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    • 42. 发明授权
    • Method for determining recording laser power for super-resolution optical recording medium and apparatus for recording information on super-resolution optical recording medium
    • 用于确定超分辨率光学记录介质的记录激光功率的方法和用于在超分辨率光学记录介质上记录信息的装置
    • US07646687B2
    • 2010-01-12
    • US11783218
    • 2007-04-06
    • Tatsuhiro KobayashiTakashi KikukawaNarutoshi Fukuzawa
    • Tatsuhiro KobayashiTakashi KikukawaNarutoshi Fukuzawa
    • G11B7/125
    • G11B7/1267
    • A method for determining recording laser power on a super-resolution optical recording medium, on which information is recorded on a super-resolution optical recording medium by irradiating a laser beam modulated into a recording pulse train according to recording data to thereby form a recording mark train including recording marks and spaces smaller than the resolution limit of a reproduction optical system and recording marks and spaces equal to or larger than the resolution limit, is provided. At the time of recording, the method determines a minimum value and a maximum value of recordable laser powers determined by test-writing before recording, and determines a maximum value of a recordable range of laser power by adding to the minimum value one-third of a difference between the maximum value of the recordable laser powers and the minimum value. The method determines an optimal range of recording laser power from the minimum value of recordable laser powers to the maximum value of the recordable range.
    • 一种用于在超分辨率光学记录介质上确定记录激光功率的方法,通过根据记录数据照射调制到记录脉冲串中的激光束将信息记录在超分辨率光学记录介质上,从而形成记录标记 提供包括小于再现光学系统的分辨率限制的记录标记和空间的记录,以及等于或大于分辨率极限的记录标记和空格。 在记录时,该方法确定在记录之前通过测试写入确定的可记录激光功率的最小值和最大值,并且通过将最大值加到三分之一的最小值中来确定激光功率的可记录范围的最大值 可记录激光功率的最大值与最小值之间的差。 该方法从可记录激光功率的最小值到可记录范围的最大值确定记录激光功率的最佳范围。
    • 43. 发明授权
    • Information readout method for non mask layer type optical information medium
    • 非掩模层型光信息介质的信息读出方法
    • US07496019B2
    • 2009-02-24
    • US10125476
    • 2002-04-19
    • Takashi KikukawaTatsuya KatoHajime UtsunomiyaHiroshi Shingai
    • Takashi KikukawaTatsuya KatoHajime UtsunomiyaHiroshi Shingai
    • G11B7/0045
    • G11B7/005G11B7/1263G11B7/24
    • An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.
    • 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时,物镜的数值孔径NA为0.70至0.85,并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL,读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时,物镜的数值孔径NA为0.60至0.65,并且凹坑或记录的标记具有高达0.36λ/ NA的最小尺寸PL,读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。
    • 46. 发明申请
    • Optical recording disc
    • 光记录盘
    • US20070098946A1
    • 2007-05-03
    • US10561090
    • 2004-06-30
    • Takashi KikukawaNarutoshi FukuzawaTatsuhiro Kobayashi
    • Takashi KikukawaNarutoshi FukuzawaTatsuhiro Kobayashi
    • B32B3/02
    • G11B7/2433B82Y10/00G11B7/2403G11B7/24065G11B7/252G11B7/2534G11B7/2542G11B2007/24314G11B2007/24316G11B2007/25706G11B2007/25708G11B2007/2571G11B2007/25713G11B2007/25715G11B2007/25716G11B2007/25718
    • It is an object of the present invention to provide an optical recording disc which can record data constituted by a recording mark train including recording marks and blank regions neighboring recording marks therein and reproduce the data therefrom even in the case where the lengths of a recording mark and a blank region between neighboring recording marks are shorter than the resolution limit, thereby markedly increasing the storage capacity thereof and can improve a C/N ratio of a reproduced signal and the reproduction durability thereof. An optical recording disc includes a substrate 2, a reflective layer 3, a third dielectric layer 4, a light absorption layer 5, a second dielectric layer 6, a decomposition reaction layer 7 containing platinum oxide as a primary component, a first dielectric layer 8 and a light transmission layer 9 and is constituted so that when the optical recording disc is irradiated with a laser beam 20 from the side of the light transmission layer 9, the platinum oxide contained in the decomposition reaction layer 7 as a primary component is decomposed into platinum and oxygen so that a bubble pit is formed in the decomposition reaction layer 7 by thus generated oxygen gas and fine particles of the noble metal penetrate into the bubble pit, thereby forming a recording mark in the decomposition reaction layer 7.
    • 本发明的目的是提供一种光学记录盘,其可以记录由包括记录标记和包括记录标记在内的空白区域的记录标记列构成的数据,并且即使在记录标记的长度的情况下再现数据 并且相邻记录标记之间的空白区域比分辨率极限短,从而显着增加其存储容量,并且可以提高再现信号的C / N比和其再现耐久性。 光记录盘包括基板2,反射层3,第三电介质层4,光吸收层5,第二电介质层6,含有氧化铂作为主要成分的分解反应层7,第一介电层8 和光透射层9,并且被构造成使得当从光透射层9的侧面照射激光束20时,作为主要成分的分解反应层7中包含的氧化铂被分解成 铂和氧,使得通过这样产生的氧气在分解反应层7中形成气泡,并且贵金属的细颗粒渗透到气泡坑中,从而在分解反应层7中形成记录标记。
    • 48. 发明申请
    • Optical recording disc
    • 光记录盘
    • US20060245338A1
    • 2006-11-02
    • US10565351
    • 2004-06-30
    • Takashi KikukawaNarutoshi FukuzawaTatsuhiro Kobayashi
    • Takashi KikukawaNarutoshi FukuzawaTatsuhiro Kobayashi
    • G11B7/24
    • G11B7/24065G11B7/00452G11B7/243
    • It is an object of the present invention to provide an optical recording disc which can record data constituted by a recording mark train including recording marks and blank regions neighboring recording marks therein and reproduce the data therefrom even in the case where the lengths of a recording mark and a blank region between neighboring recording marks are shorter than the resolution limit, thereby markedly increasing the storage capacity thereof and can improve the C/N ratio of the reproduced signal. An optical recording disc includes a substrate 2, a third dielectric layer 3, a light absorption layer 4, a second dielectric layer 5, a decomposition reaction layer 6 containing platinum oxide as a primary component, a first dielectric layer 7 and a light transmission layer 8 and wherein the decomposition reaction layer 6 has a thickness of 2 nm to 20 nm and the optical recoding disc is constituted so that when it is irradiated with a laser beam 20 from the side of the light transmission layer 8, the platinum oxide contained in the decomposition reaction layer 6 as a primary component is decomposed into platinum and oxygen so that a bubble pit is formed in the decomposition reaction layer 6 by thus generated oxygen gas and fine particles of the noble metal precipitate into the bubble pit, thereby forming a recording mark in the decomposition reaction layer 6.
    • 本发明的目的是提供一种光学记录盘,其可以记录由包括记录标记和包括记录标记在内的空白区域的记录标记列构成的数据,并且即使在记录标记的长度的情况下再现数据 并且相邻记录标记之间的空白区域比分辨率极限短,从而显着增加其存储容量,并且可以提高再现信号的C / N比。 光记录盘包括基板2,第三电介质层3,光吸收层4,第二电介质层5,含有氧化铂作为主要成分的分解反应层6,第一电介质层7和光透射层 8,其中分解反应层6具有2nm至20nm的厚度,并且光学记录盘被构造成使得当从透光层8的侧面照射激光束20时,包含在 作为主要成分的分解反应层6分解为铂和氧,从而通过这样产生的氧气在分解反应层6中形成气泡,并且贵金属的细颗粒沉淀到气泡坑中,从而形成记录 在分解反应层6中标记。