Optical tape with an increased track pitch for improvement of tracking performance after seam
AssigneeOracle International Corporation
InventorsLingtao Wang, Scott Wilson, Dwayne Edling, Faramarz Mahnad
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Abstract
In at least one embodiment, an optical data storage tape is provided. The optical data storage tape includes a read/write data area including a plurality of writeable tracks for storing data thereon, each writeable track having a first track width. The optical data storage tape further includes a seam area positioned proximate to the read/write data area. The seam area including a plurality of non-writeable tracks, each non-writeable track including a second track width that is greater than the first track width for each writeable track.
Claims10
An optical data storage tape comprising:
- a first read/write data area including a first plurality of tracks for storing data, each track, in the first plurality of tracks, having a first track width;
- a pre-seam area positioned between the first read/write data area and a seam, the pre-seam area including a second plurality of tracks, wherein at least one of the second plurality of tracks has a second track width greater than the first track width;
- the seam;
- a post-seam area positioned between the seam and a second read/write data area, the post-seam area including a third plurality of tracks, wherein at least one of the third plurality of tracks has a third track width that is greater than the first track width;
- the second read/write data area including a fourth plurality of tracks for storing data.
An apparatus comprising:
- an embosser drum having a joint and configured to imprint a nanostructure pattern onto an exterior of an optical data storage tape that forms:
- a first read/write data area including a first plurality of tracks for storing data, each track, in the first plurality of tracks, having a first track width;
- a pre-seam area positioned between the first read/write data area and a seam, the pre-seam area including a second plurality of tracks, wherein at least one of the second plurality of tracks has a second track width greater than the first track width;
- the seam corresponding to the joint;
- a post-seam area positioned between the seam and a second read/write data area, the post-seam area including a third plurality of tracks, wherein at least one of the third plurality of tracks has a third track width that is greater than the first track width;
- the second read/write data area including a fourth plurality of tracks for storing data.
A tracking servo system comprising:
- a hardware processor;
- the tracking servo system configured to perform operations comprising:
- reading data from a track in a first plurality of tracks in a first read/write data area, the first plurality of tracks, having a first track width;
- detecting a pre-seam area positioned between the first read/write data area and a seam, the pre-seam area including a second plurality of tracks, wherein at least one of the second plurality of tracks has a second track width greater than the first track width;
- locking on to a track in a post-seam area positioned between the seam and a second read/write data area, the post-seam area including a third plurality of tracks, wherein at least one of the third plurality of tracks has a third track width that is greater than the first track width;
- reading data from a track in a fourth plurality of tracks in the second read/write data area, the second read/write data area including a fourth plurality of tracks for storing data.
Dependencies are inferred from the claim text.