Optical disc for data storage with invisible tracks and method of making same
AssigneesSony Corporation, Sony Electronics Inc.
InventorJay Brian Fanning
Life of this patent
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Abstract
An optical disc and a method of making the same are provided in which the tracks on the disc are not numbered in strict numeric sequence. For example, a disc may contain only odd or only even numbered tracks, or tracks numbered 11 to 20. This is accomplished by providing invisible tracks in the positions of the tracks missing from the listing. Invisible tracks are of minimal length such that the invisible tracks are counted by a disc playing device, but will seem to a listener to be missing when the device plays the disc.
Claims11
An optical disc having tracks thereon comprising:
- at least one invisible track;
- and
- at least one visible track having data content,
- wherein said at least one invisible track comprises a plurality of invisible tracks which are placed together at a beginning of data stored on said disc.
An optical disc having tracks thereon comprising:
- at least one invisible track;
- and
- at least one visible track having data content,
- wherein said at least one invisible track comprises a plurality of invisible tracks and said at least one visible track comprises a plurality of visible tracks, and
- wherein said visible and invisible tracks are interspersed with each other.
An optical disc having tracks thereon comprising at least one track of a first type, wherein a track of said first type is a track with a minimal length such that said track of the first type is initially counted, but appears to be missing when a disc player plays said optical disc.
A method of making an optical disc on which tracks recognized by a disc player are not numbered in unbroken, numeric sequence beginning with one, the method comprising providing at least one invisible track on said disc.
Dependencies are inferred from the claim text.