Optical storage media with embedded security device
View Patent ↗An optical disk with an embedded security device, or wafer, is presented. The security device includes security features that enable the identification of genuine optical disks versus counterfeit optical disks. Methods for creating optical disks embedded with security devices are also presented. A security device is placed on the center pin of an open mold before the optical disk is formed. Alternatively, an optical disk having a cavity formed on a surface to receive a security device is created. A special mold with a raised platform creates the cavity on the optical disk. As a further alternative, two optical platters, each having a complementary cavity to accommodate a security device are created using a special mold having a raised platform. The security device is inserted into the complementary cavities and the optical platters and security device are bonded together.
1. A method for creating a counterfeit-resistant optical disk, comprising:
positioning a security device in an optical disk mold, wherein the security device includes a spacing device attached to a surface of the security device such that the security device is prevented from being embedded flush with a surface of the formed optical disk;
closing the optical disk mold; and
forming an optical disk in the optical disk mold, thereby embedding the security device in the formed optical disk.
2. The method of claim 1 , wherein the security device is a security wafer.
3. The method of claim 2 , wherein positioning the security device in the optical disk mold comprises positioning the security device in the optical disk mold such that it is embedded concentrically in the formed optical disk.
4. The method of claim 3 , wherein positioning the security device in the optical disk mold comprises positioning the security device on the center pin of the optical disk mold.
5. The method of claim 1 , wherein the formed optical disk comprises an optical data storage area and a non-optical data storage area, and wherein the security device is positioned in the optical disk mold such that the security device is embedded in the non-optical data storage area.
6. The method of claim 1 , wherein the security device is comprised of the same base material as the formed optical disk.
7. The method of claim 6 , wherein the spacing device is comprised of the same base material as the formed optical disk.
8. The method of claim 7 , wherein the spacing device is a ring concentrically located on the security device.
9. The method of claim 1 , wherein the security device includes a security feature that is used to identify the formed optical disk as a non-counterfeited optical disk.
10. The method of claim 9 , wherein the security feature comprises a plurality of microscopic taggants distributed on the security device.
11. The method of claim 9 , wherein the security feature comprises a plurality of microscopic taggants distributed in the base material of the security device.
12. The method of claim 9 , wherein the security feature is a photo-luminescent coating on the security device.
13. The method of claim 9 , wherein the security feature is a polarized filter.
14. The method of claim 9 , wherein the security feature is a radio frequency identification tag.
15. The method of claim 9 , wherein the security feature is a hologram on the security device.
16. The method of claim 9 , wherein the security feature is a serial number printed on the security device.
17. The method of claim 1 , wherein the formed optical disk is a CD disk.
18. The method of claim 1 , wherein the formed optical disk is a DVD disk.