Patent application number | Description | Published |
20090010115 | OPTICAL-DISK RECORDING MEDIUM, PLAYING APPARATUS AND METHOD FOR SAME, AND RECORDING APPARATUS AND METHOD FOR SAME - In an optical disk, a substrate has main data recorded in the form of a combination of pits and lands on one side thereof, and at least a reflective layer and cover layer are stacked on the substrate to cover the pits and lands on the substrate. To the optical disk, sub data is recorded in the form of marks formed by irradiating writing-power laser light to the reflective layer. The marks are formed so that reading signal level will be raised where the marks are formed while it will be lowered where the marks are formed in a counterfeit disk produced based on an authenticated disk, namely, the reading signal level where the marks are formed is different in polarity between in the authenticated and counterfeit disks. Further, in a player for the optical disk, discrimination is made between the authenticated and counterfeit disks by detecting the sub data recorded in the optical disk and judging whether the value of the detected sub data has been read at a correct polarity. | 01-08-2009 |
20090012331 | Process for the production of vinyl compound - A process, advantageous in producibility, for the production of a vinyl compound containing very small amounts of ionic impurities and hydrolysable halogens, which is capable of curing by means of heat and/or light and giving a cured product having excellent dielectric characteristics and heat resistance, which process can efficiently remove a generated salt and comprises reacting a non-protonic polar solvent solution of a specific bifunctional phenylene ether oligomer with a vinylbenzyl halide in the presence of an alkoxide of an alkali metal,
| 01-08-2009 |
20090022044 | OPTICAL INFORMATION RECORDING MEDIUM AND METHOD OF MARKING BCA (BURST CUTTING AREA) INTO THE SAME - An optical information recording medium includes a read-only information recording portion, and a BCA (Burst Cutting Area) portion formed by laser marking. A reflective film on an information recording surface of the read-only information recording portion and a reflective film on the BCA portion are formed of the same material. The reflective film includes Ag as a main component, and at least one of Nd and Gd, and at least one of Sn and In as components; the reflective film including at least one of Nd and Gd of 0.1 atom % or more and 3.0 atom % or less in total and at least one of Sn and In of 3 atom % or more and 12 atom % or less in total. Recorded information is reproduced from the information recording surface of the read-only information recording portion and a BCA signal is reproduced from the BCA portion, using blue-violet laser reproducing light. | 01-22-2009 |
20090073845 | OPTICAL 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 |
20090080312 | READ-ONLY OPTICAL DISC MEDIUM AND METHOD OF MANUFACTURING SAME - At the stage where disc substrates are to be manufactured in mass production by using a stamper, a section where pits/lands are not formed is formed in advance as an additional information recording section among recording tracks formed by a recording data sequence of pits/lands. A metal alloy reflection film is coated on the information recording surface including such an additional information recording section | 03-26-2009 |
20090117267 | OPTICAL RECORDING MEDIUM AND METHOD OF PRODUCING THE SAME - An optical recording medium wherein characters can be easily recognized on an optical disk irradiated with a light through a light transmitting layer and a method of producing the same are provided. In an optical disk of a type that an optical recording layer is irradiated with a light through a light transmitting protective layer, dealing with a larger capacity, wherein one main surface of a medium substrate | 05-07-2009 |
20090147664 | OPTICAL DISK READ ONLY MEMORY - An optical disk read only memory having an information recording surface with a concave-convex pattern formed on the basis of a first signal and a reflective film covering the surface. The disc medium includes: an additional information recording section formed on a recording track of a first data string; and a second data string including a mark of removing or reducing the reflective film. The modulation methods of the first and the second data strings are identical, and Lh(n)>Lp | 06-11-2009 |
20090236308 | OPTICAL RECORDING AND REPRODUCING MEDIUM SUBSTRATE, MANUFACTURING METHOD OF OPTICAL RECORDING AND REPRODUCING MEDIUM MANUFACTURING STAMPER AND OPTICAL RECORDING AND REPRODUCING MEDIUM MANUFACTURING STAMPER - In an optical recording and reproducing medium having a groove | 09-24-2009 |
20090252914 | OPTICAL RECORDING MEDIUM HAVING WRITE ONCE METAL REFLECTIVE FILM - A pirated optical recording medium may be determined which is produced by physically transferring a shape of pits and lands formed on a substrate of an optical recording medium. The optical recording medium is provided with excellent weatherability and long-term storage reliability. A reflective film formed of an Ag alloy film of Ag | 10-08-2009 |
20090262640 | OPTICAL DISC MANUFACTURING METHOD, DISC MASTER MANUFACTURING METHOD, AND OPTICAL DISC - An optical-disc manufacturing method including the steps of: fabricating a pre-exposure disc master by forming, on a substrate, a heat accumulation layer having a thickness of 17% or less of a recording-laser wavelength and forming an inorganic resist layer; performing exposure of a recording-signal pattern having pits and spaces with respect to the inorganic resist layer of the disc master, by performing recording-laser light irradiation; fabricating a disc master having a pit-array shape having pits and spaces, by performing development processing after the exposure; manufacturing a stamper to which the pit-array shape is transferred, by using the disc master having the pit-array shape; and manufacturing an optical disc having a predetermined layer structure including a recording layer to which the pit-array shape of the stamper is transferred and in which a silver or silver-alloy reflective film is formed on the pit-array shape. | 10-22-2009 |
20100028590 | OPTICAL DISC RECORDING MEDIUM AND METHOD OF MANUFACTURING OPTICAL DISC - An optical disc recording medium includes a disc substrate, at least one recording layer which is disposed on one surface side of the disc substrate, a cover layer which is disposed on a laser incident surface side of the recording layer and which is composed of a light-transmissive resin layer, and a hard coat layer which is disposed for surface protection on a laser incident surface side of the cover layer and which is composed of a light-transmissive resin layer. The cover layer is formed such that its thickness decreases from the central portion to the peripheral portion of the disc, the hard coat layer is formed such that its thickness increases from the central portion to the peripheral portion, and the total thickness of the cover layer and the hard coat layer is substantially uniform from the central portion to the peripheral portion. | 02-04-2010 |
20100074094 | OPTICAL INFORMATION RECORDING MEDIUM, METHOD FOR MANUFACTURING OPTICAL INFORMATION RECORDING MEDIUM, AND BCA (BURST CUTTING AREA) MARKING METHOD - The invention provides an optical information recording medium which is compatible with Blu-ray for recording a BCA signal by laser marking, in which the optical information recording medium has superior reading properties and is improved in recording properties and reliability in a BCA portion. A reflective film | 03-25-2010 |
20100085864 | METHOD FOR MANUFACTURING READ-ONLY OPTICAL DISC MEDIUM AND READ-ONLY OPTICAL DISC MEDIUM - An information signal area on an information signal recording surface is provided as pits on a mirror in accordance with modulated information data, and is covered with a metal alloy reflective film. Sections that do not include pits corresponding to the information data are provided in the information signal area, and portions of the metal alloy reflective film on the sections are formed as perforated marks corresponding to the information data. In this case, the reproduction signal amplification level of a prepit signal and the reproduction signal amplitude level of a perforated mark signal can be obtained as substantially equal values by adjusting the depth and width of pits and/or adjusting the width and length of perforated marks. Hence, waveform distortion due to a waveform equalization circuit and variations in binary signals due to displacement of the slice level are reduced so that signals can be stably and reliably detected with the same reading apparatus. | 04-08-2010 |
20100143637 | Optical recording medium, and method for producing optical recording medium - An object of the invention is to provide an optical recording medium and a method for producing an optical recording medium that enable to improve the quality of a servo signal and a reproduction signal. The optical recording medium satisfies: t | 06-10-2010 |
20100330303 | METHOD OF PRODUCING OPTICAL DISC RECORDING MEDIUM - Provided is a method of producing an optical disc recording medium with which an inexpensive optical disc recording medium can be produced. | 12-30-2010 |
20110076436 | OPTICAL RECORDING MEDIUM AND METHOD FOR MANUFACTURING THE SAME - An optical recording medium having three or more information recording layers reduces crosstalk caused by multi-reflected beams and improves signal quality. In the optical recording medium having three or more information recording layers, the refractive index of a plurality of intermediate layers disposed between adjacent information recording layers is greater than the refractive index of a cover layer disposed between a light incident surface and an information recording layer being the closest from the light incident surface. | 03-31-2011 |
20110208637 | POWER TRADE SERVER, GREEN MARKET MANAGEMENT SERVER, TRADING MANAGEMENT METHOD, AND GREEN TRADING MANAGEMENT METHOD - There is provided a power trade server comprising a first certificate acquisition unit obtaining a first certificate certifying a storage amount of a first device for charging electricity a first user owns, from the first user eager to buy electricity, a second certificate acquisition unit obtaining a second certificate certifying a space amount of a second device for charging electricity a second user owns, from the second user eager to sell electricity, a power selling limitation unit limiting an electricity amount the first user can sell up to the storage amount of the first device for charging electricity based on the first certificate obtained by the first certificate acquisition unit, and a power purchase limitation unit limiting an electricity amount the second user can sell up to the space amount of the second device for charging electricity based on the second certificate obtained by the second certificate acquisition unit. | 08-25-2011 |
20120113789 | READ-ONLY OPTICAL RECORDING MEDIUM - [Object] To provide a durable read-only optical recording medium having less variances in characteristics of a metal reflective film due to a temporal change. | 05-10-2012 |
20130007458 | GREEN ENERGY GENERATION APPARATUS, MOBILE DEVICE, ELECTRIC STORAGE APPARATUS, AND MANAGEMENT METHOD OF GREEN ENERGY INFORMATION - A method is provided for authenticating characteristics of electrical energy. The method comprises acquiring a key, acquiring an amount of electrical energy, and generating a digital signature based on the amount and the key. The method further comprises generating a certificate comprising the signature and the amount. | 01-03-2013 |
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 |
20140119170 | OPTICAL RECORDING MEDIUM - The present technology relates to an optical recording medium for realizing an optical recording medium capable of high-capacity recording. A groove and a land are formed, the groove being concave and the land being convex when seen from a side of a laser light incident surface, both of the groove and the land being recording tracks where recording or reproduction of information is performed. According to this recording layer, a pitch between the groove and the land that are adjacent recording tracks is within a range of 250 nm to 200 nm. Moreover, recording or reproduction of information is performed with respect to the recording tracks by irradiation of laser light whose wavelength is 400 nm to 415 nm by an optical system whose NA is 0.85±0.1. | 05-01-2014 |