(57) ABSTRACT A laser-based workpiece processing system includes sensors connected to
a sensor controller that converts sensor signals into focused spot motion commands for …

A laser-based workpiece processing system includes sensors connected to a sensor
controller that converts sensor signals into focused spot motion commands for actuating a …

US5452285A - Uniformly distributed servo data for optical information storage medium - Google
Patents US5452285A - Uniformly distributed servo data for optical information storage medium …

US5422762A - Method and apparatus for optimizing disk performance by locating a file
directory on a middle track and distributing the file allocation tables close to clusters referenced …

An optical disk with clock pits formed on tracks at prede termined intervals extending in a
radial direction of the optical disk. Servo pits are arranged wobbly with respect to the tracks …

An optical card recording/reproducing apparatus for record ing/reproducing information
onto/from an optical card by relatively moving the optical card to an optical head is provided …

A beam-spot control unit is arranged such that a light beam is irradiated onto an optical
recording medium having a plurality of tracks, through an objective lens, to detect reflecting …

An optical disc that has a recognition mark area behind a recorded area and in which the
last data in the recorded area is stably accessed, the recognition mark area can be …

The present invention generally relates to optical recording/reproducing apparatus, and
relates particularly to a tracking system therefor. Tracking pit rows are provided on opposite …

Information recording area of an optical disk is divided radially into a plurality of recording
areas with a boundary area interposed therebetween. The boundary area is formed as …