Secure optical information disc
AssigneeVidco, Inc.
InventorJoel Douglas Bigley
Life of this patent
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Abstract
A secure optical data disc comprising an electronic article surveillance tag embedded within a layered disc structure comprising first and second substrates is disclosed. The tag is placed within a non-readable zone (i.e., one that does not have data tracks) of the secure disc. Layer-wise, the tag is either sandwiched between the two substrates or alternatively embedded within one of the two substrates. In the case where the tag is sandwiched between first and second substrates, a bonding layer occupies a space radially outward from the tag. The bonding layer holds the first and second substrates together thereby forming the secure disc.
Claims20
A secure optical data storage disc comprising:
- a first substrate having a non-uniform thickness that creates a depression extending at a center hole and extending radially outward from the center hole;
- and
- a security tag, wherein the non-uniform thickness accommodates a portion of a thickness of the security tag, and wherein the thickness of the security tag exceeds a depth of the depression in the first substrate created by the non-uniform thickness.
A method for manufacturing a secure optical data storage disc comprising, the method comprising:
- forming the first substrate having a non-uniform thickness that creates a depression extending at a center hole and extending radially outward from the center hole;
- and
- securing a security tag to the first substrate within the non-readable zone, wherein the non-uniform thickness accommodates a portion of a thickness of the security tag, and wherein the thickness of the security tag exceeds a depth of the depression in the first substrate created by the non-uniform thickness.
Dependencies are inferred from the claim text.