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7388825 |
Optical data storage and retrieval systems utilizing dual energy sources
An optical data storage and retrieval system that includes a phase change storage medium and dual energy sources. The phase change material may store information by undergoing a transformation from...
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7385907 |
Rewritable optical record carrier
A rewritable optical record carrier comprising a first substrate carrying a first recording stack of layers, which recording stack comprises, a first dielectric layer, a recording layer comprising...
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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...
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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...
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7359310 |
Optical recording medium
An optical recording medium includes a support substrate and two information recording layers, an information recording layer close to a light incidence plane through which a laser beam is...
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7358031 |
Optical information recording medium, optical information recording device and manufacturing method of optical information medium
A multilayer optical information recording medium includes optical information recording layers, and dielectric multilayer reflecting layers provided under the optical information recording layers...
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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...
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7351516 |
Optical information recording medium
An optical information recording medium, especially a CD-RW medium, that can undergo direct overwriting at high speed is disclosed. The optical information recording medium includes a transparent...
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7339880 |
Method of recording information to and reproducing information from an optical information storage medium
A method of recoding information on a reproduction-only optical information storage medium, including: forming a plurality of areas and at least one transition area on the reproduction-only optical...
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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...
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7327666 |
Optical recording medium and method of manufacturing same
An optical recording medium has a plurality of laminated information recording layers. The average reflectivity within a stipulated range in the unrecorded regions of at least one of the...
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7304930 |
Optical information recording medium and recording method using the same
An optical information recording medium 10 includes a first substrate 11 , a second substrate 12 disposed in parallel with the first substrate 11 , and an information layer 20 disposed...
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7302019 |
Maximum likelihood decoding method and maximum likelihood decoder
A maximum likelihood decoder includes metric generators for generating metrics based on a plurality of partial responses and a Viterbi decoder for realizing maximum likelihood decoding by using a...
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7292521 |
Optical data storage and systems utilizing plasmon lenses
A light-plasmon coupling lens including an optically transparent substrate having a light incident surface and a light-plasmon coupling surface opposite the light incident surface. The...
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7289418 |
Optical disk with erasable surface and manufacturing method thereof
An optical disk with an erasable surface of the present invention includes a transparent substrate, a recording layer, and a reflective layer, and an erasable writing layer. The recording layer is...
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7280456 |
Methods and apparatus for determining the state of a variable resistive layer in a material stack
A method and an apparatus for detecting a number of variation in resistance within a material stack in response to a scanning and injection of a non-contacting electron stream into a material...
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7277379 |
Information recording carrier
Plural grooves or lands formed in an information recording carrier include at least a wobbling region and data is recorded wobblingly in this wobbling region by phase shift modulation while...
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7263056 |
Apparatus and methods for securing information in storage media
The methods described herein are directed at securing information in storage media such as optical discs, magnetic disks or a combination thereof. In particular the methods describe embedding a...
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7263055 |
Method of recording and reproducing information and apparatus for recording and reproducing information using the method
A method of recording and reproducing information in a phase-change optical recording medium by irradiation of an electromagnetic wave for recording, reproducing and/or rewriting information is...
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7245820 |
Method and system for selecting chapter boundaries for digital video recordings
A method for selecting a chapter boundary for a digital video recording is provided that includes examining cut-rates for the recording. A determination is made regarding whether a default chapter...
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7245577 |
Optical information recording apparatus and optical information recording medium
An optical information recording medium includes a recording layer for recording optical information, a plurality of laminated layers, and a substrate for supporting those layers, while a beam of a...
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7241549 |
Information recording medium
An optical recording medium configured with a light reflection layer; a first protection layer; a recording layer containing a phase-change material which changes between crystalline and amorphous...
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7238460 |
Optical recording medium, production method thereof and method of using same
Disclosed is an optical recording medium, comprising a polymer alloy forming a phase-separated domain structure of a coating object, and a volatile substance interacting with the polymer alloy. The...
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7236440 |
Optical recording medium
A high-speed, write-once type optical recording medium, which utilizes laser light that is either blue or an even shorter wavelength, as well as an optical recording method and an optical recording...
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7227832 |
Optical recording medium and method of recording information to optical recording medium
It is an object of the present invention to provide an optical recording medium that is suitable for recording information therein at a high velocity. An optical recording medium according to the...
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7227643 |
Surface plasmon excitation device and microscope including the same
A device for exciting surface plasmons includes a light illuminating source, a transparent substrate having a ridge, a metal layer covering side surfaces of the ridge and their neighboring region,...
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7203150 |
Optical recording medium and its recording system
An optical recording medium and a recording system for the same are provided, which can dissipate heat produced by a laser beam during recording operations to thereby increase the erasing power...
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7180848 |
Optical information recording medium
An optical information recording medium is composed of at least a phase-change type recording layer 4 provided on a substrate 1 . The optical information recording medium is conducted to record...
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7179982 |
Musical composition reproduction method and device, and method for detecting a representative motif section in musical composition data
The present invention provides a music playback system which uses an interface to easily play back a characteristic musical structure section with a music audio data playback apparatus. The...
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7175086 |
Authentication system, data device, and methods for using the same
An authentication system may comprise: a first light source, a second light source, and at least three optically filtered light sensing devices. The first light source can have a first light source...
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7166415 |
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...
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7154841 |
Optical information recording medium
When initializing first and second information layers on a phase-change optical disk of the one-side multilayered configuration, a mistake occurs depending on thin film configuration of first and...
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7124441 |
Method and apparatus for securely associating an optically readable memory with a user machine
A CD-ROM has an obscurable section wherein exists a photosensitive mask material layer or constituent operative to alter the optical properties of areas subjected to prolonged exposure to the...
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7113474 |
Increased data storage in optical data storage and retrieval systems using blue lasers and/or plasmon lenses
An optical recording medium includes a crystallizing layer for enhancing the crystallization of a phase change memory layer, an energy storage layer for aiding the state transformations of a phase...
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7102990 |
Optical information-recording medium and optical information recording/reproducing method
An optical information-recording medium comprises (a) a disk-shaped substrate having a first main surface and a second main surface opposite to the first main surface; an incidence surface of the...
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7102977 |
Phase-change optical recording medium and recording method and apparatus for the same
An optical recording medium has a phase-change recording layer containing Sb and Te as essential elements therefor, to which is added at least one element selected from the group consisting of Ag,...
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7099262 |
Rewritable recording medium capable of changing the length and start position of synchronization portion
A rewritable recording medium having a first adjustment region recorded with first signal information, a data portion recorded with data information after the first adjustment region, and second...
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7092343 |
Optical recording and reproducing method and apparatus having multiple recording layers
An optical recording medium having two or more information recording layers in which information is recorded at a high recording density. The optical recording medium is comprised of information...
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7075884 |
Optical recording apparatus capable of changing the length of synchronization portions
A method for recording information on a rewritable recording medium includes recording first synchronizing signal information in a first synchronizing signal portion on the rewritable recording...
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7035190 |
Method of recording/reproducing information on a recording medium with plural phase change recording layers
An information recording medium includes a first information layer and a second information layer. The first information layer includes a first recording layer in which a reversible phase change is...
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7011925 |
Three-dimensional optical memory
The present invention is directed to a three-dimensional memory apparatus for storing information in a volume comprising of an active medium. The active medium is capable of changing from a first...
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7009930 |
Optical information recording medium, method of recording and reproducing, and optical recording and reproducing system
At least one information layer including a recording layer contains a material that can exhibit a transition between two optically different states in response to irradiation with a laser beam as a...
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7002896 |
Information recording medium and method for producing the same, and method for recording/reproducing information thereon
An information recording medium includes a first information layer and a second information layer. The first information layer includes a first recording layer in which a reversible phase change is...
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6999396 |
Initialization method of optical recording medium
An initialization method of an optical recording medium having a plurality of optical recording layers capable of reducing initialization unevenness due to light interference caused at the time of...
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6999392 |
Optical recording method and optical recording medium
Increase of jitter in a phase change optical recording medium is suppressed with no extreme decrease in the crystallization speed of the recording layer when the medium is overwritten at a high...
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6975575 |
Data storage media and methods utilizing a layer adjacent the storage layer
A data storage unit includes a data storage layer with multiple storage areas having a storage medium disposed thereon that changes between a plurality of states for writing and reading...
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6956810 |
Phase change optical information recording medium
A phase change optical information recording medium including: a substrate; and a recording layer which is located overlying the substrate and in which marks are to be formed to store information,...
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6956809 |
Multilayer phase-change type optical disc capable of recording and reproducing information at high transfer rate
The present invention is a multilayer optical disc formed of a plurality of information recording sections having a phase change recording layer. A first information recording section provided at a...
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6956804 |
Optical recording medium with recording marks having different states, and method of recording using the optical recording medium
An optical recording medium having a higher improved read accuracy is disclosed. In the case of irradiating a laser beam to an optical recording medium including an optical reflective layer and a...
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6952392 |
Laser reactive dyes for DVD copy protection system
A method and system for providing copy-protected optical medium using transient optical state change security materials capable of changing optical state when exposed to a wavelength of about 630...
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