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. 18, 2009
Filed:
Dec. 30, 2004
Applicants:
Andrew L. Van Brocklin, Corvallis, OR (US);
D. Mitchel Hanks, Ft. Collins, CO (US);
Greg J. Lipinski, Ft. Collins, CO (US);
Inventors:
Andrew L. Van Brocklin, Corvallis, OR (US);
D. Mitchel Hanks, Ft. Collins, CO (US);
Greg J. Lipinski, Ft. Collins, CO (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 7/00 (2006.01); G11B 7/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
Calibration of a focus offset in an optical drive. A calibration pattern, comprising a plurality of marked areas, is marked upon a medium. A user input is received, identifying a perceived darkest marked area of the calibration pattern. The focus offset is determined corresponding to the perceived darkest marked area.