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. 11, 2015
Filed:
Apr. 01, 2013
Applicant:
Optical Devices, Llc, Peterborough, NH (US);
Inventor:
Ron J. Kadlec, Longmont, CO (US);
Assignee:
Optical Devices, LLC, Peterborough, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 21/08 (2006.01); G11B 7/09 (2006.01); G11B 7/085 (2006.01);
U.S. Cl.
CPC ...
G11B 7/094 (2013.01); G11B 7/08529 (2013.01); G11B 7/08541 (2013.01);
Abstract
A servo processor for an optical disk drive is provided that includes: an analog-to-digital converter for converting versions of photodetector output signals into digital signals; and a digital signal processor configured to receive the digital signals, the digital signal processor being further configured to determine a focus error signal (FES) and a tracking error signal (TES) from the digital signals, the digital signal processor being further configured to process TES and FES through servo algorithms to produce tracking and focus control signals.