Patent application number | Description | Published |
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 |
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 |
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 |
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 |
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 |
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 |
20110310723 | OPTICAL INFORMATION RECORDING METHOD, OPTICAL INFORMATION REPRODUCING METHOD, OPTICAL INFORMATION RECORDING APPARATUS, AND OPTICAL INFORMATION RECORDING AND REPRODUCING APPARATUS - An optical information recording method includes emitting light having a wavelength λ1 from a first light source with a pulse width of time tw1 or more and power P1, emitting light having a wavelength λ2 from a second light source with a pulse width of time tw2, a repetition interval T, and power P2, and performing information recording by simultaneously irradiating an identical part of a recording medium with the light from the first light source and the light from the second light source, in which the wavelength λ1 and the wavelength λ2 satisfy λ1>500 nm>λ2 and λ0 which is expressed as 1/λ1+1/λ2=1/λ0 satisfies a relationship of λ0<300 nm, and emission of the first light source and emission of the second light source satisfy relationships of tw2P1. | 12-22-2011 |
20120008484 | OPTICAL INFORMATION RECORDING REPRODUCTION APPARATUS AND OPTICAL INFORMATION RECORDING REPRODUCTION METHOD - An optical information recording reproduction apparatus includes: a first light beam source; a second light beam source emitting a beam with a wavelength shorter than that of the first light beam source; and an object lens condensing the beams from the first and second light beam sources to an optical information recording medium. When information is recorded in the optical information recording medium, a recording beam is emitted from the first light beam source and a beam used to generate a signal for controlling a position of the object lens is emitted from the second light beam source. When the information of the optical information recording medium is reproduced, a reproduction beam is emitted from the second light beam source. | 01-12-2012 |
20120092977 | OPTICAL RECORDING MEDIUM, METHOD OF PRODUCING SAME, AND RECORDING DEVICE - An optical recording medium includes a recording layer in which recording of a mark is selectively performed in a depth direction by irradiation of first light, and the mark is formed in multilayer form; and a reflection film reflecting second light of a wavelength different from a wavelength of the first light, and provided on a lower layer side of the recording layer. | 04-19-2012 |
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 |
20120196077 | OPTICAL RECORDING MEDIUM AND PRODUCTION METHOD FOR OPTICAL RECORDING MEDIUM - [Object] To enable stable void recording to be performed with lower power than in a case where a conventional void (hole) recording method is adopted. | 08-02-2012 |
20120281513 | RECORDING APPARATUS, RECORDING METHOD, AND OPTICAL RECORDING MEDIUM - [Object] To enable stable void recording to be performed with lower power than in a case where a conventional void recording method that records hole marks (voids) in a bulk layer is adopted. | 11-08-2012 |
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 |
20140037921 | OPTICAL INFORMATION RECORDING MEDIUM AND LAMINATE FOR OPTICAL INFORMATION RECORDING MEDIUM - An optical information recording medium includes multiple laminated resin layers. At least one of interfaces between the resin layers has a refractive index which gradually changes in a thickness direction of the resin layers. | 02-06-2014 |
20140050877 | OPTICAL INFORMATION RECORDING MEDIUM AND OPTICAL INFORMATION RECORDING MEDIUM LAMINATE - There is provided an optical information recording medium including a plurality of laminated resin layers, and an inorganic layer that is formed in an interface between the resin layers. Storage elastic moduli are different when the interface is assumed to be a boundary. An information signal is recorded in the interface. | 02-20-2014 |
20150051903 | INFORMATION PROCESSING DEVICE, STORAGE MEDIUM, AND METHOD - There is provided an information processing device including an input unit to which words are input, an analysis unit configured to analyze meanings of the respective words, an image generation unit configured to generate single images corresponding to the respective words, and a display control unit configured to control the images generated by the image generation unit to be displayed on a display unit. | 02-19-2015 |