Apparatus and method for providing longitudinal position marks on an optical tape
AssigneeOracle International Corporation
InventorScott D. Wilson
Life of this patent
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Abstract
In at least one embodiment, an apparatus for writing data and location marks on an optical tape is provided. The apparatus comprises an optical system that includes at least one laser source for transmitting a laser beam therefrom. The optical system further includes a plurality of lens for receiving the laser beam and for directing the laser beam onto at least one guard band on the optical tape to write the location marks thereon. The location marks being indicative of a longitudinal position of the data that is capable of being stored on a writeable section of the optical tape.
Claims20
An apparatus for writing data and location marks on an optical tape, the apparatus comprising:
- an optical system including:
- at least one laser source for transmitting a laser beam therefrom;
- and
- a plurality of lenses for receiving the laser beam and for directing the laser beam onto at least one guard band on the optical tape to write the location marks thereon, the location marks being indicative of a longitudinal position of the data that is capable of being stored on a writeable section of the optical tape.
An apparatus for writing data and location marks on an optical tape, the apparatus comprising:
- an optical system configured to:
- transmit a first laser beam on a first guard band of the optical tape to write a first set of location marks thereon;
- and
- transmit a second laser beam on a second guard band of the optical tape to write a second set of location marks thereon;
- each of the first set of location marks and the second set of location marks being indicative of a longitudinal position of the data that is capable of being stored along a writeable section of the tape.
An apparatus for reading data and location marks on an optical tape, the apparatus comprising:
- a plurality of optical pickup units (OPUs) for reading data stored on a writeable section of the optical tape;
- and
- a plurality of sensors for reading location marks from at least one guard band on the optical tape, wherein the location marks are indicative of a longitudinal position of the data on the writeable section and the at least one guard band being located on an outer periphery of the writeable section.
Dependencies are inferred from the claim text.