Class / Patent application number | Description | Number of patent applications / Date published |
720718000 | OPTICAL STORAGE MEDIUM STRUCTURE | 85 |
20080209460 | Disc Structure and Method For Manufacturing Same - An object of the present invention is to provide a disk structure and a disk-structure manufacturing method that are capable of preventing the degradation of a signal-to-noise ratio resulting from the occurrence of an eddy current. | 08-28-2008 |
20080209461 | Small Cartridge Free Optical Disc With High Level of Redundancy and Tolerance For Missing Data - In the invention, e-book information is distributed on un-cartridged small media that can be made cheaply enough for use in free distribution of information. The e-book information is encoded and stored on a read-only optical disc that is 2 to 4 cm in diameter and 0.6 to 1.2 mm thick, the information being encoded with sufficient redundancy and sufficient tolerance for missing information that the disc can be conveniently handled and pocketed without losing reliability of information access. The disc has a lead-in area that is prior to all the e-book information and that contains a disc navigation area, and a lead-out area that follows all the e-book information. The disc may include multiple partitions, each partition containing sufficient access information for independent access of the e-book information within the partition without accessing any other partition. Alternatively, the disc may include multiple slots for files and that are equally spaced. For example, to provide data redundancy, at least some of the partitions are duplicate partitions that contain all the same data as another duplicate partition, and the disc navigation area contains partition descriptors that indicate all the partitions and the areas allocated to each of the partitions, and the disc also includes duplicates of the partition descriptors, the duplicate partition descriptors being stored in the lead-in area or in the lead-out area to provide redundancy of navigation information. | 08-28-2008 |
20080244632 | Combination Type Optical Disk Medium, Its Reproduction Method and Optical Disk Apparatus - An optical disk apparatus for use with the combination type optical disk medium comprises an optical head capable of accessing the first and second recording layers and reading recording marks, a demodulator for applying a demodulation process to a signal read out of the first or second recording layer, an address converter for deciding from an optical disk reproduction instruction a recording layer to be accessed and performing conversion to a physical address of the recording layer, a reproduction controller following the recording layer determination and the physical address to control the optical head and the demodulator so as to control access and reproduction to and from the optical disk medium, and an instruction generator for generating an instruction to reproduce the optical disk. | 10-02-2008 |
20080256566 | Dual-Path Optical Recording Media and an Apparatus for Accessing Thereof - A dual-path optical recording medium and an apparatus for accessing such are disclosed. The dual-path optical recording medium includes a substrate, an intermediate recording layer, a holographic recording layer and a dichronic mirror layer. The intermediate recording layer is a rewritable data storage layer with a relatively low storage capacity. The holographic recording layer is a write-once data storage layer with a relatively high storage capacity. The dichronic mirror layer is located between the holographic recording layer and the intermediate recording layer. The apparatus for accessing the dual-path optical recording medium includes a first light module capable of generating a first laser light, and a second light module capable of generating a second laser light. | 10-16-2008 |
20080295125 | Microstructured surfaces for optical disk media | 11-27-2008 |
20080307449 | Rotating data carrier with detector wafer - A rotating data carrier with detector wafer is described. | 12-11-2008 |
20090089821 | LIMITED PLAY OPTICAL ARTICLE - An optical article for playback in a player includes at least one sector comprising a first control logic configured to set the value of a first register, the first register having a default value before it is set, and a non-default value after it is set, and a first command to be read sequentially after the sector. The first command is configured to direct the player to play a first content on the article if the first register is set to the default value and to direct the player to play a second content on the article if the first register is set to the non-default value. The optical article includes a mark containing an optical state change material disposed on the sector, wherein the mark is in one of a first optical state or a second optical state, and wherein the first control logic can be read only when the mark is in the second optical state. | 04-02-2009 |
20090144763 | Small form factor optical data storage disc and disc drive for use in mobile electronic device - An optical data storage disc measuring 32 mm in diameter contains 1 GB of data per layer. The data is designed to be readable by a disc drive that contains a blue wavelength laser, an objective lens having a numerical aperture of 0.72 and conventional DVD controller electronics. This combination of elements allows a full-length movie or a video game to be displayed with DVD-quality on a cell phone or other portable hand held device. | 06-04-2009 |
20090249381 | PLAYER-READABLE CODE ON OPTICAL MEDIA - An optical article for playback in a player includes a permanent player-readable code comprising a first set of a plurality of optically-detectable marks disposed on the optical article; a second set of plurality of optically-detectable marks disposed on a surface of the optical article; wherein the plurality of optically-detectable marks are in a pre-determined combination of a first state and a second state; and at least one first control logic comprising at least one sector; wherein each optically detectable mark is associated with a particular first control logic; wherein each first control logic is executed only when its associated optically-detectable mark is in a pre-determined state; wherein a customized player-readable code is determined using a combination of the plurality of optically-detectable marks and their associated first control logic; and wherein the optical article is activated when the customized player-readable code is in a pre-determined relationship with the permanent code. | 10-01-2009 |
20100107183 | OPTICAL DISC HAVING GAS FLOW SPOILER AND THE METHOD FOR FABRICATING THE SAME - An optical disc includes a round opening at the center of the optical disc, an annular recording section configured to record information, an annular supporting section between the round opening and the annular recording section and configured to support the optical disc, and a spoiler provided on a non-read/write side of the annular recording section and configured to disturb the flow field inside the optical disc drive when the optical disc is rotating, the spoiler having a centerline average roughness between 2 μm and 10 μm, a thickness between 0.02 mm and 0.05 mm, an area occupying at least 5% of the non-read/write side. The flow field so disturbed changes from a laminar state to a turbulent state and thus the read/write characteristics of the disc is improved due to lower air resistance experienced by the rotating disc. | 04-29-2010 |
20100235851 | Flexible Optical Disc with Outer Edge Ring - An optical disc includes a substrate with a hub, a data storage area, and an outer ring. The hub defines a center hole. The data storage area extends radially from the hub body and is thinner than the hub at the thickest hub portion. The outer ring protrudes down from the outer perimeter of the data storage area. Thicknesses of the outer ring and the data storage area are of a same order of magnitude. The outer edge of the optical disc thus includes the data storage area and the outer ring. | 09-16-2010 |
20110004891 | INFORMATION RECORDING DEVICE, INFORMATION REPRODUCING DEVICE, AND INFORMATION RECORDING MEDIUM - The invention provides an information recording device, an information reproducing device, and an information recording medium capable of securely protecting copyright of main information, and preventing illegal access to the recorded main information. The information recording device ( | 01-06-2011 |
20110202942 | OPTICAL INFORMATION RECORDING MEDIUM, METHOD OF RECORDING INFORMATION AND PHOTOSENSITIZER - An aspect of the present invention relates to an optical information recording medium comprising a recording layer, wherein the recording layer comprises a cationic dye and a polynuclear azo metal complex dye comprising an azo dye and a metal ion, and a method of recording information comprising recording information on the recording layer comprised in the optical recording medium, and conducting the recording by irradiation of a laser beam having a wavelength of equal to or shorter than 440 nm onto the optical information recording medium. Another aspect of the present invention relates to a photo sensitizer. | 08-18-2011 |
20110209165 | NEAR-FIELD OPTICAL DISK HAVING SURFACE PLASMON AMPLIFICATION BY STIMULATED EMISSION OF RADIATION - A near-field optical disk having surface plasmon amplification by stimulated emission of radiation (SPASER) is provided. The near-field optical disk having SPASER includes a transparent substrate, a first transparent dielectric thin film layer formed on the transparent substrate, a SPASER thin film layer formed on the first transparent dielectric thin film layer, a second transparent dielectric thin film layer formed on the SPASER thin film layer, a recording thin film layer formed on the second transparent dielectric thin film layer, and a third transparent dielectric thin film layer formed on the recording thin film layer. | 08-25-2011 |
20110209166 | HIGHLY ADAPTIVE RECORDING METHOD AND OPTICAL RECORDING APPARATUS - An optical disk recording method includes the steps of: providing a multi-pulse chain from a recording wave; independently changing the pulse rise timing and pulse fall timing (pulse width) of the first pulse in the multi-pulse chain in accordance with a preceding space length and a recording mark length; changing the pulse rise timing and pulse fall timing (pulse width) in accordance with a following space length and the recording mark length in a predetermined timing or in independence; and in relation to the smallest mark recorded by irradiation with mono pulse, changing the rise timing in accordance with the preceding space length and the recording mark length and the fall timing (pulse width) in accordance with the following space length and recording mark length, compensating various optical disks different in recording material without change of the fundamental waveform. | 08-25-2011 |
20110214140 | OPTICAL RECORDING MEDIUM, APPARATUS AND METHOD OF RECORDING/REPRODUCING DATA THEREON/THEREFROM, AND COMPUTER READABLE RECORDING MEDIUM STORING PROGRAM TO PERFORM THE METHOD - A recording medium on which a recording/reproducing unit block is recorded, an apparatus to record and/or reproduce data on/from the recording medium, and a method of recording/reproducing the data on/from the recording medium. The recording/reproducing unit block comprises invalid data used in disc certification, and an identifier to indicate that the invalid data is included in the recording/reproducing unit block, the invalid data being used during the disc certification on a portion of the recording medium or the entire recording medium. | 09-01-2011 |
20110219393 | WRITE-ONCE INFORMATION RECORDING MEDIUM, INFORMATION RECORDING METHOD, INFORMATION RECORDING APPARATUS, INFORMATION REPRODUCING METHOD, INFORMATION REPRODUCING APPARATUS AND MANUFACTURING METHOD OF THE INFORMATION RECORDING MEDIUM - In an information recording medium in which storage capacity per recording layer has increased so much that the size of an SBM varies with those of spare areas, there is mutual dependence between a DDS and an SBM and it is difficult to retrieve disc management information as intended. In an information recording medium according to the present invention, if the largest space is allocated to an user data area, the number of blocks to store a space bitmap is N | 09-08-2011 |
20110258653 | MULTILAYER OPTICAL RECORDING MEDIUM - A multilayer optical recording medium includes a plurality of interfacial surfaces that reflect an incident light beam, and neighboring ones of the interfacial surfaces has a spacer therebetween. When a light incident surface side is defined as an upper surface side, a different thickness layer unit including the spacers having different thicknesses arranged sequentially is disposed on the lowermost layer side, and the spacers each having a thickness different from the thickness of any one of the spacers arranged in the different thickness layer unit are sequentially arranged above the different thickness layer unit. | 10-20-2011 |
20110276990 | ENCODING DEVICE, ENCODING METHOD, RECORDING DEVICE, RECORDING METHOD, OPTICAL RECORDING MEDIUM, DECODING DEVICE AND DECODING METHOD - An encoding device for converting m-bit data words into n-bit (both n and m are integers and 2 | 11-10-2011 |
20120005699 | INFORMATION STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to one embodiment, an information storage medium includes an organic dye material which records information with a light beam having a wavelength equal to or smaller than 620 nm. | 01-05-2012 |
20120005700 | INFORMATION STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to one embodiment, an information storage medium includes an organic dye material which records information with a light beam having a wavelength equal to or smaller than 620 nm. | 01-05-2012 |
20120011525 | INFORMATION STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to one embodiment, an information storage medium includes an organic dye material which records information with a light beam having a wavelength equal to or smaller than 620 nm. | 01-12-2012 |
20120011526 | INFORMATION STORAGE MEDIUM, REPRODUCING METHOD, AND RECORDING METHOD - According to one embodiment, an information storage medium includes an organic dye material which records information with a light beam having a wavelength equal to or smaller than 620 nm. | 01-12-2012 |
20120017230 | OPTICAL INFORMATION RECORDING MEDIUM - A super-resolution optical information recording medium comprises a super-resolution layer and a recording layer which are laminated on a support substrate, wherein the super-resolution layer is provided with properties consisting of a first state to maintain a solid phase against irradiation of a laser beams, and a second state to become a liquid layer state against irradiation of a laser beam onto a recording mark on the recording layer to thereby change an optical constant. The optical constant is determined so that a ratio of a super-resolution signal intensity obtained at a second state region against a background light interference intensity obtained at a first state region is at least 1.8, and a ratio of the super-resolution signal intensity obtained at the second state region against a disk noise intensity obtained at first and second state regions is at least 0.16. | 01-19-2012 |
20120060175 | OPTICAL DISC - Provided is an optical disc in which at least a light reflecting layer and a light transmitting layer that includes a cured film of an ultraviolet curable composition are stacked on a substrate, and information is reproduced by making a blue laser beam be incident on the optical disc from a side of the light transmitting layer, wherein an elastic modulus (25° C.) measured by indenting a Vickers indenter having a vertex angle of 136° under a load of 100 mN into a surface of the cured film of the ultraviolet curable composition is 1,500 MPa or less; and a loss modulus (E″) at 60° C. in a dynamic viscoelastic spectrum of the cured film measured at a frequency of 3.5 Hz is | 03-08-2012 |
20120102509 | MULTILAYER OPTICAL RECORDING MEDIUM - The multilayer optical recording medium with six or more recording and reading layers disposed one above the other has at least two or more recording and reading layer groups. The recording and reading layer groups each include a plurality of recording and reading layers successively disposed one above the other. The reflectance of each of the recording and reading layers in a stacked state decreases in the order from a front side near a light incident surface toward a back side far from the light incident surface. A recording and reading layer nearest the front side among the recording and reading layers in the recording and reading layer group nearer the back side has a reflectance in a stacked state higher than that of a recording and reading layer nearest the back side among the recording and reading layers in the recording and reading layer group nearer the front side. | 04-26-2012 |
20120102510 | MULTILAYER OPTICAL RECORDING MEDIUM - Simple design of a multilayer optical recording medium is achieved while suppressing interlayer crosstalk and confocal crosstalk in the multilayer optical recording medium. Simple recording and reading control by a recording and reading unit is also achieved. The multilayer optical recording medium includes at least three or more recording and reading layers deposited one above the other with intermediate layers interposed therebetween, and information can be read by light irradiation from the layers. The intermediate layers have film thicknesses of two types or less, and all the recording and reading layers except the recording and reading layer farthest from a light incident surface have substantially the same optical constant. | 04-26-2012 |
20120102511 | MULTILAYER OPTICAL RECORDING MEDIUM - The multilayer optical recording medium with at least four or more recording and reading layers disposed one above the other has at least two or more recording and reading layer groups each including the recording and reading layers successively disposed one above the other. In adjacent recording and reading layer groups with an intermediate layer interposed therebetween, a recording and reading layer nearest a front side in the recording and reading layer group nearer a back side is higher than the higher value of the reflectances in a stacked state of two recording and reading layers nearest the back side in the recording and reading layer group nearer the front side. | 04-26-2012 |
20120124601 | OPTICAL STORAGE MEDIUM COMPRISING TRACKS WITH MODIFIED MARK DIMENSIONS, AND RESPECTIVE APPARATUS FOR READING OF DATA - The optical storage medium comprises a substrate layer and a data layer disposed on the substrate layer, the data layer having a mark/space data structure being arranged in tracks, wherein on a first track, the marks are enlarged in length and the spaces are shortened in length, and on an adjacent track, the marks are shortened in length and the spaces are enlarged in length. The track pitch between adjacent tracks is particularly below a diffraction limit of λ/2*NA of a pickup for reading of the data. | 05-17-2012 |
20120159525 | GUIDE-LAYER SEPARATED OPTICAL RECORDING MEDIUM, OPTICAL RECORDING MEDIUM DRIVE APPARATUS, AND RECORDING LAYER ACCESS METHOD - A guide-layer separated optical recording medium includes a guide layer with a guide track formed therein and a plurality of recording layers, these layers being separately deposited from each other. A layer position information region for indicating position information of each of the recording layers, is formed on the guide track within a different range of the guide layer for each of the recording layers. Each of the recording layers includes a preformat region having a predetermined signal written on a record track along the guide track, and the preformat region on each of the recording layers is provided in a region corresponding to the layer position information region. An optical recording medium drive apparatus and a recording layer access method for the guide-layer separated optical recording medium are also provided. The apparatus and method implement: determining whether a reproduced signal has been obtained, based on the detection level of a reflected beam from the preformat region by a read/write optical system; acquiring position information of one of the plurality of recording layers based on the detection level of a reflected beam from a layer position information region by a servo optical system; and causing a second laser beam to access a desired one of the plurality of recording layers in accordance with the determination result of the reproduced signal and the position information. | 06-21-2012 |
20120180079 | OPTICAL DISK AND METHOD OF MANUFACTURING THE SAME - An optical disk having a recording layer on a substrate, a bonding layer which is made of an ultraviolet cured resin bonding the recording layer, a transparent layer which is bonded to the bonding layer, and an overcoating layer which is formed on the transparent sheet and is made of the ultraviolet cured resin further has a mixed layer which is formed by mixing the ultraviolet cured resins of the bonding layer and the overcoating layer. Consequently, the bonding layer, the overcoating layer, and the mixed layer are integrally cured, so that the substrate is entirely covered with the ultraviolet cured resin having transparency, which allows a light transmitting layer A to be protected with sufficient strength. | 07-12-2012 |
20120272255 | OPTICAL RECORDING MEDIUM HAVING AUXILIARY INFORMATION AND REFERENCE CLOCK - An information recording medium is composed of a substrate having a microscopic pattern constituted by a continuous substrate of grooves formed with a groove portion and a land portion alternately, a recording layer, and a light transmitting layer. The microscopic pattern is formed with satisfying a relation of P≦λ/NA, wherein P is a pitch of the land portion or the groove portion, λ is a wavelength of reproducing light, and NA is a numerical aperture of an objective lens. The land portion is formed with wobbling so as to be parallel with each other for both sidewalls of the land portion. Auxiliary information and a reference clock is recorded alternately. Information is recorded in the recording layer corresponding to a land portion by either one change of reflectivity difference and refractive index difference in the recording layer. | 10-25-2012 |
20120324487 | OPTICAL DISC AND OPTICAL DISC DEVICE - In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method. | 12-20-2012 |
20130007781 | MULTILAYER OPTICAL RECORDING MEDIUM - An optical recording medium is provided. The optical recording medium includes a multilayer including an N (N≦5) number of interfaces capable of reflecting incident light. | 01-03-2013 |
20130019256 | INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING SAME, AND INFORMATION RECORDING MATERIALAANM Hatsuda; KoukiAACI TochigiAACO JPAAGP Hatsuda; Kouki Tochigi JPAANM Yun; KyungSungAACI TochigiAACO JPAAGP Yun; KyungSung Tochigi JP - An information recording medium excellent in long storage and capable of high-density recording, method of manufacturing the information recording medium, and information recording material are provided. Pulse laser light is focused onto a recording layer in which a thermosetting epoxy resin having a skeleton with high planarity and a curing agent are polymerized to form a recording mark. With a cured material of a recording layer having a density equal to or larger than 1.210 g/cm | 01-17-2013 |
20130055298 | INFORMATION RECORDING MEDIUM AND METHOD FOR PRODUCING SAME, AND INFORMATION RECORDING MATERIAL - An information recording medium excellent in long storage and capable of high-density recording, method of manufacturing the information recording medium, and information recording material are provided. Pulse laser light is focused onto a recording layer in which a thermosetting epoxy resin having a skeleton with high planarity and a curing agent are polymerized to form a recording mark. With a molecular weight between cross-linking points of a cured material of the recording layer being set to be equal to or smaller than 2000 and, more preferably, equal to or smaller than 500, a distance between recording marks (cavities) can be shortened. | 02-28-2013 |
20130074104 | MEDIUM HAVING SPARE AREA, AND RECORDING APPARATUS AND RECORDING METHOD OF THE MEDIUM - A medium in which information is recorded has: a guide layer of one or two layers each having a spiral track added with address information; and a plurality of recording layers in which depth positions from the guide layer differ. A user data area, spare areas, and a management information storage area for storing information about use of the spare areas are included in each of the plurality of recording layers. An inner peripheral spare area locating on an inner peripheral side of the user data area is configured so as to be used to record the information from an outer peripheral direction toward an inner peripheral direction, and an outer peripheral spare area locating on an outer peripheral side of the user data area is configured so as to be used to record the information from the inner peripheral direction toward the outer peripheral direction. | 03-21-2013 |
720719000 | Disk protection | 14 |
20080222669 | Disk protecting plate - A disk protecting plate includes a disk-shaped plate body having a central through hole. The plate body is provided on one side with a centered and low-raised annular wall, and a plurality of reinforcing ribs radially outward extended from the annular wall. Each of the reinforcing ribs has a top gradually inclined toward an outer circumferential periphery of the plate body. The disk protecting plate with the radially outward inclined reinforcing ribs may be made with reduced material to obtain a reinforced overall structural strength without forming an excessively thick outer periphery, and a plurality of disks concentrically stacked and packaged between two pieces of the disk protecting plates could therefore be effectively protected against damage caused by compression or impact against the disk protecting plate. | 09-11-2008 |
20080229350 | Disc Cleaning Device - A disc cleaner includes: a supporting body | 09-18-2008 |
20080244633 | Security Apparatus - The apparatus has an area ( | 10-02-2008 |
20090217314 | CONTENT USE CONTROL DEVICE, RECORDING DEVICE, REPRODUCTION DEVICE, RECORDING MEDIUM, AND CONTENT USE CONTROL METHOD - A collective content consisting of a plurality of partial contents holding license information including a use condition can be appropriately used according to the use condition contained in the license information in each of the partial contents. A content use control device includes an input/output I/F, license generation unit, output control unit, content reproduction unit, and use control unit. The partial content holding the license information including the use condition is inputted via the input/output I/F. License information is assigned to each of the partial contents inputted and constituting a collective content. Single license information collecting the assigned license information and its collective content are outputted to a recording medium. The content use control device reproduces a partial content contained in the collective content recorded on the recording medium and controls the use of the reproduced partial content according to its use condition. | 08-27-2009 |
20100242059 | OPTICAL DATA RECORDING DISC WITH PROTRUSION BETWEEN CLAMPING AREA AND CENTER HOLE - A disc-shaped optical data recording medium has a signal recording layer for reading and/or writing data using light, and a 10 μm to 200 μm thick transparent protective layer disposed over the signal recording layer. The optical data recording medium includes a protrusion projecting from a surface of the transparent protective layer on a light-incidence surface side to which light is emitted to the signal recording layer. The protrusion is disposed in an area between a center hole and a clamping area where the optical data recording medium is held when reading and/or writing data in the signal recording layer. | 09-23-2010 |
20100251276 | POINT-OF-SALE ENABLEMENT OF OPTICAL STORAGE MEDIA - A locking mechanism for an optical storage medium comprises a first portion that is installed on the optical storage medium and a second portion that is lockable to the first portion. When the first and second portions are locked together, the optical storage medium is unusable to access data stored thereon. | 09-30-2010 |
20110047564 | OPTICAL DISK PACKAGING STRUCTURE - An optical disk packaging structure includes primarily a cartridge and an optical disk. The cartridge is formed by adhering correspondingly a first sheet and a bottom sheet, the first sheet is formed with a first window and a surface of the first sheet is coated with a layer of separator film. The bottom sheet, on the other hand, is defined with a peel-off part. As a peel-off range of the peel-off part is sufficient for removing out the optical disk, when a user is take outing the optical disk, entire beauty of the packaging will not be spoiled. | 02-24-2011 |
20110078713 | PROTECTIVE COVER FOR DISK-SHAPED RECORDING MEDIUM - A protective cover for covering the recording surface of a disk-like recording medium so that the recording surface does not come into contact with other objects. The disk-like recording medium can be easily attached to and detached from the protective cover. The protective cover ( | 03-31-2011 |
20110202943 | OPTICAL RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCING METHOD - According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer. | 08-18-2011 |
20110202944 | OPTICAL RECORDING MEDIUM, INFORMATION RECORDING METHOD, AND INFORMATION REPRODUCING METHOD - According to one embodiment, an optical recording medium is provided in which interlayer crosstalk is low and in which stable and high-quality recording characteristics can be obtained. To this end, an optical recording medium comprises a first recording part which includes a first recording layer and a first light reflecting layer and which is disposed on a side closer to a light receiving surface, and a second recording part which includes a second recording layer and a second light reflecting layer and which is disposed on a side farther from the light receiving surface, the first recording part and the second recording part being stacked, wherein the thickness of the second light reflecting layer is larger than the thickness of the first light reflecting layer. | 08-18-2011 |
20110239240 | Sticker Media Disk - A sticker media disk may be easily stuck on an old CD, DVD, or other optical disk as a base. The combination then becomes a media disk completely playable with content in audio players, computers drives, DVD, and/or high definition (HD) disk players. | 09-29-2011 |
20110276991 | Optical disc with improved sensitivity for super-resolution pits and lands - The optical disc comprises a substrate layer, a read-only data layer having a pit/land data structure with an average pit width, arranged in tracks on the substrate layer, and a nonlinear layer with a super-resolution structure disposed on the data layer, wherein a super-resolution pit following a super-resolution land and a preceding diffractive pit is enlarged in width with regard to the average pit width, and a diffractive pit preceding a super-resolution land and a subsequent super-resolution pit is reduced in pit width with regard to the average pit width. | 11-10-2011 |
20110302595 | Workspace CD Holder - A workspace CD organizer. The organizer includes an elongated strip supporting base with a bent around the middle, and a spindle vertically perpendicularly mounted on the supporting base for holding multiple CDs. The base strip has sufficient thickness to avoid a CD from touching other surface and being scratched. | 12-08-2011 |
20130139190 | PATTERN TRANSFER MEDIUM MANUFACTURING APPARATUS, PATTERN TRANSFER MEDIUM MANUFACTURING METHOD, DISC-SHAPED PATTERN TRANSFER MEDIUM, AND PATTERN TRANSFER MEDIUM - Provided is a pattern transfer medium manufacturing apparatus including a disc injection compression molding unit that forms a disc-shaped pattern transfer medium by an injection compression molding using a disc molding die and a disc-shaped stamper and a cutting unit that performs cutting the periphery of a concave and convex pattern portion on the disc-shaped pattern transfer medium, which is formed due to a transfer by the injection compression molding, as a target object. | 05-30-2013 |
720721000 | Disk hub | 3 |
20110314484 | OPTICAL DISC WITH THICKER SUPPORTING SECTION AND THINNER RECORDING SECTION - An optical disc of a thicker supporting section and a thinner recording section is characterized by: a reinforcement section of a predetermined width which overlaps a supporting section and a recording section. With the reinforcement section, the structure of the optical disc is strengthened, and the resonant frequency of the optical disc is raised, so that the vibration of the optical disc is suppressed and the disc is suitable for high speed (16× up) reading/writing. The optical disc comprises: a circular opening disposed in the center of the optical disc; an annular recording section; an annular supporting section disposed between the annular recording section and the circular opening, wherein the annular supporting section is thicker than the annular recording section; and an annular reinforcement section which is disposed on one of the two sides of the optical disc and overlaps the annular supporting section and the annular recording section. | 12-22-2011 |
720722000 | Hub material or composition | 1 |
20120066702 | APPARATUS FOR STORING DIGITAL MEDIA THAT INCLUDES A RADIO FREQUENCY IDENTIFICATION SYSTEM - An apparatus for storing digital media utilizes an electrically conductive element, which is for reading stored digital media, and multiple electrically conductive resonant circuits as an antenna for radio frequency communications. Each of the resonant circuits is electrically isolated from the other resonant circuits and the electrically conductive element is electrically isolated from each of the resonant circuits. As a result, the apparatus for storing digital media has a relatively wide operating frequency range and a relatively long communications range, which allows worldwide usage in various applications. For example, an optically readable compact disk (CD) utilizes a metal layer configured as a reflective surface for reading stored digital media in the CD, an electrically conductive component that is not in contact with a radio frequency identification (RFID) integrated circuit (IC), and an electrically conductive component that is in contact with the RFID IC, as an antenna for the RFID IC. | 03-15-2012 |
720723000 | Including clamping plate | 1 |
20080307450 | Information Carrier, a Device for Recording and/or Reproducing Information, as Well as a Method for Manufacturing an Information Carrier - Information carrier, comprising a disc ( | 12-11-2008 |
720725000 | Disk cartridge | 26 |
20080282279 | DISC CARTRIDGE - A disc cartridge is provided. The disc cartridge in which is housed an optical disc includes a main cartridge body unit, rotatably housing an optical disc, and having an aperture for a head part for exposing a part of the optical disc to outside across the inner and outer rims of the optical disc, and a shutter unit mounted for movement to this main cartridge body unit for opening/closing the aperture for the head part. A recess into which is introduced a portion of a head part of the recording and/or reproducing apparatus is formed in continuation to the aperture for the head part in a surface of the main cartridge body unit on which slides a shutter unit in an area opposite to the area of movement of the shutter unit with the aperture for the head part in-between. | 11-13-2008 |
20100058374 | PLACEMENT OF DATA STORAGE CARTRIDGES IN SINGLE CARTRIDGE SLOTS AND IN MULTI-CARTRIDGE DEEP SLOT CELLS OF AN AUTOMATED DATA STORAGE LIBRARY - In an automated data storage library having a plurality of multi-cartridge deep slot cells, each configured to store a plurality of data storage cartridges arranged in sequential order of tiers from front to rear; having a plurality of single cartridge storage slots; and having accessor(s) configured to selectively extract, place and transport cartridges with respect to the cells; operating the accessor(s) to selectively extract, place and transport data storage cartridges with respect to the multi-cartridge deep slot cells and the storage slots, and with respect to other elements of the automated data storage library; and, if a data storage cartridge is recently used by and is to be demounted from a selected other element of the automated data storage library: first, extracting another data storage cartridge from the storage slots, vacating one of the storage slots; and second, extracting, transporting and placing the demounted data storage cartridge in the vacated storage slot. | 03-04-2010 |
20100064303 | DISK CARTRIDGE - A disk cartridge that has high durability with respect to a drop impact is provided. The disk cartridge includes: a disk-like recording medium; a cartridge case that rotatably accommodates the disk-like recording medium and is formed with a first opening that exposes a part of the disk-like recording medium; an inner rotor that is rotatably supported inside the cartridge case and includes a main surface portion formed with a second opening corresponding to the first opening; shutter members that are movable between a closing position at which the first opening is closed and an opening position at which the first opening is opened in accordance with a rotation of the inner rotor; and a buffer mechanism that is formed on the main surface portion of the inner rotor and includes rotary shafts that rotatably support the shutter members and elastic support portions that respectively support the rotary shafts and can be elastically deformed with respect to the main surface portion. | 03-11-2010 |
20110239241 | CASSETTE WITH DISK EJECT MECHANISM - An optical disk cassette has a disk eject mechanism that ejects a disk such as a DVD or CD. The disk eject mechanism has pushrod, transfer and kick out portions. The pushrod portion slides relative to a side of the cassette case. Pivotally mounted within the case, the kick out portion pushes a disk to eject it from the case. The transfer portion translates pushrod motion to motion of the kick out portion. In a preferred embodiment, the disk eject mechanism is a unitary body, with pushrod, transfer and kick out portions made homogeneously as a single entity, the pushrod portion being a resilient joining elbow. In another preferred embodiment, the disk eject mechanism has a transfer portion that is a rack and a pinion. The rack extends from the pushrod portion and the pinion is attached to or formed as part of the kick out portion. | 09-29-2011 |
20110247025 | DISK CASE AND DETERMINING METHOD THEREOF - It is an object of the invention to provide a disk case capable of easily determining a disk without changing hardware of a drive unit. A disk case of the present invention includes a case body in which a disk is held, an opening through which a portion of the disk is exposed, a shutter for opening and closing the opening, and a bridge portion located at an outer periphery of the disk and at the opening, wherein a dent having a diameter greater than an inner peripheral diameter of the bridge portion is formed at a position of a pickup moving path of the bridge portion. | 10-06-2011 |
20140143796 | DISC CARTRIDGE AND CHANGER - There is provided a cartridge including a plurality of optical information recording media having unique information recorded thereon, an accommodation body configured to accommodate the plurality of optical information recording media, and an identification device configured to store the unique information of the plurality of optical information recording media and supply the unique information to a changer in a non-contact manner, the identification device being provided in the accommodation body. | 05-22-2014 |
20140165080 | CARTRIDGE AND RECORDING AND REPRODUCING APPARATUS - There is provided a cartridge including a running portion which causes both end portions of a disc-shaped recording medium to run, and a pressing portion which presses one end portion of the disc-shaped recording medium to press the other end portion against the running portion. Static friction coefficients of a portion of the pressing portion coming in contact with the one end portion and a portion of the running portion coming in contact with the other end portion are different. | 06-12-2014 |
720728000 | Disc cartridge case or jacket | 16 |
20080263577 | Disc cartridge - The invention provides a structure of a disc cartridge which can correspond to a two-head system while keeping an advantage relating to a light shielding effect and a dust proofing effect of a double cartridge. The invention provides a disc cartridge used in a hologram information recording and reproducing apparatus independently provided with a head for detecting a tracking area and a head for recording and reproducing, in which the disc cartridge is provided with an outer cartridge, an inner cartridge accommodated in an inner side of the outer cartridge and rotatably accommodating a hologram recording medium in an inner portion thereof, and a shutter arranged between the outer cartridge and the inner cartridge and provided for opening and closing an opening portion of the disc cartridge. Further, the opening portion includes a recording and reproducing head and spindle insertion hole, and a tracking area detecting window provided independently therefrom. Further, the tracking area detecting window is provided near a center of the cartridge in the spindle insertion hole, and comes to an exposed state only at a time when the shutter is open. Preferably, the tracking area detecting window is provided at an angle between 40 to 50 degree from a center line of the recording and reproducing head and spindle insertion hole. | 10-23-2008 |
20080282280 | Disc Device - A disc device includes: a casing including: a casing body that has a housing section of a disc | 11-13-2008 |
20080282281 | CARTRIDGE ENGAGEMENT APPARATUS AND METHOD FOR CARTRIDGE LIBRARY - A cartridge library ( | 11-13-2008 |
20080282282 | Method of fabricating cartridge for miniature optical data storage disc - A cartridge for an optical data storage disc includes a monolithic shell and a sheet metal cover plate. The shell includes lateral walls and a floor that together define a cavity that holds an optical data storage disc. The cover plate is attached to the shell, with the cover plate abutting the top surfaces of the lateral walls of the shell. The optical disc is housed in the disc cavity, with the data side of the disc facing the cover plate. A sheet metal shutter is wrapped around an edge of the cartridge and is slideable between an open position, wherein a portion of the optical disc is exposed through a shutter window in the cover plate and a closed position wherein the shutter overlies the shutter window. The cartridge is very strong and is easy to fabricate. The use of sheet metal next to the data side of the optical disc allows the data on the disc to be read or recorded with a very short wavelength laser. | 11-13-2008 |
20090044215 | MEDIA DISC CARTRIDGE AND METHOD OF MANUFACTURING THE SAME - The present invention provides a disc cartridge for enclosing an optical disc rotatable therein. The disc cartridge includes an upper shell connected to a lower shell. The upper shell includes a center portion, a window portion surrounding the center portion and a frame surrounding the window portion. The upper shell is formed using a two-shot injection molding process in which a window portion is injection molded and a center opening is formed in the window portion. The center portion and the frame are formed substantially simultaneously by injection molding a common material within the center opening and around the perimeter of the window portion. | 02-12-2009 |
20090113465 | Electronic Apparatus and Optical Disk Drive - According to one embodiment, an optical disc drive includes a disc tray, a cover, an advancing/retreating mechanism, a driving unit and an optical head. The cover includes a flat plate portion, an opening portion, wall portions and an opening part. The flat plate portion is opposed to a surface of the disc tray and has a frame shape corresponding to respective side portions of the disc tray. The opening portion is provided in a central part of the flat plate portion. The wall portions erect from outer peripheral parts of the flat plate portion and surround a periphery of the disc tray excluding a front part of the disc tray. The opening part is formed in a manner to open a region opposed to another surface of the disc tray. | 04-30-2009 |
20090125933 | DISK CARTRIDGE - A disk cartridge according to the present invention includes first and second disk storage portions, each of which has a space to partially store a disk with at least one data storage side. When closed up, the first and second disk storage portions enclose the disk entirely. The disk cartridge further includes a supporting base member with a disk storage portion rotation supporting portion that supports rotatably the first and second disk storage portions so as to make or cover an opening with respect to the disk. The opening is used to get the disk chucked externally and to allow a head to access the data storage side of the disk and read and/or write data from/on that side. At least a portion of the supporting base member overlaps with the first and second disk storage portions so as to prevent the first and second disk storage portions from moving perpendicularly to the disk. | 05-14-2009 |
20090183192 | Locking structure for fixing the disk piece - A locking structure for fixing the disk piece, which comprises: a dish seat including a base portion and a plenty of flexible arms, and a pressing unit including a locking portion for locking the disk piece. Each flexible arm connects to the base portion, and protrudes outwardly from the base portion. The base portion has an adhesive face for sticking on any article or place. The pressing unit forms on the center of the dish seat, each flexible arm protrudes from the base portion and connects to the pressing unit. The locking structure of the present invention can be installed on any article or place, and fix the disk piece on the locking structure, so that the disk piece can be fixed on any place. Moreover, the locking structure of the present invention can be accessed easily and has a beautiful appearance. | 07-16-2009 |
20100050196 | Data Storage Means - Apparatus in accordance with at least one embodiment of the present invention includes a data storage cartridge and/or a receiver configured to receive the cartridge in facilitation of data transfer to and/or from the cartridge. The cartridge and the receiver each include respective connector portions configured to connect when the cartridge is inserted into the receiver. The cartridge and/or the receiver also include guide features configured to facilitate alignment of the connector portions for connection as the cartridge is inserted into the receiver. | 02-25-2010 |
20110113437 | METHOD AND SYSTEM FOR MEDIA DISC LOSS PREVENTION - An apparatus, system and method discourage theft of a media disc. The media disc has a central aperture and is retained within a media disc case by an inner spindle that extends through the central aperture. A pin is insertable through the inner spindle. A locking clutch is operable to engage the pin. When engaged, the locking clutch secures the media disc upon the inner spindle and prevents the media disc from being removed from the inner spindle. A liquid-dispensing container is positioned between the pin and the media disc such that when a force is exerted upon the media disc to attempt to remove the disc from the inner spindle when the locking clutch is engaged, the liquid-dispensing container releases a liquid which renders the media disc unreadable. | 05-12-2011 |
20110296449 | DISK CARTRIDGE - A disk cartridge includes a case body that can house a plurality of disk-shaped recording media and is joined or separated by making a first shell contact with/separate from a second shell in an axial direction, and a lock lever that is rotatably supported and locks the first shell and the second shell in a joining manner, in the inside of the case body. A disk inserting/ejecting slot is formed, a supporting shaft is provided to the case body, the lock lever includes a supported part, a lock part, and a lock-release part, the first shell is provided with an open/close panel that includes an insertion hole, an insertion protrusion part that is inserted into the insertion hole of the open/close panel is provided to an end part of the lock-release part, and an end face of the insertion protrusion part is formed as an inclined face. | 12-01-2011 |
20110296450 | DISC CARTRIDGE - A disc cartridge includes a case body in which a plurality of disc-shaped recording media can be stored being arranged in the axial direction of a central shaft and which includes a first shell having a base face portion parallel to a recording face of the recording medium and a second shell having a basal plane portion parallel to the recording face, which move toward or away from each other in the axial direction, thereby being combined with or separated from each other, wherein the second shell has a pair of side face portions protruding in the same direction from both end portions of the basal plane portion and situated facing each other, a thin-walled portion is formed at a central portion between the side face portions in the basal plane portion, and a bridge member which is attached to span the side face portions is provided. | 12-01-2011 |
720729000 | Having disc identification (e.g., write protect hole or tab) | 1 |
20140075461 | MEDIUM PROCESSING METHOD AND CASSETTE - According to one embodiment, a medium processing method includes first reading, second reading, and determining. The first reading is configured to read first medium identification information and cassette identification information which are stored in a first medium contained in a cassette. The second reading is configured to read cassette information from the cassette. The determining is configured to determine a cassette contained medium formed of the cassette and the medium as authentic, when the cassette information includes the first medium identification information and the cassette identification information. | 03-13-2014 |
720732000 | Movable cartridge case or jacket piece | 3 |
20100070986 | CD/DVD Insertable Cartridge and Player for Optical Data - Media Discs of All Sizes, Types, and Formats with Security Features - The invention consists of a combination of products including a optical data-media discs encased in a plastic cartridge or unincased in larger diameter from 5.25″ to 9″ discs with standard size and oversize versions with a sliding plastic or aluminum spring loaded doors to exclude dust, dirt, physical damage, and white color to reduce heat absorption, etc. Cartridge protective doors including spring operated side sliding and end sliding opening dust covers and fixed clear lens view window. The oversized discs provide security through non-interchangeability with standard sized discs. Also, the use of various shapes and sizes of holes through the case allow security through exclusion as does the cartridge itself. | 03-18-2010 |
20110119693 | CARTRIDGE DRIVE APPARATUS - A cartridge drive apparatus for a disc cartridge having upper and lower shells which are separatably joined to each other to form a cartridge body is disclosed, in which a accommodated disc is able to be inserted or ejected by separating the upper and lower shells vertically. The cartridge drive apparatus includes a cartridge holder which, by inserting the cartridge body, has an upper holder supporting the upper shell and a lower holder supporting the lower shell, and a holder moving mechanism which separates the upper holder and the lower holder of the cartridge holder to separate the upper shell and the lower shell and thus is able to allow the disc to be inserted or ejected. | 05-19-2011 |
720733000 | In a linear direction | 1 |
20150020085 | APPARATUS AND SYSTEM TO SECURE AND MAINTAIN INTEGRITY OF A PHYSICAL DISC - Apparatus, systems, and methods disclosed herein include apparatus, systems, and methods for securing the information contained on information discs, such as CD's, DVD's, Blu-Ray discs, or any optical media used for carrying information. The apparatus includes a security device that prevents unauthorized users from accessing the protected disc, discs, or spindle. The apparatus is such that any unauthorized attempts to unlock the locking device will result in damage to the disc, making it unreadable and/or unrenderable. The security device may be part of a system that also includes a network and a remote authentication server. Authentication data is transmitted over the network between the security device and the remote authentication server. The authentication data is then used to determine whether or not to unlock the security device. | 01-15-2015 |
720737000 | Movement prevention or static reduction (e.g., antirattle, protective sheets) | 1 |
20100251277 | System And Method For Enclosing Information Handling System Component Devices - An information handling system component contained within an information handling system housing uses the information handling system housing as at least a portion of a safety enclosure for hazardous functions of the component. A lock out device disables the hazardous function if the information handling system housing is moved relative to the component. For example, an optical disc drive laser is disabled if a Hall effect sensor in the chassis of the optical disc drive no longer senses a magnet placed in a portion of the information handling system housing used to enclose the optical disc drive. | 09-30-2010 |
720738000 | Shutter member | 2 |
720739000 | Having guide slots or projections for movement of shutter | 1 |
20090013344 | Disc Cartridge - A disc cartridge includes a cartridge main body | 01-08-2009 |
720740000 | Having shutter locking member | 1 |
20110296451 | DISK CARTRIDGE - A disk cartridge includes a case body that is capable of housing a plurality of disk-shaped recording media and is joined or separated by making a first shell contact with/separate from a second shell in an axial direction, and a lock lever that is rotatably supported and locks the first shell and the second shell in a joining manner, in the inside of the case body. A supporting shaft is provided to the case body, the lock lever includes a supported part and a lock part, a disk inserting/ejecting slot is formed, an open/close panel is provided to the first shell, the lock lever is supported on an end part of the case body, and an insertion concave part in which the lock part of the lock lever can be inserted and engaged is formed within an inner face of the open/close panel. | 12-01-2011 |
720745000 | Optical card record | 1 |
20100050197 | OPTICAL CARD - An improved optical cards includes one or more of the following features, comparatively high density material disposed at or near the periphery of the optical card to increase the rotational moment of inertia of a card without increasing the thickness of the card, comparatively high density layers added to a side opposite of the optical read side of an optical card, scratch protection disposed on the optical read surface of the optical media but not covering the tracks containing optically encoded data, or comparatively high density scratch protection disposed on the optical read surface of the optical media but not covering the tracks containing optically encoded data, and combinations of these features. | 02-25-2010 |
720746000 | Optical tape record | 4 |
20110088050 | Holographic Film and Recording Method - This invention relates to holographic film for recording multicolor volume holograms, especially full color volume reflection holograms, and to manufacturing techniques for such film, and to corresponding methods of recording multicolor and full-color volume, in particular volume reflection holograms. We describe a holographic film for recording a multicolor volume hologram, the film comprising: a carrier; a first photosensitive recording layer sensitive to one or both of red and green laser light; and a second photosensitive recording layer sensitive to blue laser light. Both the first and second photosensitive recording layers comprise silver halide and have a grain size of less than 30 nm, and at least one of the photosensitive recording layers has a thickness of greater than 3 μm and less than 5 μm. | 04-14-2011 |
20130167166 | Optical Media Having Transparent Back Side Coating - An optical media such as an optical tape includes a substrate, a pre-format layer on one side of the substrate, and a back side coating. The back side coating is optically transparent and is electrically conductive. One of the substrate and the pre-format layer is between the back side coating and the other one of the substrate and the pre-format layer. | 06-27-2013 |
20140123158 | MOLD FOR TAPE-SHAPED OPTICAL RECORDING MEDIUM, TAPE-SHAPED OPTICAL RECORDING MEDIUM, AND CUTTING DEVICE THEREFOR - There is provided a mold for a tape-shaped optical recording medium with which precise cutting can be performed along a cutting guide groove, the mold forming a recording groove in a tape-shaped optical recording medium, and having a plurality of recording and reproduction bumps that form a recording and reproduction groove, and a guide whose shape is different from that of the recording and reproduction bumps. | 05-01-2014 |
20160118077 | OPTICAL TAPE DATA STORAGE - An optical tape data storage is disclosed. An optical tape includes a substrate in a linear thin film shape and a recording layer deposited on the substrate. An irreversible optically detectable change is formed in the recording layer upon application of energy to the recording layer such that data is recorded on the recording layer by forming optically detectable changes. The recording layer may comprise a metal, a metal alloy, a metal oxide, a metalloid, or any combination thereof. The optical tape may further include an adhesion promotion layer for improving adhesion of the recording layer and the substrate, a reflective layer for providing optical contrast to an adjacent layer, and/or an absorptive layer positioned adjacent to the recording layer to absorb ablatable material not entirely ablated during ablation. | 04-28-2016 |