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| Number | Title | Issue Date |
| 8144568 | Information recording medium, information recording apparatus and method, and information reproducing apparatus and method An information recording medium (100) is provided with (i) a read only area (ROA1 and the like) whereupon read only information is previously recorded by forming embossed pits; (ii) a data area (102) wherein recording information can be recorded... | 03/27/2012 |
| 7944806 | Method for modifying optical path on optical recording medium having distortion regions Theft, distribution, and piracy of digital content on optical media (software, video, audio, e-books, any content of any kind that is digitally stored and distributed) is often accomplished by copying it directly to another disc using commonly available copy tools a... | 05/17/2011 |
| 7782746 | Optical information recording medium and method for manufacturing same An optical information recording medium that has a simple structure and with which warpage is kept to a minimum even under environmental changes over a wide range, and a method for manufacturing this medium are provided. The optical information recording medium is a... | 08/24/2010 |
| 7697407 | Multilayer optical recording medium and method for recording information in multilayer optical recording medium A multilayer optical recording medium enabled to retain an ideal signal regenerating property in spite of accidental adhesion of finger mark or alien substance is provided. The multilayer optical recording medium 1 is provided with a plurality of information-... | 04/13/2010 |
| 7684309 | Multi-purpose high-density optical disc 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 ... | 03/23/2010 |
| 7680025 | Optical information recording medium, reproducing method thereof, and manufacturing method thereof Super-resolution technology was proposed for generating marks smaller than the optical resolution in order to record data at high density on the optical disk. However, the achievable high density of the super-resolution technology was limited due to fluctuation of t... | 03/16/2010 |
| 7422838 | Phase-change optical recording medium A phase-change optical recording medium is disclosed including a supporting substrate and the following contiguous layers formed on the supporting substrate in the order recited such as a first dielectric layer, a recording layer, a second dielectric layer, a metal/... | 09/09/2008 |
| 7420908 | Optical recording medium An optical recording medium including two or more recording layers which are capable of transmitting at a high transmittance recording light or reproducing light for performing recording/reproducing of a first recording layer (3) without having to make the th... | 09/02/2008 |
| 7406005 | Optical recording medium, memory apparatus, and recording/reproduction method An optical recording medium having at least a recording film and a protection film disposed on a substrate is disclosed. The optical recording medium includes a plurality of recording tracks being disposed, along a predetermined direction, on a signal recording surf... | 07/29/2008 |
| 7394751 | Optical storage system optical storage medium and use of such a medium A description is given of an optical storage system comprising an optical storage medium (1) and an optical head device (6). The medium has a substrate (2), a recording stack (3) and an optically transparent protective coating stack (4... | 07/01/2008 |
| 7385740 | Hologram recording medium There is provided a hologram recording medium having: a recording layer at which a hologram can be recorded by illumination of writing light; and a protective layer provided on the recording layer in order to protect the recording layer, a water absorbency of the pr... | 06/10/2008 |
| 7384723 | Optical information recording medium An optical information recording medium including a substrate having successively disposed thereon a recording layer, an interlayer, a pressure sensitive adhesive layer and a cover film in which information is recordable and reproducible by irradiating laser light a... | 06/10/2008 |
| 7376073 | Optical storage medium having distortion regions, and a method of modifying an optical storage medium to include distortion regions Theft, distribution, and piracy of digital content on optical media (software, video, audio, e-books, any content of any kind that is digitally stored and distributed) is often accomplished by copying it directly to another disc using commonly available copy tools a... | 05/20/2008 |
| 7372801 | Reproduction-only optical disc and method of recording and/or reproducing data on and/or from the same A reproduction-only optical disc has a lead-in area, a user data area, and a lead-out area. Disc related information recorded on at least one of the lead-in area and the lead-out area is recorded by high frequency groove wobbles, and data of the user data area is re... | 05/13/2008 |
| 7368223 | Multi-stack optical data storage medium and use of such a medium A multi-stack optical data storage medium for rewritable recording by a focused laser-light beam, the medium having a substrate with deposited on aside thereof: a first recording stack comprising a phase-change type recording layer... | 05/06/2008 |
| 7370367 | Security device and article incorporating same A compact disc (10) for a computer incorporates a security device for preventing non-authorized reading of data carried by the disc. The security device includes an LCD laser blocker (16) which is activated or deactivated by means of a microchip (13... | 05/06/2008 |
| 7368222 | Optical data storage media with enhanced contrast Disclosed is an optical data storage medium with enhanced contrast. The optical data storage medium includes a substrate having oppositely facing first and second surfaces. A first metal/alloy layer is formed overlaying the first surface of the substrate. The first ... | 05/06/2008 |
| 7366081 | Information recording medium An information recording medium according to the present invention includes a recording layer that is formed of a single layer of a single type of recording material and is directly sandwiched by a pair of resin layers, the information recording medium being constru... | 04/29/2008 |
| 7362862 | Methods and apparatus for awarding prizes based on authentication of computer generated outcomes using coupons The present invention provides authentication of computer generated game or test results (“outcomes”), and a system by which persons who play games or take tests on a game or testing computer, respectively, may submit the outcomes of the games or tests to a cent... | 04/22/2008 |
| 7352680 | Optical recording medium having relation between reflection layer and pit length An optical information recording medium including a substrate, a light absorbing layer which is located overlying the substrate and in which marks are formed to store information and a light reflection layer located overlying the light absorbing layer including a cr... | 04/01/2008 |
| 7349324 | Reproducing system and corresponding information recording medium having wobbled land portions An information recording medium is at least 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 formed on the microscopic pattern for rec... | 03/25/2008 |
| 7341820 | Optical information recording medium The present invention is an optical information recording medium comprising a substrate having disposed in an order thereon a recording layer, an interlayer, and a cover layer, wherein recording and reproduction are carried out by the irradiation with a laser light ... | 03/11/2008 |
| 7335459 | Phase-change optical recording medium A phase-change optical recording medium includes a phase-change optical recording film that permits reversible phase change between a crystalline phase and an amorphous phase upon irradiation with light, and an interface film formed of hafnium oxide, or a mixture of... | 02/26/2008 |
| 7314658 | Storage medium for data This disclosure relates to a data storage medium, and in particular to a data storage medium comprising at least one high modulus layer. In one embodiment, an asymmetric optical storage medium can comprise: a substrate layer comprising polyarylene ether, a high modu... | 01/01/2008 |
| 7313084 | Information recording medium In an information recording medium comprising at least a substrate, a recording layer, and a resin layer, the substrate is formed with at least a pit corresponding to a read only area 31 and a groove corresponding to a recording/reproducing area 32 wit... | 12/25/2007 |
| 7304937 | Identification of program information on a recording medium A system and method of identifying programs contained on a disk of any format, including, for example, either a single-sided or a double-sided disk with either a single-layer or multi-layer tracks, are presented. In particular, a dual-sided recording medium is discl... | 12/04/2007 |
| 7300690 | Radial tilt reduced media A storage media having a radial deviation of less than or equal to about 1.15 degrees at a radius of 55 mm is disclosed. In one embodiment, the storage media comprises: a plastic substrate, an optical layer and a data storage layer disposed therebetween. A reflectiv... | 11/27/2007 |
| 7301862 | Optical disc drive having tilt controlled objective lens and optical disc An optical disc drive includes an objective lens for focusing light on an optical disc with five or more stacked data storage layers and a tilt control mechanism for controlling a tilt angle defined between the optical axis of the light and a normal to the storage l... | 11/27/2007 |
| 7295508 | Optical disk The present invention provides an optical disc which is constituted by a substrate, a recording layer, and a protection layer and is irradiated with a laser beam from the protection layer side. The optical disc has the substrate whose diameter is greater than 50 mm,... | 11/13/2007 |
| 7294446 | Digital analog recording using near field optical imaging A data storage device and method of making the storage device wherein a digital and analog image may be stored thereon. The storage device includes a photosensitive layer capable of retaining an optical image thereon, which may be written in a digital format that ca... | 11/13/2007 |
| 7294281 | Optical information recording medium, original disc for optical information recording medium, and method of manufacturing the same An optical information recording medium, which includes both of a land surface and a groove surface as a recording track and presents high signal quality. The optical information recording medium includes both a land and a groove as the recording track on a substrat... | 11/13/2007 |
| 7290272 | 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 pr... | 10/30/2007 |
| 7288305 | Process for manufacturing a recordable optical disk, optical disk and rewritable layer obtained by the process A process for manufacturing a recordable optical disk including forming a back rewritable layer and depositing a transparent intercalary layer on the back rewritable layer, and forming a front rewritable layer including a metallic alloy and a cermet dielectric such ... | 10/30/2007 |
| 7275040 | RFID security device for optical disc An optical disc has a security feature in the form of an RFID tag that communicates with a voltage controlled optical modifier layer in the optical disc. In the presence of an interrogation signal, the RFID tag allows the optical disc to be used normally by outputti... | 09/25/2007 |
| 7272107 | Optical recording medium having super resolution layer A tool attachable to a spindle of a machine tool in the same way as an ordinary tool, capable of being driven without connecting with an external power supply etc., giving a higher rotational speed than that of the spindle of the machine tool without supplying elect... | 09/18/2007 |
| 7251089 | Storage medium with overcoat layer for enhanced heating A data storage system includes a magnetic storage medium and a write head configured to be positioned adjacent the storage medium and. The write head includes a magnetic field source configured to apply a magnetic field to the storage medium and an optical near fiel... | 07/31/2007 |
| 7245580 | Optical recording medium having protective and/or adhesive layers, and method of manufacture An optical recording medium including a substrate having guide groove thereon; a first protective layer located overlying the substrate; a recording layer located overlying the first protective layer; a second protective layer located overlying the recording layer; ... | 07/17/2007 |
| 7246246 | System for keying protected electronic data to particular media to prevent unauthorized copying using a compound key A system an method for distribution of electronic data over a network infrastructure that includes a client device for operation by a user desiring to receive the electronic data and server that contains the electronic data and offering the electronic data for downl... | 07/17/2007 |
| 7241555 | Optical information recording medium and method for recording information The present invention provides an optical information recording medium including a substrate; and a recording layer provided onto the substrate, to which information can be recorded and from which the information can be replayed by irradiating the medium with a lase... | 07/10/2007 |
| 7241549 | Information recording medium An optical recording medium configured with a light reflection layer; a first protection layer; a recording layer containing a phase-change material which changes between crystalline and amorphous phases by a light irradiation; a second protection layer; and one of ... | 07/10/2007 |
