Matches 1 - 50 out of 209 1 2 3 4 5 >


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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...
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...
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...
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...
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...
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...
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...
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,...
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...
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...
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...
US20140056120 Replica Disk for Data Storage  
Data storage replica disks having a surface relief pattern with replica lands and replica grooves are provided.
US20130121128 REPLICA DISK FOR DATA STORAGE  
Data storage replica disks having a surface relief pattern with replica lands and replica grooves are provided.
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...
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...
US20080019260 ANTI-PIRACY FOR ROM OPTICAL DISKS  
A Blu-ray Discâ„¢ 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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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,...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...

Matches 1 - 50 out of 209 1 2 3 4 5 >