Patent ID: 6738205
Filing Date: 2004-05-18
Classification: G11B

Abstract:
A method for self-servo writing a disk drive comprising the steps of:(a) transferring a servo reference pattern by magnetic printing onto at least one storage surface of a reference disk, wherein a resulting printed reference pattern includes embedded servo information providing servo timing and transducer head position information; (b) assembling the disk drive including the steps of installing at least said disk into the disk drive and enclosing said disk and the data transducers within a housing sealed against particulate contamination from an eternal ambient environment; (c) reading the printed reference pattern from said disk via at least one transducer head to generate a readback signal; (d) sampling the readback signal at a sampling rate to generate a sampled signal; (e) processing the sampled signal waveform spectrum to generate a recovered signal including the embedded servo information and a fundamental frequency of the sampled signal; (f) using the servo information from the recovered signal to precisely position and maintain the data transducers at concentric track locations of disk storage surfaces; and (g) self-writing disk drive servo patterns onto the storage surfaces at the concentric track locations with the data transducers in accordance with disk drive servo pattern features.