Inventor
WACH HANS B
US21 patents
⚠️ This page may combine multiple inventors who share the name “WACH HANS B”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DPHI ACQUISITIONS INC
16 patentsUS7196979B2Mar 27, 2007
Calibration storage methods for a digital focus and tracking servo system with calibration
DPHI ACQUISITIONS INC39 citations92
US6809995B2Oct 26, 2004
Digital focus and tracking servo system
DPHI ACQUISITIONS INC23 citations92
US7092322B2Aug 15, 2006
Calibration of focus error signal offset in a focus servo system
DPHI ACQUISITIONS INC13 citations84
US7023776B2Apr 4, 2006
Calibration initiation methods for a tracking and focus servo system
DPHI ACQUISITIONS INC11 citations84
US6965547B2Nov 15, 2005
Tracking and focus servo system with error signal inverse non-linearity calibration
DPHI ACQUISITIONS INC12 citations84
US6958957B2Oct 25, 2005
Digital tracking and focus servo system with TES to FES crosstalk calibration
DPHI ACQUISITIONS INC14 citations84
US6906985B2Jun 14, 2005
Calibration of tracking error signal gain in a tracking servo system
DPHI ACQUISITIONS INC14 citations84
US7782721B2Aug 24, 2010
Digital focus and tracking servo system with multi-zone calibration
DPHI ACQUISITIONS INC7 citations74
US6904007B2Jun 7, 2005
Digital servo system with loop gain calibration
DPHI ACQUISITIONS INC10 citations74
US6741530B2May 25, 2004
Time critical and non-time critical tasks control system for an optical disk using first and second processors
DPHI ACQUISITIONS INC9 citations74
US7492675B2Feb 17, 2009
Digital servo system with calibrated notch filters
DPHI ACQUISITIONS INC6 citations63
US7414940B2Aug 19, 2008
Calibration of a focus error signal gain in a focus servo system
DPHI ACQUISITIONS INC6 citations63
US6977873B2Dec 20, 2005
System and method to adjust the level of re-calibration effort based on disc drive performance
DPHI ACQUISITIONS INC3 citations63
US6882601B2Apr 19, 2005
Digital servo system with feed-forward control loops
DPHI ACQUISITIONS INC6 citations63
US6847597B2Jan 25, 2005
Optical disk drive with a digital focus and tracking servo system
DPHI ACQUISITIONS INC6 citations63
US6958963B2Oct 25, 2005
System and method for handling events in an optical disc drive
DPHI ACQUISITIONS INC1 citations52