A series of signals is applied to a lens actuator of a disc media marking device to respectively position a lens at a series of distances from an optical disc. A mark is formed on the optical disc at each of the distances of the lens from the optical disc by passing a light beam through the lens and onto the optical disc. The darkest of the marks is determined. The signal applied to the actuator corresponding to the darkest mark is determined.
申请公布号
US2007030332(A1)
申请公布日期
2007.02.08
申请号
US20050195094
申请日期
2005.08.02
申请人
BROCKLIN ANDREW L V;HANKS DARWIN M;LIPINSKI GREG J
发明人
BROCKLIN ANDREW L.V.;HANKS DARWIN M.;LIPINSKI GREG J.