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7529385 |
Marking articles using a covert digitally watermarked image
A marking system that includes forming at least one marking in or on an article, wherein the image formed is not visible to the unaided human observer, and further contains at least one digital... |
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7184569 |
Marking articles using a covert digitally watermarked image
A marking system that includes forming at least one marking in or on an article, wherein the image formed is not visible to the unaided human observer, and further contains at least one digital... |
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US20070269652 |
Optical Disk
The present invention provides an optical disk that has a substrate, an information recording layer or an information-recording unit, a semi-transparent reflection layer and an image-recording... |
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US20070145735 |
Marking articles using a covert digitally watermarked image
A marking system that includes forming at least one marking in or on an article, wherein the image formed is not visible to the unaided human observer, and further contains at least one digital... |
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US20030005304 |
Marking articles using a covert digitally watermarked image
A marking system that includes forming at least one marking in or on an article, wherein the image formed is not visible to the unaided human observer, and further contains at least one digital... |
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7393623 |
Incorporation of markings in optical media
Optical media having markings that are non-interfering, or substantially non-interfering with readout of data from the optical media are disclosed. The optical media make use of certain... |
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US20080046908 |
Original glass plate, method of producing original glass plate, stamper for optical recording medium, and method of producing stamper
A disc-shaped original glass plate for producing a stamper for roughening a substrate of an optical recording medium, containing a circular 21st area within a radius D1 from the center of the... |
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US20090008257 |
METHOD OF PRODUCING STAMPER FOR OPTICAL RECORDING MEDIUM, METHOD OF PRODUCING SUBSTRATE, AND METHOD OF PRODUCING OPTICAL RECORDING MEDIUM
A method of producing a stamper for roughening a substrate of an optical recording medium contains the steps of placing a conductive ring having a hole at the center thereof on a major surface of... |
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US20090274034 |
OPTICAL RECORDING MEDIUM, VISIBLE INFORMATION RECORDING METHOD AND METHOD FOR USING DYE COMPOUND
There is provided an optical recording medium having, on a substrate, a visible information recording layer including a dye compound represented by Formula (1). In Formula (1), Ra1, Ra2, Ra3, Rb1,... |
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US20080237912 |
METHOD OF PRODUCING STAMPER FOR OPTICAL RECORDING MEDIUM, METHOD OF PRODUCING SUBSTRATE, METHOD OF PRODUCING OPTICAL RECORDING MEDIUM, AND APPARATUS FOR PRODUCING STAMPER FOR OPTICAL RECORDING MEDIUM
In a method of producing a stamper for roughening a substrate of an optical recording medium, a masking treatment is carried out prior to a blasting treatment, whereby a second pit forming site of... |
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US20080274332 |
Optical Recording Medium and Method for Manufacturing Same, Substrate and Method for Using Same, and Stamper and Method for Manufacturing Same
The present invention presents an optical recording medium capable of forming visible images of excellent visibility by using laser light, and a method for manufacturing the same. An optical... |
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7220535 |
Marking and authenticating articles
Disclosed herein are methods and apparatus for providing markings upon objects, including the read side of an optical information media, where the markings do not substantially interfere with... |