Forming a visible label on an optical disc
AssigneeHewlett-Packard Development Company, L.P.
InventorsDonald B. Ouchida, Timothy Wagner
Life of this patent
Estimating the term…
Abstract
A system, method, and medium for forming a visible label on an optical disc. Label data for a label track of the disc is received into a buffer of a disc drive. The label data is analyzed to identify the label track. A surface contour of the disc is mapped only near the label track. Focus actuator signals for the label track are derived using the surface contour. The label track is marked, with a laser of the disc drive, according to the label data while the laser is focusing the focus actuator signals.
Claims15
A method of forming a visible label on an optical disc, comprising:
- receiving, into a buffer of a disc drive, label data for a label track of the disc;
- analyzing the label data to identify the label track;
- mapping a surface contour of the disc only near the label track;
- deriving, using the surface contour, focus actuator signals for the label track;
- and
- marking, with a laser of the disc drive, the label track according to the label data while focusing the laser on the label track using the focus actuator signals.
An optical disc drive for forming a visible label on an optical disc, comprising:
- a data buffer configured to receive from an external source label data for a label track of the disc;
- and
- a controller configured to
- analyze the label data to identify the label track,
- operate a laser and a focus actuator to characterize a surface contour of the disc only near the label track, and
- mark the label track with the laser according to the label data while applying signals derived from the surface contour to the focus actuator so as to focus the laser for the label track.
A method of forming a visible label on an optical disc, comprising:
- receiving, into a buffer of a disc drive, label data for marking a plurality of label tracks of the disc;
- analyzing the label data to identify the label tracks to be marked;
- mapping a surface contour of the disc only at some or all of the label tracks to be marked;
- deriving, using the surface contour, focus actuator signals for all of the label tracks to be marked;
- and
- marking, with a laser of the disc drive, all of the label tracks according to the corresponding label data for each label track while focusing the laser on each label track using the corresponding focus actuator signals for each label track.
Dependencies are inferred from the claim text.