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8788848 Optical DNA  
The claimed subject matter relates to architectures and/or mechanisms that can facilitate issuing, embedding and verification of an optical DNA (o-DNA) signature. A first mechanism is provided for...
8758980 Optical information recording medium and method of recording and/or reproducing therein  
An optical information recording medium 1 is constructed by sequentially layering a reflective layer 11, a protective layer 12, a recording layer 13, a protective layer 14, and a light...
8685621 First-side dual-layer optical data storage disk and method of manufacturing the same  
An optical data storage disk includes a central substrate and on each side of the substrate a pair of metal/alloy recording layers separated by a transparent layer.
8582415 Multilayer optical recording medium  
An object of the present invention is to increase the number of stacked layers in a multilayer optical recording medium while simplifying the design of the multilayer optical recording medium is...
8530140 Optical information recording medium and method for manufacturing the same  
An optical information recording medium of the present invention includes at least a recording layer (4) that allows information to be recorded thereon and/or reproduced therefrom by being...
8526292 Manufacturing method for optical recording medium, optical recording medium, optical information device, and information reproducing method  
Shape-wise thicknesses of a cover layer and first through (N−1)th intermediate layers of an optical recording medium having refractive indexes nr1, nr2 are converted into thicknesses t1, t2 of the...
8470514 Information recording medium and method for manufacturing the same  
A low-cost information recording medium is provided by which good recording quality can be obtained even when information is recorded thereon in a high density using a blue laser. The recording...
8451708 Manufacturing method for optical recording medium, optical recording medium, optical information device, and information reproducing method  
Shape-wise thicknesses of a cover layer and first through (N−1)th intermediate layers of an optical recording medium having refractive indexes nr1, nr2 are converted into thicknesses t1, t2 of the...
8264944 Manufacturing method for optical recording medium, optical recording medium, optical information device, and information reproducing method  
An optical recording medium includes a cover layer, a plurality of recording surfaces, and a plurality of intermediate layers. The thicknesses of the layers are specifically determined and set at...
8241834 Optical recording medium and production method therefor, and sputtering target and production method therefor  
An optical recording medium includes a substrate having features that define track regions, an optical recording layer disposed on the substrate, and a light-transmitting layer disposed on the...
8189452 Manufacturing method for optical recording medium, optical recording medium, optical information device, and information reproducing method  
Shape-wise thicknesses of a cover layer and first through (N−1)th intermediate layers of an optical recording medium having refractive indexes nr1, nr2 are converted into thicknesses t1, t2 of the...
8144568 Information recording medium, information recording apparatus and method, and information reproducing apparatus and method  
An information recording medium (100) is provided with (i) a read only area (ROA1 and the like) whereupon read only information is previously recorded by forming embossed pits; (ii) a data area...
8130628 Manufacturing method for optical recording medium, optical recording medium, optical information device, and information reproducing method  
Shape-wise thicknesses tr1, tr2, . . . , and trN of a cover layer and first through (N−1)-th intermediate layers of an optical recording medium having refractive indexes nr1, nr2, . . . , and nrN...
8014261 Optically-readable disk with copy protection device  
An optically-readable disk includes a device that disrupts readability of the disk when the disk is spun at an angular velocity substantially greater than required to play the disk in its intended...
8014262 Optical information recording medium  
An optical information recording medium includes a substrate having a through-hole provided at the central portion thereof and a guiding groove provided on a surface at the light-incident side; a...
7995452 Thin optical data storage media with hard coat  
This disclosure describes thin optical media that may be compliant with conventional DVD drives. Unlike conventional DVDs, however, the described media does not include the non-information bearing...
7986611 High-density optical recording media and method for making same  
The present disclosure provides a high-density optical storage medium which comprises a substrate structure having a thickness of 1.0 mm or more and including one or more information layers, a...
7944806 Method for modifying optical path on optical recording medium having distortion regions  
Theft, distribution, and piracy of digital content on optical media (software, video, audio, e-books, any content of any kind that is digitally stored and distributed) is often accomplished by...
7944804 Optical disk recording method, optical disk device, program, and recording medium  
In an optical disk recording method adapted to record information on an optical disk by a light beam incident to the disk in one direction, the disk has a plurality of rewritable recording layers...
7916619 Optically-readable disk with copy protection device  
An optically-readable disk includes a device that disrupts readability of the disk when the disk is spun at an angular velocity substantially greater than required to play the disk in its intended...
RE42222 Reversible optival information-recording medium  
Phase-change type, reversible optical information recording medium, being possible for recording, reproducing, erasing, and rewriting of information, by use of a laser beam. This invention,...
7869328 Optical disk and optical disk reproducing device  
To provide an optical disk and an optical disk reproducing device capable of preventing sub information from being illegally copied and altered. An optical disk includes an optical disk substrate...
7859983 Optical disk and optical disk recording and reproducing device  
An optical disk includes a plurality of disk sheets which are laminated, and each of which has a recording face on one of the surfaces and a flat back surface, wherein the plurality of disk sheets...
7858290 Information recording medium and method for manufacturing the same  
An information recording medium includes a substrate and an information layer formed on the substrate. The information layer includes a recording layer whose phase can be changed between a...
7800993 Optical recording medium, recording method thereof and evaluation method of optical recording medium  
A recording method of an optical recording medium comprises irradiating the medium with a laser having m pulse sets each comprising a heating pulse and a cooling pulse, in which m is a natural...
7782746 Optical information recording medium and method for manufacturing same  
An optical information recording medium that has a simple structure and with which warpage is kept to a minimum even under environmental changes over a wide range, and a method for manufacturing...
7697407 Multilayer optical recording medium and method for recording information in multilayer optical recording medium  
A multilayer optical recording medium enabled to retain an ideal signal regenerating property in spite of accidental adhesion of finger mark or alien substance is provided. The multilayer optical...
7684309 Multi-purpose high-density optical disc  
An optical recording medium includes a first half-disc and a second half-disc. The first half-disc includes a substrate and an information layer (including a reflective layer) formed on a first...
7680025 Optical information recording medium, reproducing method thereof, and manufacturing method thereof  
Super-resolution technology was proposed for generating marks smaller than the optical resolution in order to record data at high density on the optical disk. However, the achievable high density...
7659049 Phase-change recording material used for information recording medium and information recording medium employing it  
A phase-change recording material used for an information recording medium utilizing a crystalline state as a non-recorded state and an amorphous state as a recorded state, which has the...
7601481 Multilayer phase-change information recording medium, and method for recording and reproducing using the same  
The object of the present invention is to provide a multilayer phase-change information recording medium comprises a substrate, and N layers of information layer (N represents an integral number...
7583580 Optical recording medium as well as optical recording and reproduction method  
An optical recording medium illuminated by light from a light source as near-field light using a focusing lens whose numerical aperture exceeds 1 to perform recording and/or reproduction is...
7566523 Optical information-recording media and optical information-recording/reproduction apparatus  
Optical information-recording media comprise a first transparent substrate through which a laser beam enters, a first information-recording layer deposited on the first transparent substrate, a...
7542401 Birefringence characteristic measuring method, optical recording medium and optical information recording/reproducing apparatus  
Four types of optical systems, a polarization optical system including an objective lens having a high numerical aperture, a polarization optical system including an objective lens having a low...
7422838 Phase-change optical recording medium  
A phase-change optical recording medium is disclosed including a supporting substrate and the following contiguous layers formed on the supporting substrate in the order recited such as a first...
7420908 Optical recording medium  
An optical recording medium including two or more recording layers which are capable of transmitting at a high transmittance recording light or reproducing light for performing...
7406005 Optical recording medium, memory apparatus, and recording/reproduction method  
An optical recording medium having at least a recording film and a protection film disposed on a substrate is disclosed. The optical recording medium includes a plurality of recording tracks being...
7394751 Optical storage system optical storage medium and use of such a medium  
A description is given of an optical storage system comprising an optical storage medium (1) and an optical head device (6). The medium has a substrate (2), a recording stack (3) and an optically...
7384723 Optical information recording medium  
An optical information recording medium including a substrate having successively disposed thereon a recording layer, an interlayer, a pressure sensitive adhesive layer and a cover film in which...
7385740 Hologram recording medium  
There is provided a hologram recording medium having: a recording layer at which a hologram can be recorded by illumination of writing light; and a protective layer provided on the recording layer...
7376073 Optical storage medium having distortion regions, and a method of modifying an optical storage medium to include distortion regions  
Theft, distribution, and piracy of digital content on optical media (software, video, audio, e-books, any content of any kind that is digitally stored and distributed) is often accomplished by...
7368222 Optical data storage media with enhanced contrast  
Disclosed is an optical data storage medium with enhanced contrast. The optical data storage medium includes a substrate having oppositely facing first and second surfaces. A first metal/alloy...
7370367 Security device and article incorporating same  
A compact disc (10) for a computer incorporates a security device for preventing non-authorized reading of data carried by the disc. The security device includes an LCD laser blocker (16) which is...
7368223 Multi-stack optical data storage medium and use of such a medium  
A multi-stack optical data storage medium for rewritable recording by a focused laser-light beam, the medium having a substrate with deposited on aside thereof: a first recording stack comprising...
7366081 Information recording medium  
An information recording medium according to the present invention includes a recording layer that is formed of a single layer of a single type of recording material and is directly sandwiched by...
7352680 Optical recording medium having relation between reflection layer and pit length  
An optical information recording medium including a substrate, a light absorbing layer which is located overlying the substrate and in which marks are formed to store information and a light...
7341820 Optical information recording medium  
The present invention is an optical information recording medium comprising a substrate having disposed in an order thereon a recording layer, an interlayer, and a cover layer, wherein recording...
7335459 Phase-change optical recording medium  
A phase-change optical recording medium includes a phase-change optical recording film that permits reversible phase change between a crystalline phase and an amorphous phase upon irradiation with...
7295508 Optical disk  
The present invention provides an optical disc which is constituted by a substrate, a recording layer, and a protection layer and is irradiated with a laser beam from the protection layer side....
7294446 Digital analog recording using near field optical imaging  
A data storage device and method of making the storage device wherein a digital and analog image may be stored thereon. The storage device includes a photosensitive layer capable of retaining an...

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