pre-arranged cylinder. Whenever a servo address marker is recognised, a definitive head selection signal and a servo scanning enabling signal to scan servo information stored on the relevant tracks of the pre-arranged cylinder are always generated. The circuit includes a clock generator to generate an even/odd identification signal whenever the servo address marker is recognised, and this identification signal is inverted before it is output. It also includes a NAND-gate to couple a servo calibration signal to measure the position difference between heads, and an AND-gate to couple the NAND-gate and a head selection signal, and to generate the definitive head selection signal.