1
Ron J Kadlec, Christopher J Turner, Hans B Wach: Tracking and focus servo system with error signal inverse non-linearity calibration. DPHI Acquisitions, Jon Hallman MacPherson Kwok Chen & Heid, November 15, 2005: US06965547 (12 worldwide citation)

A digital servo system of an optical disk drive with a calibrated inverse non-linearity function is disclosed. A look-up table is determined, for example, with a focus error signal gain corresponding with a focus error signal offset so that the response of the focus servo system is substantially lin ...


2
Ron J Kadlec, Christopher J Turner, Hans B Wach: Tracking and focus servo system with error signal inverse non-linearity calibration. Gary J Edwards, SKJERVEN MORRILL MacPHERSON, August 22, 2002: US20020114230-A1

A digital servo system of an optical disk drive with a calibrated inverse non-linearity function is disclosed. A look-up table is determined, for example, with a focus error signal gain corresponding with a focus error signal offset so that the response of the focus servo system is substantially lin ...