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:
Sep. 16, 1997
Filed:
Dec. 21, 1995
Applicant:
Inventors:
Paul A Swearingen, San Jose, CA (US);
Stanley H Shepherd, Morgan Hill, CA (US);
Assignee:
Quantum Corporation, Milpitas, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360 75 ; 360 7707 ;
Abstract
A servowriter capable of non-invasively servowriting a magnetic recording disk drive controls the drive's on-board electro-mechanical head-position actuator system and read/write interface to self-servowrite the target drive. A head within the drive is used to write, open loop, a set of spiral tracks having embedded timing information. The spiral tracks are subsequently used to position the head so that standard embedded servo wedges can then be written. After the standard embedded servo wedges are written, the spiral tracks may be overwritten with user data.