Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Having layered storage medium

Subclass of:

369 - Dynamic information storage or retrieval

369093000 - SYSTEMS HAVING PLURAL PHYSICALLY DISTINCT INDEPENDENT TRACKS ON A SINGLE STORAGE MEDIUM SURFACE

Patent class list (only not empty are listed)

Deeper subclasses:

Entries
DocumentTitleDate
200802854142D Storage with Guard Band Storing Non-Content Information - The invention applies to a 2D storage medium carrying meta-tracks of N (N>1) bit-rows, two adjacent meta-tracks being separated by a guard band of at least one bit-row referred to as guard band bit-row. The invention proposes to store non-content information in the guard band bit-row. The non-content information are clock data and/or control data.11-20-2008
20080259761Information recording medium - An optically detectable information recording medium is at least comprised of a substrate and a recording layer, wherein a surface of the recording layer opposite to another surface of the recording layer in contact with the substrate has a Root Mean Square roughness Rσ of less than 5 nm, and wherein the recording layer has highly reflective recording material selected from aluminum, silver, silicon, titanium, nickel, tantalum, molybdenium, iron, gold, copper, and their alloys.10-23-2008
20090122682RECORDING AND/OR REPRODUCING METHOD, RECORDING AND/OR REPRODUCING APPARATUS AND INFORMATION STORAGE MEDIUM - An information storage medium including two or more recording layers to reproduce or record data by using a same reproducing and/or recording optical system per layer includes error correction code (ECC) blocks recorded onto the two or more recording layers by using two or more data formats used to store user data.05-14-2009
20090154320Optical recording medium and information recording method - An optical recording medium has a multi-layer structure recording layer structure recording layer portion including plural recording layers provided with tracks for guiding a recording light and being adapted to record data, where recording condition information and recording layer identification information for the recording layers are recorded on the tracks as information signals. Test writing is conducted on a recording layer that is subject to recording to derive a suitable recording condition based on recording condition information that is recorded on the recording layer, and direct recording is conducted according to a direct recording condition.06-18-2009
20090141608OPTICAL RECORDING MEDIUM WITH BRAILLE CHARACTERS AND METHOD OF MANUFACTURING THE SAME - The invention discloses an optical recording medium comprising a first substrate, a second substrate, a median layer and an adhesive layer. A plurality of Braille characters is formed on the second substrate by injection molding. The median layer is formed on the first substrate. The second substrate is adhered to the median layer by the adhesive layer. Accordingly, a visually-impaired person can easily identify the contents in the optical recording medium by touching the Braille characters on the second substrate.06-04-2009
20090116359OPTICAL SCANNING DEVICE - An optical scanning device for scanning an information layer of a first optical record carrier having a first cover layer thickness and an information layer of a second optical record carrier having a second, different cover layer thickness. The device includes an objective lens system for converging a radiation beam on the information layers. The objective lens system includes a first lens element and a second lens element spaced apart along an optical axis. The objective lens system further includes a switchable optical element comprising a first fluid, and a chamber positioned between said first lens and said second lens. The objective lens system is switchable between a first configuration in which the first fluid occupies an optically active portion of the chamber such that the objective lens system has a first focal length for scanning the information layer of the first optical record carrier, and a second configuration in which the first fluid does not occupy the optically active portion of the chamber such that the objective lens system has a second, different focal length for scanning the information layer of the second optical record carrier. The objective lens system is arranged to satisfy the condition: Focal05-07-2009
20090109824Information-processing apparatus, information-recording apparatus, information-processing system, information-recording method, program for information recording, and storage medium - An apparatus for processing information is disclosed. The apparatus requests for recording of user data into an information-recording apparatus for recording in an information-recording medium having multiple recording layers, each of the layers having a data area for recording the user data. The medium has a first recording layer to be a reference for determining a position of the data area in each of the recording layers, and a second recording layer excluding the first recording layer.04-30-2009
20090303854RECORDING MEDIUM, AND RECORDING AND REPRODUCING APPARATUS - A recording medium includes: at least one recording layer on which information is recorded by multi-photon absorption; and a servo layer disposed in a laminated direction with respect to the recording layer and having a track for guiding a beam spot of laser light having a first wavelength and a beam spot of laser light having a second wavelength along a scanning trajectory, wherein the servo layer and the at least one recording layer constitute a set of layers, and a plurality of sets of layers is formed in the laminated direction.12-10-2009
20090040899Information Recording Device and Method, Computer Program for Record Control, and Information Recording Medium - An information recording device (02-12-2009
20090092024OPTICAL INFORMATION RECORDING MEDIUM, IMAGE-RECORDING METHOD AND METHOD OF UTILIZING A DYE - An optical information recording medium comprises: a recording layer capable of recording and reproducing information by irradiation with a laser light; and an image recording layer capable of recording a visible image and containing a dye as a major component.04-09-2009
20090290467MULTILAYER INFORMATION RECORDING MEDIUM - A multilayer information storage medium according to the present invention includes: a substrate; at least three information storage layers, which are stacked one upon the other on the substrate; a plurality of transparent layers, each of which is arranged between its associated adjacent ones of the information storage layers; and a transparent coating layer. At least two of the transparent layers have mutually different thicknesses. If a laser beam with a wavelength of 400 nm to 410 nm is incident perpendicularly on the medium through the transparent coating layer, two of the information storage layers that sandwich the thinnest one of the transparent layers have a higher returning light intensity and/or a higher degree of modulation than the other information storage layers.11-26-2009
20090067310STORAGE MEDIUM, PREFERABLY FOR A CARRIER, AND READING DEVICE AND METHOD FOR READING THE STORAGE MEDIUM - The invention relates to a storage medium, preferably a carrier. The aim of the invention is to make manipulation of data information of the storage medium or of non-authorized copies of the storage medium visible. For this purpose, the storage medium comprises a transparent layer and a layer produced from an opaque material, the layer of the opaque material having a section with a medium transmittance between 0% and 100% which is semi-transparent to electromagnetic radiation and an informative content comprising the value of the medium transmittance being stored in the storage medium.03-12-2009
20080310278De-Icing of Multi-Layer Storage Media - A device for recording information on a record carrier (12-18-2008
20090034387OPTICAL STORAGE MEDIUM AND PLAYER - An optical storage medium that allows the user to recognize a given disk as a hybrid one, no matter whether the disk is loaded into a single format player or a multi-format player, is provided. The optical storage medium includes a stack of first and second storage layers with mutually different storage densities. Management information indicating the presence of the second storage layer is stored on the first storage layer.02-05-2009
20090034389Multilayer Element With an Identification Which Can Be Read Optically by a Machine - Described is a multi-layer body (02-05-2009
20090034388Multi-Format Optical Storage Medium, Optical Pickup, and Optical Read/Write Device - There is provided a storage layer (02-05-2009
20090231976METHOD AND DEVICE FOR EXTENDING INTERACTIVITY TO MULTIPLE STORAGE MEDIA - A method of providing interactivity over a set of multiple optical storage media (09-17-2009
20090296554INDOLIUM COMPOUND AND OPTICAL RECORDING MATERIAL - An indolium compound is represented by formula (I):12-03-2009
20090086602OPTICAL INFORMATION REPRODUCING METHOD, OPTICAL INFORMATION REPRODUCING APPARATUS AND OPTICAL INFORMATION RECORDING MEDIUM - Reproduction on an optical recording medium having plural information layers involves the problem of distortion occurring due to interlayer crosstalk and hence deterioration in the quality of a readout signal. At a predetermined radius, a correction coefficient for correcting the amount of fluctuation components is calculated from a readout signal with distortion due to the interlayer crosstalk, and then is stored. The stored correction coefficient is used to eliminate crosstalk components and to correct readout signal fluctuation during reproduction on a predetermined area. In this way, the original readout signal without interlayer crosstalk components can be obtained, so that good-quality reproduction characteristics can be achieved.04-02-2009
20090116361Recording Method, Recording and Reproducing Method, Reproducing Method, Recording Device, Recording and Reproducing Device, and Reproducing Device for Optical Information Recording and Reproducing Medium, and the Optical Information Recording and Reproducing Medium - Optical information recording and reproducing medium 05-07-2009
20090207712OPTICAL RECORDING MEDIUM AND METHOD OF RECORDING VISIBLE INFORMATION - The present invention relates to an optical recording medium comprising a visible information recording layer comprising a dye denoted by the following general formula (I) on a support. In general formula (I), A denotes a substituted or unsubstituted heterocyclic group, substituted aliphatic group, or substituted or unsubstituted carbon ring group, and B denotes a substituted or unsubstituted heterocyclic group or a substituted or unsubstituted aryl group. The optical recording medium may further comprise a recording layer capable of recording and/or reproducing information by irradiation of a laser beam. The present invention further relates to a method of recording visible information on the visible information recording layer of the optical recording medium, wherein the visible information is recorded by using the same laser bean as that used in recording on the above recording layer.08-20-2009
20090141609MULTI-LAYERED OPTICAL RECORDING MEDIUM AND METHOD FOR OPTICAL RECORDING AND READING - A multi-layered optical recording medium is provided of which the manufacturing costs is significantly reduced. The multi-layered optical recording medium has multiple information recording layers and at least two layers of the information recording layers have the same medium-side address information. This configuration allows for reducing the types of master stampers and thus reducing manufacturing costs.06-04-2009
20090022029Information recording medium, apparatus and method for recording information, and computer program - Disclosed is an information recording medium (01-22-2009
20090262624OPTICAL DISK APPARATUS - Provided is an optical disk apparatus which optimizes a frequency of a high frequency superimposing operation upon reproduction so that good reproduction performance is realized in a wide irradiation power range of a laser power. The optical disk apparatus includes: a semiconductor laser device; an optical disk discrimination circuit for performing laser discrimination; a driver device including a drive circuit for supplying direct drive current to the semiconductor laser device and a high frequency superimposing circuit for superimposing high frequency current on the drive current; and a high frequency superimposing variable circuit for changing a frequency of the high frequency current in which when information is reproduced, the high frequency superimposing variable circuit sets the frequency of the high frequency current for reproducing a multi-layer disk to be higher than the frequency of the high frequency current for reproducing a single-layer disk.10-22-2009
20090262623OPTICAL MEDIA FORMAT - Apparatuses, products, devices and methods, of manufacture consistent with the invention include optically readable media with at least one mechanism, chemical, agent, and/or process for limiting the time period that at least a portion of encoded information can be read and/or accessed by an optical beam and/or reader capable of reading the encoded information.10-22-2009
20090296555METHOD AND DEVICE FOR RECORDING INFORMATION ON A MULTILAYER INFORMATION CARRIER - The invention discloses a method and a device for recording information on a multi layer optical disc using a multi session format. The use of multi sessions allows for an efficient use of the storage capacity of the disc, and for a fast finalization time.12-03-2009
20080212444Multi Layer Record Carrier Comprising Compatibility Information and Method for Recording Such Compatibility Information on a Record Carrier. - Multi layer record carrier comprising compatibility information, and method for recording such compatibility information on a record carrier.09-04-2008
20080212446Optical Disk, Program, Recording Medium, Information Recording Apparatus and Recording Method - A method for recording information in a rewritable optical disk having plural recording layers is disclosed. The method includes the steps of selecting either a first recording mode dedicated to recording the information in an order applicable for recordable type optical disks or a second recording mode dedicated to recording the information in an order applicable for read-only type optical disk, and recording the information in the rewritable optical disk in accordance with the selected recording mode.09-04-2008
20080212447OPTICAL INFORMATION RECORDING MEDIUM, OPTICAL INFORMATION RECORDING METHOD, AND OPTICAL INFORMATION RECORDING APPARATUS - An information recording medium according to the present invention includes a plurality of recording layers, and a test area for determining a recording power of a laser light for each of the plurality of recording layers, in which a first test area of a first layer and a second test area of a second layer adjacent to the first layer are provided at different radial positions.09-04-2008
20080212445Information Recording Method and Information Recording Apparatus for Recording Medium - A recording method for recording data in basic reproduction unit to a recording medium having a first recording layer and a second recording layer, includes detecting a size of an unrecorded region of the first recording layer while recording data in the basic reproduction unit (ex. “Cell” unit) in the first recording layer, comparing the size of the unrecorded region of the first recording layer with a specified value (allowable maximum size of the basic reproduction unit, or size of data about to be recorded in the first recording layer), and stopping recording in the first recording layer at the boundary of the basic reproduction unit when the size of the unrecorded region is smaller than the specified value, and recording a subsequent data in the second recording layer.09-04-2008
20100103793MULTILAYER OPTICAL INFORMATION RECORDING MEDIUM, METHOD FOR RECORDING INFORMATION IN THE MULTILAYER OPTICAL INFORMATION RECORDING MEDIUM, RECORDING/REPRODUCING APPARATUS - The present invention provides a novel physical structure for a multilayer optical information recording medium including a plurality of information recording layers, and a recording method and a recording/reproduction apparatus for such a recording medium using the same. The multilayer optical information recording medium according to the present invention includes a test recording area for performing test recording for data recording and/or reproduction conditions in at least one of an inner zone and an outer zone. The test recording area is categorized as one of at least two categories of test recording areas (OPC-A area and OPC-B area). In the OPC-B area, an upper limit value is set on a recording power for the test recording.04-29-2010
20100157769Optical recording medium for retail activation - An optical recording medium to be used for a retail activation solution is proposed. The optical recording medium is a modified ROM disk that can only be played after the application of an activation process. For this purpose at least a part of a reflective layer of a read-only area of the optical recording medium is replaced by a light sensitive layer stack that changes its reflectivity upon illumination.06-24-2010
20080239919DISC MEDIUM AND DISC DEVICE USING THE SAME - A multi-layer disc medium includes two or more reproducing or recording and reproducing layers. One or more layers have a layer information area portion formed by at least a part of a circular path extending circumferentially of the layer. The circular paths have a center coincident with a center axis of rotation of the disc medium and are at substantially identical radial positions from the center axis of rotation of the disc medium. Layer information capable of identifying a layer concerned is disposed on at least the part of the circular path on the layer. By reading the layer information at an inter-layer transference, verification of an accessed layer can be performed simply and quickly, leading to a simple and quick inter-layer transference.10-02-2008
20090003176Information recording apparatus, information reproducing apparatus, information recording method, information reproducing method, and optical information recording medium - An information recording apparatus for recording information on a multi-layered optical information recording medium having a recording material, which has light reaction property and which changes quality due to heat generated by an irradiated light, and having an altered layer in which the recording material is already altered and a non-altered layer in which the recording material is not yet altered alternately existing in plurals is provided. The information processing device includes a light source for emitting a recording light having a predetermined wavelength; a focal position control unit for controlling a focal position of the recording light emitted from the light source; and an objective lens, arranged at a post-stage of the focal position control unit, for collecting the recording light; wherein the recording material at the focal position is altered through heat by the recording light to record information on the recording medium as a recording mark.01-01-2009
20090003175Information Recording Apparatus and Method, and Computer Program for Recording Control - An information recording apparatus (01-01-2009
20080232220OPTICAL 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.09-25-2008
20080273442Method and Apparatus for Recording Information on a Multi-Layered Optical Disc - A method is described for recording information on a multi-layered optical disc (11-06-2008
20080279080Optical storage medium and method of producing optical storage medium - An optical storage medium has a substrate and a cover layer that allows light to pass therethrough in recording or reproduction. Provided between the substrate and the cover layer are at least a reflective film, a first dielectric film, a recording film, and a second dielectric film formed in this order from the substrate side. Provided further between the second dielectric film and the cover layer is a damp-proof film that is at least partially an amorphous film and contains at least an indium oxide.11-13-2008
20080279078Split Disc Optical Storage Medium and Device - Optical data storage medium comprising a first disc (11-13-2008
20080285415Optical Information Recording Medium and Method for Manufacturing the Same - A transparent protective layer (11-20-2008
20080285417Optical Information Recording Medium and Method for Recording to the Same - An optical information recording medium with favorable recording/reproducing characteristics and corrosion resistance is offered. To this end, the optical information recording medium of the present invention comprises in this sequence at least substrate 11-20-2008
20080285418Optimized media structure for bit-wise multi-layer optical data - An optical medium including a plurality of data layers stacked relative to each other in a dielectric medium. A respective data layer including mark and land regions for having information recorded thereon. A mark region and a land region in the respective data layer are disposed beside each other and have substantially the same optical path length across respective thicknesses of the mark region and the land region. A method and computer program product associated with forming the optical medium which determines whether an admittance curve for a material to be used as the mark region forms an intersection with a desired admittance curve based on the admittance of a land region disposed beside the mark region, and determines a thickness of the material based on the intersection.11-20-2008
20080285416Method for Multilevel Recording Information on a Record Carrier a Record Carrier and a Recording Device - A record carrier comprises three layers that react with each other when irradiated to form a mark on the record carrier. The three layers are separated by a two separating layers that prevent direct contact of the three layers thus providing stability to the record carrier. By irradiating one or both separating layers a region of those separating layers is destroyed or altered whereby an opening is created and the reaction of the layers adjacent to the separating layer is no longer prevented in that region and a mark can be formed. Since either one or two reactions can take place if one or both separating layers are destroyed or altered multiple reflection levels for a mark can be obtained, thus enabling multilevel recording where a single mark can represent more information compared to the situation where only two reflection levels can be obtained. The size of the resulting opening determines the size of the mark and can thus be used to create a very small mark allowing high density recordings.11-20-2008
20080304391METHOD AND AN APPARATUS FOR RECORDING INFORMATION, AND AN INFORMATION RECORDING MEDIUM - In a method for recording information on an information recording medium having a data recording area for storing user data and a test area used for test recording by a recording apparatus, it is detected whether the test area is unusable when executing the test recording. The test recording is executed in the test area when the test area is detected not to be unusable, or executed in the data recording area when detected to be unusable. Management information relating to the test recording executed in the data recording area is recorded in a predetermined area. Hence, it is possible to eliminate a limit of number of times of test recording which depends on the size of the test recording area.12-11-2008
20080279079Optical Recording Medium - The main object of the present invention is to provide an optical recording medium with no need to use a control subject substance of the PRTR law, capable of using for an optical recording device with a blue laser, and giving consideration to the environmental aspect.11-13-2008
20090003173Recording Medium and Method and Apparatus for Recording Data on the Same - AV stream files and original management files are initially recorded in a first data recordable area of an optical disc. After the recordation of the original management files in the first data recordable area, at least one backup management file is recorded in a second recordable area of the disc. When associated original file system information is recorded in the first data recordable area after the recordation of the backup management file, backup file system information is recorded in a third data recordable area. All of the first, second, and third data recordable areas are closed after the recordation of the backup file system information.01-01-2009
20080267034(Re) Writable Disk with Electrophoetic Ink Label - A storage medium for storing digital information is disclosed. The storage medium comprises a label comprising a light addressable electrophoretic ink layer. Further, a method for labeling a storage medium provided with an electrophoretic ink label is disclosed. The method comprises the steps of applying a voltage between a first and a second electrode being arranged on mutual sides of a electrophoretic ink layer; irradiating selected pixel areas of the electrophoretic ink for addressing a change of visual state. Further, a recorder for an optical storage medium and a label writer for labeling an optical storage medium are disclosed. The recorder and the label writer comprise a light source and a charging device. The charging device is arranged to apply an electric field across an electrophoretic ink layer of the storage medium, and the light source is arranged to write a label on said storage medium by addressing pixel areas of said electrophoretic ink layer.10-30-2008
20080316891Optical Scanning Device - An optical scanning device (12-25-2008
20080316892Hybrid Optical Disc - An optical storage medium (12-25-2008
20090059759TRANSMISSIVE OPTICAL RECORDING MEDIUM, HOLOGRAM RECORDING DEVICE AND HOLOGRAM RECORDING METHOD - A transmissive optical recording medium includes: a first recording layer including a recording material capable of fixing record of information; a second recording layer including a recording material capable of fixing record of information; and a polarizing plate between the first recording layer and the second recording layer.03-05-2009
20090016187SECURE OPTICAL INFORMATION DISC HAVING A MINIMIZED METAL LAYER - A secure optical data disc comprising an electronic article surveillance tag embedded within a layered disc structure comprising first and second substrates is disclosed. The tag is placed within a non-readable zone (i.e., one that does not have data tracks) of the secure disc. To improve signal quality of the tag, the reflective metal layer thickness is minimized and discontinuities are introduced on the reflective metal layer. A first discontinuity separates a data track region of the disc from a mirror/ID band region. A second, radial discontinuity opens the mirror/ID band ring.01-15-2009
20090086601Methods and apparatus for merging pre-rendered and dynamic optical-storage label indicia - An optical storage disc label recorder includes a first memory portion adapted for storing a first set of track-marking data, the first set of track-marking data defining one or more pre-defined images, each pre-defined image having one or more pre-defined fields for dynamic text content, a second memory portion for storing a second set of track-marking data including the dynamic text content, and a digital processor adapted for combining the first and second sets of track-marking data.04-02-2009
20090097376OPTICAL DISC, ITS REPRODUCING DEVICE, RECORDING DEVICE, MANUFACTURING METHOD, AND INTEGRATED CIRCUIT - An optical disc (04-16-2009
20090245064COMBINATION OPTICAL MEDIA, DEVICE AND METHOD FOR ACCESSING THEREOF - A combination optical disc (10-01-2009
20080259760Multilayer Optical Recording Medium and Manufacturing Method Thereof - The present invention is directed to a multi-layered optical recording medium adapted to satisfy reflection factor required at the time of recording/reproduction of digital data based on the standards of CD (Compact Disc) and DVD (Digital Versatile Disc), wherein a first transparent base (10-23-2008
20080259759Optical Disc Having Combined Rom/R Area - A record carrier has information represented by high density read-only marks in a track. The read-only marks (10-23-2008
20090274029OPTICAL PICKUP AND INFORMATION DEVICE - An optical pickup (11-05-2009
20100260026MULTILAYER OPTICAL DISC - In a multi-layer optical disc, having three (10-14-2010
20100177617METHOD AND DEVICE FOR REDUCING A PERCEIVED DISCONTINUITY IN A CONTINUOUS DIGITAL INFORMATION STREAM - A method and a device are disclosed for reducing a perceived discontinuity in a continuous digital information stream read back from a first (LO) and a second (L07-15-2010
20100260027METHOD AND DEVICE FOR WRITING A MULTI-LAYER OPTICAL DISC - A method is described for writing an optical disc (10-14-2010
20090116360OPTICAL RECORDING MEDIUM, OPTICAL RECORDING DEVICE, AND OPTICAL REPRODUCING DEVICE - An optical recording medium has a first recording layer, and a second recording layer contiguous to the first recording layer in a laminated direction. A recording operation is performed with respect to the first recording layer and the second recording layer in such a manner that frequency bands of reproducing signals are different from each other.05-07-2009
20100208563INFORMATION RECORDING MEDIUM, REPRODUCING APPARATUS AND REPRODUCING METHOD - An information recording medium according to the present invention includes at least three information recording layers. If the readout power of a laser beam in reading information from an information recording layer L(n) is identified by Pw(n), and if the readout power of the laser beam in reading information from an information recording layer L(n+a) is identified by Pw(n+a), then a base thickness between the information recording layers is determined so that the intensity of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n) becomes equal to or lower than that of the light when the information recording layer L(n+a) is irradiated with a laser beam having the readout power Pw(n+a).08-19-2010
20100118679MULTI-LAYER OPTICAL DISCS - An optical record carrier (05-13-2010
20090073845OPTICAL RECORDING MEDIUM - An optical recording medium using Sn as the recording material to improve the jitter is provided, in which on the surface of a disc substrate 03-19-2009
20090073844METHOD OF RECORDING DATA IN MULTILAYERED RECORDABLE OPTICAL RECORDING MEDIUM, RECORDING AND REPRODUCING APPARATUS FOR RECORDING THE DATA IN THE RECORDING MEDIUM AND THE RECORDING MEDIUM - A method of recording data in a multilayered recordable optical recording medium is disclosed. When test recording is executed in a multilayered recordable optical recording medium having N recording layers (N is an integer of 2 or more), a test recording range in a test recording area of an (m+1)03-19-2009
20090003174Information Recording Medium and Method of Manufacturing the Same - An information recording medium with high recording sensitivity, superior repeat overwriting capability and favorable signal storage stability during information recording is offered. For this purpose, information recording medium 01-01-2009
20090147650RECORDING APPARATUS AND RECORDING METHOD, AND COMPUTER PROGRAM - A recording apparatus for recording record data onto a recording medium on which a plurality of recording layers are formed in a thickness direction, is provided with: a recording device for recording the record data into each of the plurality of recording layers by emitting each of a plurality of recording light beams to be focused on a corresponding one of the plurality of recording layers; a calculating device for calculating a leaked beam feature of another recording light beam, which is emitted to be focused on another recording layer other than one recording layer of the plurality of recording layers, leaking to the one recording layer; and an adjusting device for adjusting an emission condition of at least one of the plurality of recording light beams, on the basis of the calculated leaked beam feature.06-11-2009
20080291804Information Recording Layer of Optical Disc and Optical Disc - An optical disk includes a substrate covered with an information recording layer. The information recording layer includes a recording material and a dispersion material dispersed in the recording material. The recording material absorbs recording light for recording information, and then generates heat. As the light refraction index of the recording material changes due to the heat generation, information is recorded on the recording material. The dispersion material has lower absorptance of the recording light and lower thermal conductivity than the recording material, and an external dimension smaller than a diffraction limit of reading light for reading information.11-27-2008
20080291805INFORMATION RECORDING/REPRODUCING APPARATUS AND INFORMATION RECORDING/REPRODUCING METHOD - According to one embodiment, a start-up process performed when information is read from a hybrid disc in which two or more recording layers of different formats are integrally formed, a recording layer is limited to a specific recording layer of the hybrid disc, settings in a start-up state are changed to make it possible to execute the start-up process to read information recorded on the limited recording layer, and in the changed start-up process, information is read from the specific layer of the hybrid disc by an interface conforming to ATAPI, and a start-up time required to display or reproduce a read output is reduced.11-27-2008
20090073843Planar optical waveguide for heat assisted magnetic recording - An optical waveguide includes a core guiding layer, a cladding layer adjacent to the core guiding layer, a reflective layer, and a multiple layer stack on the reflective layer. The multiple layer stack includes a periodic arrangement of dielectric bilayers that each include a first dielectric layer and a second dielectric layer. An index of refraction n03-19-2009
20090010130OPTICAL DISK DRIVE AND METHOD OF CONTROLLING THE SAME - An area unused for recording the information is detected in an information recording layer that is the layer jump destination of an optical disk having a plurality of information recording layers. In the current information recording layer, a laser beam is temporarily moved to a position corresponding to the area unused for information recording, and thereafter, a layer jump operation is carried out.01-08-2009
20110044147WRITEALE OPTICAL RECORDING OF MULTI-LEVEL ORIENTED NANO-STRUCTURE DISCS - A method of performing writable optical recording of a medium to form multilevel oriented nano-structures therein, comprises steps of providing a disc-shaped, writable recording medium having a planar surface; and encoding data/information in the medium by forming a plurality of multilevel nano-structured pits in the surface by scanning with a focused spot of optical energy to form at least one data track therein, including scanning the optical spot in a cross-track direction while rotating the disc about a central axis.02-24-2011
20110242956MULTI-PURPOSE HIGH-DENSITY OPTICAL DISK - 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 side of the substrate. The second half-disc is bonded by an adhesive to a second side of the substrate of the first half-disc. In addition, a cover layer is formed over the first reflective layer. The cover layer has a thickness of approximately 0.1 mm. The substrate of the first half-disc has a thickness in a range of 0.3 mm to 1.0 mm. The first and second half-discs together have a combined thickness in a range of 0.8 mm to 1.3 mm.10-06-2011
20090323493MULTILAYER OPTICAL RECORDING MEDIUM, RECORDING DEVICE, AND RECORDING LASER POWER ADJUSTMENT METHOD - A multilayer optical recording medium includes three or more recording layers formed in a thickness direction. Trial writing areas provided in the respective recording layers to adjust the power of recording laser are formed not to overlap at a position in a planar direction in adjacent ones of the recording layers. Further, the trial writing areas are formed to have an overlapping portion at a position in the planar direction in one of the recording layers and at least another one of the recording layers not adjacent to the one of the recording layers.12-31-2009
20100061210OPTICAL DISC AND RECORDING/REPRODUCING METHOD AND APPARATUS FOR THE OPTICAL DISC - An optical disc, and a recording/reproducing method and apparatus to record information on the optical disc. The optical disc includes an optical information storage layer, including a layer format region and a user data region. The layer format region is divided into virtual layers that are disposed at different depths. The virtual layers include layer information to distinguish the virtual layers from one another.03-11-2010
20100135141INFORMATION RECORDING MEDIUM AND METHOD FOR REPRODUCING THE INFORMATION FROM THE SAME - The present invention has an object of providing an optical information recording medium including three or more information layers, which allows information to be reproduced from all the information layers at high quality, and a method for reproducing information from such an information recording medium. The reflectance of a third information layer 06-03-2010
20090028028OPTICAL DISC, AND INFORMATION RECORDING/REPRODUCING METHOD AND INFORMATION RECORDING/REPRODUCING APPARATUS USING THE SAME - The present invention provides a method for recording/reproducing information on/from an optical disc, wherein the optical disc has a first to an n-th recording layers (n is an integer of 2 or greater) laminated on a substrate, each of the first to the n-th layers having data regions segmented into a first to an m-th data zone groups (m is an integer of 2 or greater) along a radial direction of the optical disc, each of the first to the m-th data zone groups including at least one data zone, the method comprising the steps of: a) recording/reproducing information in/from data zone groups from a j-th data zone group of a first recording layer to a j-th data zone group of an n-th recording layer; and b) repeating step a) for j=1, 2, . . . , m.01-29-2009
20090213714INFORMATION RECORDING MEDIUM, AND APPARATUSES FOR REPRODUCING, RECORDING, AND RECORDING AND REPRODUCING THEREOF, AND METHODS FOR REPRODUCING, RECORDING, AND RECORDING AND REPRODUCING THEREOF - An information recording medium comprises a substrate, a second recording layer, a second light transmitting layer, a first recording layer for recording different information from that to be recorded in the second recording layer, and a first light transmitting layer. The second recording layer is formed with a continuous second microscopic pattern of grooves. The first recording layer is formed with a continuous first microscopic pattern of grooves that is different from the second microscopic pattern. Both sidewalls of raised portions of the first and second microscopic patterns are formed with wobbling so as to be parallel with each other. Auxiliary information and a reference clock is recorded on these sidewalls alternately and continuously.08-27-2009
20100097913INFORMATION RECORDING METHOD AND INFORMATION RECORDING APPARATUS - An information recording method for a multi-layered optical recording medium that can form information recording layers in 3 layers or more. When all the information recording layers are blank, the information recording layer that is the closest to the light incident surface is irradiated with a laser beam to start recording. High quality information recording is thus implemented in consideration of adherence of foreign matters and occurrence of scratches.04-22-2010
20090245065OPTICAL DISC DEVICE AND FOCUS CONTROL METHOD - A focus control section first performs a reference focus control process in which a reference optical beam is focused on a reference layer of an optical disc according to the result of receiving a reference reflection optical beam, and then switches from the reference focus control process to an information focus control process in which an information optical beam is focused on a mark layer of the optical disc according to the result of receiving an information reflection optical beam.10-01-2009
20090022030OPTICAL INFORMATION MEDIUM - An optical information medium includes a substrate and a recording layer formed on the substrate. The recording layer includes a first recording film formed of a first material that has Si as a main constituent and a second recording film that is formed of a second material that has Cu as a main constituent and to which Sn is added, the second recording film being formed in a periphery of the first recording film. Data is recorded onto and reproduced from the recording layer by irradiation of the recording layer with a laser beam.01-22-2009
20080310279Rewritable phase-change optical recording medium - A rewritable phase-change optical recording medium is provided, which includes a substrate, a first information layer, a spacer layer, a second information layer, and a cover layer. The second information layer includes a recording film containing Sb as a main component and V or V and In as second components. When an amorphous mark formed in the recording film is irradiated with a reproduction beam, crystallization of the amorphous mark occurs only in a central portion in the width direction of the amorphous mark. The width direction is orthogonal to the scanning direction of the laser beam. The recording film is formed of a material that exhibits a change in degree of modulation of 5% or less when recorded information is repeatedly reproduced. The change in degree of modulation is a change from when the number of times of reproduction is 100,000 to when it is 400,000.12-18-2008
20080316890Optical Recording Medium, Recording and Reproducing Method Thereof, and Optical Recording Apparatus - The present invention relates to an optical recording medium containing a first substrate, a first information layer, an intermediate layer, a second information layer and a second substrate in this order, wherein the first information layer contains a first recording layer disposed on the first substrate and the second information layer contains a reflective layer, a second recording layer containing an organic dye and a protective layer which are disposed on the second substrate in this order; and the second recording layer contains an organic dye which is at least one elected from the group consisting of the specified squarylium metal chelate compounds.12-25-2008
20080253255Magnetic Recording Medium and Production Method Thereof - The magnetic recording medium of the present invention has a pattern formed using a pattern-forming agent in a laminate of multiple layers including a base material and a magnetic recoding layer, wherein the pattern is recognized on the surface of the laminate opposite to the base material, and the pattern-forming agent is distributed through the thickness of the laminate, wherein a region between the center of the magnetic recording layer and a magnetic recording-reading side of the laminate has an area having a density gradient of the pattern-forming agent which gradually declines in the direction from the center of the magnetic recording layer to the magnetic recording-reading side.10-16-2008
20080205233Predicting Dvd Recordable Recording Parameters in Dual Layer Discs - A method and apparatus for adjusting operating conditions when shifting from a first layer to a second layer during recording of a dual layer DVD. During calibration of the first layer before recording, parameters for differential laser power and beta target between the two layers are obtained from information fields of the disk. The distance between the layers is measured. When shifting from layer one to layer two, the laser power and beta target for layer two are obtained by using the current values immediately before shifting with addition of the differential obtained during calibration. The focus signal is adjusted by adding the difference compensated for temperature deviations. The tilt signal is unamended. In this way, the shift between layer one and layer two can be performed fastly without separate calibration.08-28-2008
20080205234Method and Apparatus for Recording on a Multi-Layer Disc - A recording method, particularly suitable for use in a digital video-camera, is described according to which a digital signal (08-28-2008
20090323492INFORMATION RECORDING MEDIUM, AND APPARATUSES FOR REPRODUCING, RECORDING, AND RECORDING AND REPRODUCING THEREOF, AND METHODS FOR REPRODUCING, RECORDING, AND RECORDING AND REPRODUCING THEREOF - An information recording medium comprises a substrate, a second recording layer, a second light transmitting layer, a first recording layer for recording different information from that to be recorded in the second recording layer, and a first light transmitting layer. The second recording layer is formed with a continuous second microscopic pattern of grooves. The first recording layer is formed with a continuous first microscopic pattern of grooves that is different from the second microscopic pattern. Both sidewalls of raised portions of the first and second microscopic patterns are formed with wobbling so as to be parallel with each other. Auxiliary information and a reference clock is recorded on these sidewalls alternately and continuously.12-31-2009
20080273441Optical Data Storage Medium and Combi-Foil Cover for the Production Thereof - An optical data storage medium is described comprising at least: —a synthetic resinous substrate, having a first side and a second opposite side, —a first layer stack comprising: a data storage layer stack formed on the first side of the substrate, a transparent cover stack formed on the data storage layer stack, the data storage layer stack being readable through the cover stack by means of a focused radiation beam. A second layer stack having a permeablity for moisture <0.5 g/m11-06-2008
20090028027OPTICAL RECORDING MEDIUM, METHOD FOR RECORDING/REPRODUCING INFORMATION TO/FROM OPTICAL RECORDING MEDIUM AND APPARATUS FOR RECORDING/REPRODUCING INFORMATION - The present invention provides an optical information medium capable of suppressing the influence of reflection light from an unnecessary information recording face and effectively eliminating spherical aberration at the time of recording/reproducing information to/from a recording medium having a plurality of information recording faces. When reflectance of an information recording face is αh and transmittance between information recording faces is th, ah and th of the optical information medium are set so as to satisfy ((α(h−1)01-29-2009
20090059758OPTICAL INFORMATION RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME - To provide an optical information recording medium having an information layer of excellent transmittance and signal intensity, an optical information recording medium 03-05-2009
20100008202OPTICAL INFORMATION RECORDING MEDIUM, RECORDING PARTICLE, METHOD FOR REPRODUCING OPTICAL INFORMATION, OPTICAL INFORMATION REPRODUCING APPARATUS, METHOD FOR RECORDING OPTICAL INFORMATION, AND OPTICAL INFORMATION RECORDING APPARATUS - An optical information recording apparatus includes a recording layer, wherein nanoparticles having diameters of 100 nm or less are disposed while being surrounded by a medium having a complex dielectric constant which is changed in accordance with an application of light and the degree of local plasmon resonance produced by the nanoparticles is changed in accordance with the change in the complex dielectric constant of the medium.01-14-2010
20090016188MULTI-LAYER INFORMATION RECORDING MEDIUM, INFORMATION RECORDING/REPRODUCING DEVICE AND MULTI-LAYER INFORMATION RECORDING MEDIUM MANUFACTURING METHOD - By assuring lower compatibility with information recording media already on the market or of known formats, information is recorded/reproduced on/from a multi-layer information recording medium of a new format using an information recording/reproducing device already widely in use. The multi-layer information recording medium includes a plurality of layered information planes L01-15-2009
20090003177Information recording apparatus, information reproducing apparatus, information recording method, information reproducing method, and optical information recording medium - An information recording apparatus for recording information on a multi-layered optical information recording medium having a recording material, which changes quality according to light intensity of an irradiated light, and having an altered layer in which the recording material is already altered and a non-altered layer in which the recording material is not yet altered alternately existing in plurals is provided. The information recording apparatus includes a light source for emitting a recording light having coherency; a light path branching unit for branching a light path of the light into a first light path and a second light path; focal position control units for controlling focal positions of the light in the first and the second light path; and objective lenses for collecting the lights in the first and the second light path on the recording medium.01-01-2009
20080298204Optical disc drive apparatus - An optical disc drive apparatus, for recording/reproducing upon/from an optical disc medium having a plural number of recording layers, comprises a recording/reproducing element, which is configured to irradiate a laser upon the optical disc medium, to as to conduct recording/reproducing thereon/from, wherein recording is conducted within a region of an arbitrary range on the optical disc medium by means of the recording/reproducing element, and the region is used for moving an optical spot of the laser irradiated from the recording/reproducing element when recording/reproducing data thereon/from.12-04-2008
20080298203OPTICAL INFORMATION RECORDING MEDIUM AND METHOD OF FABRICATING THE SAME - Proposed are a method of fabricating an optical information recording medium that can prevent the degradation of the appearance caused by a hardening resin entering between a center cap and a substrate due to capillary action, and an optical information recording medium using a substrate for implementing the method.12-04-2008
20110038244WRITING METHOD FOR MULTILAYER OPTICAL DISC - A writing method for a multilayer optical disc. The method includes: measuring and recording optimum internal gains obtained when the objective lens is located on each inner side of the pick-up head, respectively, checking the writing direction based on the specific writing direction on each data layer of the disc, selecting the inner optimum internal gain when the writing direction is toward outside, and selecting the opposite inner optimum internal gain when the writing direction is toward inside to minimize the offset of the tracking error signal.02-17-2011
20080232221Optically variable magnetic stripe assembly - An optically variable magnetic stripe assembly includes a magnetic layer, an optically variable effect generating layer over the magnetic layer, and an electrically non-conductive reflective layer between the magnetic layer and the optically variable effect generating layer.09-25-2008
20080225668INFORMATION RECORDING MEDIUM, RECORDING APPARATUS, REPRODUCTION APPARATUS, RECORDING METHOD, AND REPRODUCTION METHOD - An information recording medium is provided, which comprises a plurality of recording layers and a first disc information area for storing parameters relating to access to the plurality of recording layers and formats relating to the plurality of recording layers. The first disc information area is provided in a first recording layer which is one of the plurality of recording layers.09-18-2008
20080225667INFORMATION RECORDING MEDIUM, RECORDING APPARATUS, REPRODUCTION APPARATUS, RECORDING METHOD, AND REPRODUCTION METHOD - An information recording medium is provided, which comprises a plurality of recording layers and a first disc information area for storing parameters relating to access to the plurality of recording layers and formats relating to the plurality of recording layers. The first disc information area is provided in a first recording layer which is one of the plurality of recording layers.09-18-2008
20080219126MULTI-LAYERED INFORMATION RECORDING MEDIUM, RECORDING APPARATUS, AND RECORDING METHOD - A multi-layered information recording medium including a plurality of recording layers, the multi-layered information recording medium comprising: a user data area for recording user data; and a plurality of spare areas including at least one replacement region, wherein when the user data area includes at least one defect region, the at least one replacement region may be used in place of the at least one defect region, wherein a first spare area of the plurality of spare areas is positioned so as to be contiguous to a first user data area of a first recording layer, a second spare area of the plurality of spare areas is positioned so as to be contiguous to a second user data area of a second recording layer, and the first spare area and the second spare area are positioned approximately at the same radial position on the multi-layered information recording medium.09-11-2008
20080219125MULTI-LAYERED INFORMATION RECORDING MEDIUM, RECORDING APPARATUS, AND RECORDING METHOD - A multi-layered information recording medium including a plurality of recording layers, the multi-layered information recording medium comprising: a user data area for recording user data; and a plurality of spare areas including at least one replacement region, wherein when the user data area includes at least one defect region, the at least one replacement region may be used in place of the at least one defect region, wherein a first spare area of the plurality of spare areas is positioned so as to be contiguous to a first user data area of a first recording layer, a second spare area of the plurality of spare areas is positioned so as to be contiguous to a second user data area of a second recording layer, and the first spare area and the second spare area are positioned approximately at the same radial position on the multi-layered information recording medium.09-11-2008
20080219124Information Recording and Reproducing Apparatus and a Method of Controlling an Information Recording and Reproducing Apparatus - An information recording and reproducing apparatus records data on and reproduces data from each of a plurality of recording layers of a recording medium. A controller (09-11-2008
20080205235Optical-pickup-adjustment optical disk, method of adjusting optical pickup device, and method of producing optical pickup device - An optical-pickup-adjustment optical disk used for adjusting or producing an optical pickup device, includes a transparent protective substrate; and an optical-pickup-adjustment middle-depth information recording layer formed on a side of an inside surface of the transparent protective substrate, wherein the optical-pickup-adjustment middle-depth information recording layer is formed to have a middle depth which is a center of the maximum depth of the maximum-depth information recording layer prescribed by the optical disk standard and the minimum depth of the minimum-depth information recording layer prescribed by the optical disk standard.08-28-2008
20080198721Method of Recording Data on a Dual-Layer Optical Write-Once Disc - The present invention relates to a method of recording data on a dual-layer optical write-once disc (08-21-2008

Patent applications in class Having layered storage medium