The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 2007
Filed:
Sep. 20, 2002
Michael Anthony Moser, San Jose, CA (US);
Ara Patapoutian, Westborough, MA (US);
John Mcewen, Legal Representative, Porter, TX (US);
Bin Liu, Newark, CA (US);
Bruce Buch, Westborough, MA (US);
Michael Anthony Moser, San Jose, CA (US);
Ara Patapoutian, Westborough, MA (US);
John McEwen, legal representative, Porter, TX (US);
Bin Liu, Newark, CA (US);
Bruce Buch, Westborough, MA (US);
Maxtor Corporation, Scotts Valley, CA (US);
Abstract
Disk drive self-servo writing includes transferring a reference pattern by magnetic printing onto a reference disk, wherein the resulting printed reference pattern includes embedded servo information that provides servo timing and head position information, installing the reference disk and a head into the disk drive, reading the printed reference pattern using the head to generate a readback signal, sampling the readback signal at a sampling rate to generate a sampled signal, processing the sampled signal waveform spectrum to generate a recovered signal including the embedded servo information and fundamental and higher harmonics of the sampled signal, using the embedded servo information from the recovered signal to precisely position and maintain the head at concentric tracks of the reference disk, and self-writing servo patterns onto the tracks with the head.