Deterring theft of optical media
First Claim
1. An optical media disk comprising a substrate surface having data encoded thereon, said substrate surface being treated with a light-sensitive material that is initially in a first phase, wherein said light-sensitive material deters theft of said optical media disk by causing said encoded data to be unreadable while said light-sensitive material is in the first phase, and wherein said light-sensitive material is to be changed from said first phase to a second phase, prior to a point of sale of said optical media disk, when exposed to a light source having a predetermined wavelength, said encoded data to be readable when said light-sensitive material is in the second phase, and wherein said light-sensitive material is to permanently remain in said second phase after being exposed to said light source.
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Accused Products
Abstract
An optical media disk is treated with a light-sensitive material that impedes the ability of a optical media player from reading data stored on the disk. This light-sensitive material is a material changes phase upon exposure to one or more wavelengths of light. During the initial phase, the light-sensitive material will render the disk unreadable. After activation, however, the disk becomes readable by conventional optical media players. In this fashion, theft of yet-to-be-activated optical media is deterred.
60 Citations
18 Claims
- 1. An optical media disk comprising a substrate surface having data encoded thereon, said substrate surface being treated with a light-sensitive material that is initially in a first phase, wherein said light-sensitive material deters theft of said optical media disk by causing said encoded data to be unreadable while said light-sensitive material is in the first phase, and wherein said light-sensitive material is to be changed from said first phase to a second phase, prior to a point of sale of said optical media disk, when exposed to a light source having a predetermined wavelength, said encoded data to be readable when said light-sensitive material is in the second phase, and wherein said light-sensitive material is to permanently remain in said second phase after being exposed to said light source.
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9. A method of deterring theft comprising:
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encoding data on an optical media; treating a substrate surface of said optical media with a light-sensitive material that is initially in a first phase, wherein said light-sensitive material deters theft of said optical media by causing said encoded data to be unreadable while in said first phase; activating, prior to a point of sale of said optical media, said light-sensitive material using a light source having a predetermined wavelength, wherein said activating causes said light-sensitive material to change from said first phase to a second phase, wherein said encoded data is readable when said light-sensitive material is in the second phase, and wherein said light-sensitive material is to permanently remain in said second phase after said activating. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification