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:
Aug. 16, 2005
Filed:
Sep. 10, 2001
Ron J. Kadlec, Longmont, CO (US);
Charles R. Watt, Longmont, CO (US);
Christopher J. Turner, Niwot, CO (US);
Hans B. Wach, Longmont, CO (US);
Ron J. Kadlec, Longmont, CO (US);
Charles R. Watt, Longmont, CO (US);
Christopher J. Turner, Niwot, CO (US);
Hans B. Wach, Longmont, CO (US);
DPHI Acquistions, Inc., Boulder, CO (US);
Abstract
A head load algorithm for an optical disk drive is presented. On startup, the optical media can be spun up. Then an optical pick-up unit can be positioned at an extreme position, for example at the inner diameter, and focus can be closed. The optical pick-up unit then can be incrementally moved away from the extreme position while the tracking error signal is monitored to locate an area of the optical media with tracks. Once the area is located, a tracking servo system can close on one of the tracks.