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US20090067316 |
Method and system for recordable DVDS
Methods, systems and computer program products for causing recordable DVD storage media to be identified as non-recordable DVD storage media by a DVD drive are described. Data used to identify a... |
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US20090274029 |
OPTICAL PICKUP AND INFORMATION DEVICE
An optical pickup (100) includes: (i) a light source (101) for emitting a laser beam; (ii) an optical system (105, etc.) for introducing the laser beam into one of recording layers; (iii) an... |
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US20090303850 |
OPTICAL DISC MEDIUM AND OPTICAL DISC DEVICE
When using an optical disc medium that includes pit trains having their widths narrower than a diffraction limit, it is difficult to detect a tracking error signal and take a tracking-servo... |
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US20100027406 |
OPTICAL STORAGE MEDIUM COMPRISING TRACKS WITH DIFFERENT WIDTH AND RESPECTIVE PRODUCTION METHOD
The optical storage medium comprises a substrate layer and a data layer with a mark/space structure arranged in tracks, wherein a sequence of marks of a first track have a first width, and a... |
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US20050213482 |
Multi-track mastering techniques
Mastering techniques are described that can improve the quality of a master used in data storage disk manufacturing. In particular, multi-spot mastering techniques and interferometric mastering... |
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US20060023623 |
Optical disk and information playback apparatus
In an example of the present invention, an optical disk includes groove tracks and land tracks which are alternately arranged in the radial direction of the disk. A track width of each of the... |
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US20080181093 |
OPTICAL DISC AND REGISTERING METHOD FOR LABEL SIDE THEREOF
The invention provides an optical disc and a registering method for labeling on a label side of the optical disc. More particularly, the label side has a plurality of turns of wobbled grooves... |
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US20090238056 |
OPTICAL STORAGE EFFECT USING A SEPARATE REFERENCE BEAM INTERFACE
The present invention relates to a data medium to be read out by a focused reading beam having a predetermined wavelength. The data medium implements a new concept of generating a reference beam,... |
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US20050063293 |
Optical disk with tracking grooves similar to blazed grating
The proposed the multilayer optical disk with slant tracking grooves, which are similar to the blazed diffraction grating grooves. The different incline of the grooves in the neighbor layers of... |
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US20070211615 |
INFORMATION STORAGE MEDIUM
An information storage medium 100 according to the present invention includes a track 10 that wobbles in a predetermined period and a plurality of pre-pits 21 and 22, which are arranged adjacent... |
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US20050018555 |
Disc-shaped optical recording medium and reproduction limit method thereof
A disk type optical recording medium that can limit the reproduction by a disk drive connected to a computer without drastically changing the specifications of recorded information on the medium... |
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US20140056120 |
Replica Disk for Data Storage
Data storage replica disks having a surface relief pattern with replica lands and replica grooves are provided. |
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US20130121128 |
REPLICA DISK FOR DATA STORAGE
Data storage replica disks having a surface relief pattern with replica lands and replica grooves are provided. |
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US20100008211 |
Information reproducing apparatus and information reproducing method
An information reproducing apparatus has a medium with a linear tracking mark extending in a scanning direction and a linear data mark extending in a direction orthogonal to the scanning... |
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US20090262620 |
METHODS AND DEVICES FOR DETECTING WOBBLES ON AN OPTICAL DISC
A device for detecting wobbles on an optical disc is provided, where the device is utilized for generating a wobble signal according to a plurality of detection signals. The device includes an... |
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US20080019260 |
ANTI-PIRACY FOR ROM OPTICAL DISKS
A Blu-ray Disc™ optical disk for video and/or audio applications comprises a data layer having in-pits recessed into a surface of at least one data layer and on-pits elevated above the surface of... |
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US20050281187 |
Optical memory device and optical reproducing device
An optical disk includes a plurality of information units, each of which has a pit array made up of a phase pit on an information track and phase pits surrounding the phase pit. With this... |
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US20050141399 |
Method of recording, and apparatus to record, address information on disc-type information storage medium, and disc-type information storage medium therefor
A disc-type information storage medium, and a method of recording and apparatus to record address information on the disc-type information storage medium, the storage medium including data... |
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US20050094547 |
Master disk exposure apparatus and master disk exposure method
In Two-dimensional optical Compensation Exposure method, Beam 1, which has an intensity not less than a sensitivity of a photoresist layer and has a predetermined irradiation timing of exposed... |
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US20070030793 |
Method and radiation source driving device for controlling radiation power
The invention pertains to a method for controlling radiation power of a radiation source (26), comprising the steps of a) driving the radiation source (26) in a first mode comprising the substeps... |
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US20070025233 |
Information carrier having wobble pre-groove
The present invention relates to an information carrier for storing user-data, said information carrier comprising a wobbled pre-groove having stored a wobble information and comprising sinusoidal... |
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US20100002568 |
High-density information storage apparatus
A system is provided. The system includes an information storage medium including a substrate and a plurality of pit trains formed on the substrate at a track pitch between 0.64 and 0.67... |
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US20080298222 |
Hard disk media having alignment pattern and alignment method
Embodiments of the invention provide patterned media in which the center and the direction of the disk can be detected. According to one embodiment, patterned media has a bit pattern including... |
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US20060120264 |
Disk substrate and optical disk
A data area to record and/or reproduce data and an eccentricity measuring area 14 in which a groove area formed with spiral grooves and a planer mirror area are spatially alternately arranged are... |
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US20090129252 |
RECORD MEDIUM, ITS MANUFACTURING METHOD, MOTHER DISC FOR RECORD MEDIUM, AND ITS MANUFACTURING METHOD
Binary information previously recorded in an innermost rim side area is enabled to be stably reproduced. A record medium is formed by sequentially laminating a first information layer 2, an... |
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US20100226226 |
OPTICAL DISK, OPTICAL DISK DEVICE, OPTICAL DISK DEFECT REGISTERING METHOD, OPTICAL DISK RECORDING METHOD, AND OPTICAL DISK REPRODUCING METHOD
An optical disc 1 according to the present invention has a first defect management area 6, to which a first kind of defect management information about non-permanent defects may be added, and a... |
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US20050117470 |
Optical disk drive, information reproducing method and information storage medium
An optical head is fed to the innermost area of an optical disk, and then fed to the outside while a detector circuit measures the frequency of a read signal supplied from the optical head. When... |
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US20090323507 |
APPARATUS AND METHOD FOR CONVERTING GROOVE/LAND POLARITY UPON GROOVE/LAND TRACK CHANGE ON OPTICAL MEDIUM
The present invention discloses an apparatus for converting a groove/land polarity on an optical medium, which comprises a physical identification (PID) detector detecting a first sector into a... |
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US20060098565 |
Recording medium, wobble cycle detection method, wobble information detection method, wobble information detection circuit, and information recording/reproduction device
The present invention is structured so that a track of a recording medium is divided into a carrier wave area that is continuously wobbled by a carrier wave wobble of a specific carrier wave... |
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US20050190686 |
Recordable optical disc and method for manufacturing a mother disc thereof
A recordable optical disc and a method for manufacturing a mother disc thereof are proposed. The recordable optical disc comprises a substrate with a spiral groove wobbled in a fixed period. The... |
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US20090129235 |
OPTICAL PICKUP DEVICE
The present invention provides an optical pickup device requiring no position adjustment of a diffraction grating at the time of assembling the optical pickup device, and capable of suppressing... |
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US20080043595 |
Information Recording Medium, Mastering Device, Identification Information Recording Device, Identification Information Reproduction Device, Mastering Method, Identification Information Recording Method, and Identification Information Reproduction Method
Identification information is recorded by irradiating a laser beam to a predetermined area of an information recording medium by securely changing a land to a pit. A pair of land and pit is formed... |
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US20110038248 |
OPTICAL STORAGE MEDIUM COMPRISING INVERTED SUPER-RESOLUTION PITS AND LANDS
The optical storage medium comprises a substrate layer, a data layer having a pit/land data structure with data arranged in tracks on the substrate layer, and a nonlinear layer with a... |
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US20050030838 |
Magneto-optical recording medium
A magneto-optical recording medium for MSR reproduction of a high signal quality wherein both faces of a land and a groove are used as recording tracks is disclosed. A magneto-optical recording... |
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US20070147220 |
Multiple-spiral hybrid disc for e-book applications
The invention relates to an optical disc (10) comprising a hybrid information layer with at least two congruently adjoining spirals, whereby a first spiral (12) of said adjoining spirals comprises... |
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US20070153669 |
Method for adjusting light diffusing and light focusing capability of an optical element
The present invention provides a method of adjusting light diffusing and light focusing capability of an optical element. First, an optical substrate having a first surface area is provided. Then,... |
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US20060159001 |
Mastering apparatus, mastering method and optical recording medium
A mastering apparatus for forming a pit string based on recording data on an optical-recording-medium master by a heat recording method using laser-light irradiation, the mastering apparatus. The... |
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US20050169162 |
Optical disc having a substrate with micro-embossments for tracking guides
An optical disc includes a substrate having micro-embossments, in which flat portions referred to as lands, and track guides, referred to as hills, and which protrude from the surfaces of the flat... |
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US20050088954 |
Optical recording medium and optical storage device
An optical recording medium having recording tracks consisting of a plurality of lands and a plurality of grooves, wherein the diameter of a laser beam to be used for recording/reproduction on a... |
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US20050286401 |
ROM-type optical recording medium and stamper for manufacturing ROM-type optical recording medium
In a ROM-type optical recording medium including a substrate 2 having a plurality of concave pits 2a formed on a surface thereof, a light transmission layer 4, and a reflective layer 3 formed... |
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US20090262640 |
OPTICAL DISC MANUFACTURING METHOD, DISC MASTER MANUFACTURING METHOD, AND OPTICAL DISC
An optical-disc manufacturing method including the steps of: fabricating a pre-exposure disc master by forming, on a substrate, a heat accumulation layer having a thickness of 17% or less of a... |
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US20050232130 |
Production method for photoresist master, production method for optical recording medium-producing stamper, stamper, phtoresist master, stamper intermediate element and optical recroding medium
A stamper (36) used for fabricating an optical recording medium is fabricated by forming a convexo-concave pattern (22) without development of a photoresist layer (16). A fabrication method of the... |
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US20060104194 |
Optical information-recording medium
An optical information-recording medium, which is provided with a substrate and a light-absorbing layer formed of a dye material on the substrate, includes a user information area in which a... |
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US20050036439 |
Accommodating additional data on an optical data carrier disk
An optical data carrier disk reader is adapted for detecting a slope of a wall in a data track of an optical disk. An optical disk has pits (811, 812), having walls with at least two different... |
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US20050254404 |
Manufacturing method of stamper master disc to produce optical recording medium
When a stamper master disc 1 to produce an optical recording medium is manufactured, the concavities and convexities corresponding to the pits of a finally obtained optical recording medium are... |
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US20100085864 |
METHOD FOR MANUFACTURING READ-ONLY OPTICAL DISC MEDIUM AND READ-ONLY OPTICAL DISC MEDIUM
An information signal area on an information signal recording surface is provided as pits on a mirror in accordance with modulated information data, and is covered with a metal alloy reflective... |
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US20080013416 |
Drive and Method for Determining the Type of Optical Record Carrier
The present invention relates to a drive for accessing an optical record carrier (2) comprising means (4) for determining the type of record carrier, in particular for distinguishing a read-only... |
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US20100142362 |
HIGH DENSITY OPTICAL DISK AND REPRODUCTION/TRACKING CONTROL METHOD
When a method for increasing density by providing a tracking guide such as a land/groove and introducing a plurality of strings of super-resolution pits into one track thereof is applied to a... |
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US20050048252 |
Substrate and storage media for data prepared therefrom
A disk substrate prepared from a blend of poly(arylene ether) resin and poly(alkenyl aromatic) resin is disclosed. The substrate can be used in data storage media having dimensional stability and... |
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US20070206449 |
Optical storage medium, manufacturing method for optical storage medium, and optical storage device
Recording density is improved by performing anneal processing on an optical storage medium (4). Anneal management information (40) is recorded in the optical storage medium (4) without performing... |