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| Number | Title | Issue Date |
| 8068387 | Magneto-optical device A magneto-optical device is disclosed that includes a non-magnetic support body and a fine particle arrangement layer on the non-magnetic support body. The fine particle arrangement layer includes multiple regularly arranged fine metal magnetic particles. In the mag... | 11/29/2011 |
| RE42824 | Magneto-optical recording medium having a plurality of ferromagnetic thin layers A magneto-optical device including a substrate which is transparent to light in a visible spectrum region and, a plurality of ferromagnetic layers arranged thereon, each ferromagnetic layer preferably having a width ranging from in an inclusive range of 5 to through... | 10/11/2011 |
| 7974158 | Optical disk and optical recording/reproducing device A small-sized, large-capacity optical disk is provided which is superior in portability. The optical disk has a diameter less than 64 mm and a thickness less than 0.8 mm. Tracks are formed with a pitch less than 0.6 μm, and the record area is divided into a plurali... | 07/05/2011 |
| 7916581 | Optically-readable disk with copy protection device An optically-readable disk includes a device that disrupts readability of the disk when the disk is spun at an angular velocity substantially greater than required to play the disk in its intended playing device, or when a defined integral of velocity and time is ex... | 03/29/2011 |
| 7804744 | Optically-readable disk with copy protection device An optically-readable disk includes a device that disrupts readability of the disk when the disk is spun at an angular velocity substantially greater than required to play the disk in its intended playing device, or when a defined integral of velocity and time is ex... | 09/28/2010 |
| 7420888 | Optical recording medium and optical recording/reproducing method An optical recording medium 10 on which recording/reproducing or reproducing is performed by irradiating a light by means of an objective lens 4 having a numerical aperture equal to or more than 1 wherein an optical recording portion 2 is provid... | 09/02/2008 |
| 7414924 | Magneto-optical recording medium having watermark for preventing unauthorized copy An optical disk that includes main information and write-once information recorded on the optical disk. The write-once information is recorded as information unique to the optical disk, and the write-once information stores at least watermark production parameters f... | 08/19/2008 |
| 7313056 | Magneto-optical recording medium and magneto-optical recording device The magneto-optical recording medium is comprised of a phase pit substrate/dielectric layer/recording layers/dielectric layer/reflection layer and a ROM and RAM can be simultaneously regenerated. The shape of the phase pit is constructed to be 5 | 12/25/2007 |
| 7299535 | Methods for making data storage media and the resultant media Methods for forming data storage media and the media formed thereby are disclosed herein. In one embodiment, the method for forming a data storage media, comprises: injection molding a substrate comprising surface features, wherein said surface features have greater... | 11/27/2007 |
| 7301855 | Apparatus and method for storing ROM and RAM data into magneto-optical recording medium An optical disk apparatus records new information related to the ROM information into RAM at a position linked with the ROM information of an optical information storage medium while continuously regenerating the ROM information of the optical information storage me... | 11/27/2007 |
| 7280276 | Objective lens An objective lens on which a beam having parallel light fluxes is incident includes a single element lens and a reflection suppressing coating formed on at least one surface of the single element lens. The reflection suppressing coating is formed such that the refle... | 10/09/2007 |
| 7277619 | Nano-imprinted photonic crystal waveguide This invention relates to a method for forming a nano-imprinted photonic crystal waveguide, comprising the steps of: preparing an optical film on a substrate; preparing a template having a plurality of protrusions of less than 500 nm in length such that the protrusi... | 10/02/2007 |
| 7274626 | Magneto-optical recording using a heating element A perpendicular magnetic recording medium for thermo-magnetic printing has an ultra-high recording density and is resistant to thermal decay of magnetization. An intermediate layer of the medium is provided between a first recording layer using a low-noise Co alloy ... | 09/25/2007 |
| 7251202 | Substrate for optical recording medium, optical recording medium, master disc, master disc recording apparatus, and signal generating apparatus A substrate for an optical recording medium includes recording tracks formed in guide grooves on a disc and an address section having an address pit sequence formed between the recording tracks in the guide grooves along an information reading direction of the recor... | 07/31/2007 |
| 7212489 | Optical disc and method of protecting same An optical disc for storage and retrieval of digital data, and a system and method for protecting the optical disc is disclosed. The optical disc has projections or embossments on one or both surfaces. When the optical disc is placed on a substantially flat surface ... | 05/01/2007 |
| 7209429 | Data recording device comprising micro-tips and a recording medium The invention relates to a data recording device comprising microtips and a recording medium. The recording medium comprises a substrate with a preferably-carbon resistive layer disposed thereon, said resistive layer being covered with an active layer. According to ... | 04/24/2007 |
| 7209312 | Self-servo-write using ramp-tracks Systems and techniques relating to writing servo information on a machine-readable medium. A technique includes forming servo information using a band of ramp-tracks generated based on a mechanical characteristic of a storage device. This can involve writing the ban... | 04/24/2007 |
| 7196975 | Magneto-optical disk with protective layer, and optical disk device On a pit information surface (22d) of a read-only optical disk (22), a protective layer (22f) suited for a floating-type or a sliding-type magnetic head (3) used for a magnetic field modulation type magneto-optical disk is f... | 03/27/2007 |
| 7185814 | Layer structure and method of manufacture for optical memory strip (OMS) This invention discloses an optical memory strip and a data card that has at least an optical memory strip as a cutoff piece bonding and attaching to the data card for storing data accessible with an optical read/write head. The data card can further includes at lea... | 03/06/2007 |
| 7179551 | Poly(arylene ether) data storage media A storage media comprises: a substrate comprising a plastic resin portion, wherein to plastic resin portion comprises poly(arylene ether) and a styrene material selected from the group consisting of polystyrene, styrenic copolymer(s), and reaction products and combi... | 02/20/2007 |
| 7177254 | Optical recording method for high transfer rates An optical recording method that performs recording by irradiating optical recording media with laser beam modulated in intensity based on a write waveform is provided. The write waveform has a plurality of write pulse blocks for forming write marks, and each write ... | 02/13/2007 |
| 7174414 | Method and apparatus mapping logical tracks in a disk drive for optimizing track seek time A method of mapping logical track numbers to a collection of physical tracks on at least two disk surfaces within a disk drive. The method further includes accessing logical tracks at assigned physical tracks. The invention includes making disk drives using the mapp... | 02/06/2007 |
| 7166320 | Post-deposition annealed recording media and method of manufacturing the same A novel technique for incorporating rapid thermal annealing into media sputter fabrication has facilitated the production of flyable media samples. Discs are fabricated with standard processing techniques to control physical grain size and crystallite texture. A CrM... | 01/23/2007 |
| 7155732 | Heat assisted magnetic recording head and method A magnetic recording head comprises a write pole having a pole tip adjacent to an air bearing surface, a return pole, a near field transducer positioned adjacent to the air bearing surface for producing near field radiation for heating a portion of a magnetic storag... | 12/26/2006 |
| 7116623 | Optical information recording method, optical information recording device and optical information recording medium An optical information recording device includes a linear velocity setting circuit for setting a first linear velocity v1 and a second linear velocity v2 higher than the first linear velocity v1 for a optical information recording medium, a reco... | 10/03/2006 |
| 7113474 | Increased data storage in optical data storage and retrieval systems using blue lasers and/or plasmon lenses An optical recording medium includes a crystallizing layer for enhancing the crystallization of a phase change memory layer, an energy storage layer for aiding the state transformations of a phase change memory layer, and/or a modifying element for increasing absorp... | 09/26/2006 |
| 7110346 | Devices for optical near-files second surface recording Techniques and devices based on near-field second surface recording. ... | 09/19/2006 |
| 7103896 | Mechanism to aid optical beam focusing on optical disc An optical disc of one embodiment of the invention is disclosed that includes a first surface, a second surface, an optically writable label area, and an optically writable data area. The first and the second surfaces are oppositely situated to one another. The labe... | 09/05/2006 |
| 7102990 | Optical information-recording medium and optical information recording/reproducing method An optical information-recording medium comprises (a) a disk-shaped substrate having a first main surface and a second main surface opposite to the first main surface; an incidence surface of the medium being located to be nearer to the first main surface than the s... | 09/05/2006 |
| 7096479 | Optical information recording medium An optical information recording medium 10 is composed of at least a reflective layer 2, a first protective layer 3, a phase-change type optical recording layer 4 and a second protective layer 5 being sequentially laminated on a su... | 08/22/2006 |
| 7090933 | Magneto-optical recording medium including a soft magnetic layer, a protective layer and a silane coupling agent layer, in this order The invention is a magneto-optical recording medium characterized by containing at least a soft magnetic layer, a protective layer, a resin layer having a servo pattern formed thereon, a reflecting film, a lower dielectric material film, a recording film, an upper d... | 08/15/2006 |
| 7079479 | Optical storage medium having an organic recording layer attached to a dielectric layer A dielectric part 4 comprising a nitride layer 7 and an oxide layer 8, laid one upon the other, is formed on a data-recording layer 3. A light-transmitting layer 5 is boned with adhesive to the dielectric part 4. Since the d... | 07/18/2006 |
| 7050366 | Device and method for detecting non-writable region of optical recording medium Device and method for detecting a non-writable region of an optical recording medium, wherein a read channel 1 signal and a read channel 2 signal are sliced at respective slice levels to produce header mask signals, and a header region which is a non-w... | 05/23/2006 |
| 7050385 | Optical recording medium An optical recording medium comprising at least a land and a groove where information-recording/reproducing is carried out by a flying type optical head, The optical recording medium keeps the flying height of the flying optical head constant in the entire region of... | 05/23/2006 |
| 7042669 | Method and apparatus for recording/reproducing magnetization information An information storage device having a hard disk has a metal probe that is brought closely to the surface of a multilayer film that includes a magnetic metal layer, a non-magnetic metal layer, and a magnetic metal layer up to a nano-meter order distance from the sur... | 05/09/2006 |
| 7002893 | Optical head with passive temperature compensation An optical pickup apparatus includes a light source and a light detector provided on a stem for detecting source emitted light reflected by an optical recording medium; and a light separating device, having first and second areas, for separating light incident there... | 02/21/2006 |
| 6996052 | Optical information recording medium and optical recording method An optical information recording medium for recording information by a plurality of record mark lengths, wherein the shortest mark length is at most 0.5 μm, and a crystal state is an unrecorded or erased state and an amorphous state is a recorded state, wherein the... | 02/07/2006 |
| 6985373 | Binary beam steering device An element for steering electromagnetic beams. The element includes a phase change material in combination with dielectric and other layers in a multilayer optical stack. The phase change material that is reversibly transformable between two or more structural state... | 01/10/2006 |
| 6977477 | Systems, apparatus, and methods for motor control Systems and methods are provided through which the current to a spindle motor of the recording medium of a mass storage device is modulated to avoid anomalies in the operation of mass storage device and reduce power consumption. In the example of a disc drive, the c... | 12/20/2005 |
| 6975564 | Magneto-optical recording medium for use in domain wall displacement detection system, and method for producing the same An optical disk of the present invention includes a substrate and a recording layer disposed above the substrate, and reproduces an information signal by a DWDD system, using light incident from the substrate side. The optical disk further includes a first dielectri... | 12/13/2005 |
