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    • 51. 发明申请
    • Data recording and readingout system
    • 数据记录和读出系统
    • US20060062110A1
    • 2006-03-23
    • US11217294
    • 2005-09-02
    • Takashi KikukawaNarutoshi FukuzawaTatsuhiro KobayashiToshiki AoiHajime Utsunomiya
    • Takashi KikukawaNarutoshi FukuzawaTatsuhiro KobayashiToshiki AoiHajime Utsunomiya
    • G11B19/02G11B5/09
    • G11B7/24085G11B7/122G11B7/1387G11B7/24065G11B7/243G11B7/257G11B2007/13727G11B2007/24304G11B2007/2432
    • In a data recording and readingout system in which data is recorded and readout, or is readout on, or from an optical recording medium 1 by irradiating a laser beam having a wavelength “λ” via an objective lens of a numerical aperture “NA” onto said optical recording medium, while the optical recording medium contains a layered structure formed by sandwiching a dielectric layer 6 between a recording layer 7 and an optical absorption layer 5, with respect to the optical recording medium 1 arranged in such a manner that data recorded by a recorded mark train can be readout and the recorded mark train contains a recorded mark smaller than, or equal to a limit of resolution, the laser beam is irradiated via the objective lens and a solid immersion lens having a refractive index “n” which is positioned between the optical recording medium and the objective lens, so that the data is recorded and readout, or is readout with respect to the optical recording medium by a recorded mark train which contains a recorded mark smaller than, equal to “λ”/(4·n2·NA).”
    • 在数据记录和读出系统中,通过经由数值孔径“NA”的物镜照射具有波长“λ”的激光束的数据被记录和读出或从光记录介质1读出数据, 所述光记录介质,而光记录介质包含通过将介质层6夹在记录层7和光吸收层5之间而形成的层状结构,相对于光记录介质1,光记录介质1以 可以读出记录标记列,并且记录标记列包含小于或等于分辨率的记录标记,经由物镜照射激光束和具有折射率“n”的固体浸没透镜,其为 位于光学记录介质和物镜之间,使得数据被记录和读出,或通过记录的标记列相对于光学记录介质读出 其包含小于等于“λ”/(4 .n 2 .NA)的记录标记。
    • 55. 发明申请
    • Optical recording disk
    • 光盘录像机
    • US20050169157A1
    • 2005-08-04
    • US10974552
    • 2004-10-27
    • Narutoshi FukuzawaTatsuhiro KobayashiTakashi Kikukawa
    • Narutoshi FukuzawaTatsuhiro KobayashiTakashi Kikukawa
    • G11B7/24035G11B7/24067G11B7/243G11B7/257G11B7/258G11B7/259G11B7/24
    • G11B7/00452G11B7/24035G11B7/24067G11B7/243G11B7/257G11B7/259G11B2007/24304G11B2007/24312Y10T428/21
    • An optical recording disc is constituted by laminating a substrate, a reflective layer, a third dielectric layer, a light absorption layer, a second dielectric layer, a metal recording layer, a first dielectric layer and a light transmission layer in this order, and is constituted so that when a laser beam is irradiated onto the optical recording disc from the side of the light transmission layer, the metal recording layer is deformed and/or is changed in quality to form a state-changed region in the metal recording layer and the second dielectric layer and the light absorption layer are deformed and/or are changed in quality to form state-changed regions in the second dielectric layer and the light absorption layer, whereby a recording mark is formed in the metal recording layer, the second dielectric layer and the light absorption layer. In the thus constituted optical recording disc, even in the case where the length of the recording mark and the length of a blank region between neighboring recording marks are shorter than the resolution limit, it is possible to record data constituted by a recording mark train including the recording mark and the blank region in the optical recording disc and reproduce the data therefrom in a desired manner and markedly increase the storage capacity of the optical recording disc.
    • 光记录盘依次层叠基板,反射层,第三介电层,光吸收层,第二介电层,金属记录层,第一介质层和光透射层,并且是 构成为使得当激光束从光透射层的一侧照射到光学记录盘上时,金属记录层变形和/或改变质量以在金属记录层中形成状态变化区域,并且 第二电介质层和光吸收层的质量变化和/或改变以在第二电介质层和光吸收层中形成状态变化区域,由此在金属记录层中形成记录标记,第二介电层 和光吸收层。 在这样构成的光记录盘中,即使在记录标记的长度和相邻记录标记之间的空白区域的长度比分辨率极限短的情况下,也可以记录由包括 光记录盘中的记录标记和空白区域,并以期望的方式再现其数据,并显着地增加了光记录盘的存储容量。
    • 57. 发明申请
    • METHOD FOR MANUFACTURING MAGNETIC RECORDING MEDIUM
    • 制造磁记录介质的方法
    • US20110024388A1
    • 2011-02-03
    • US12842502
    • 2010-07-23
    • Takahiro SUWANarutoshi FukuzawaShuichi OkawaYoshinori Uchiyama
    • Takahiro SUWANarutoshi FukuzawaShuichi OkawaYoshinori Uchiyama
    • G11B5/84
    • G11B5/855
    • A method for manufacturing a magnetic recording medium is provided which can sufficiently reduce variations in surface roughness even in the simultaneous presence of a region of a relatively wide concave and convex portion and a region of a relatively narrow concave and convex portion in the recording layer. The method includes the steps of etching a recording layer based on a (first) mask layer to process it in a concavo-convex pattern, and depositing a filler over the recording layer and the mask layer to fill a concave portion with the filler. In between those steps, provided is the step of removing part of the first mask layer over a recording element (a convex portion of the recording layer) by dry etching in which an etching rate for the mask layer is higher than that for the recording layer so that the mask layer remains over the recording element.
    • 提供了一种用于制造磁记录介质的方法,即使在相对较宽的凹凸部分的区域和记录层中相对窄的凹凸部分的区域同时存在的情况下,也可以充分减小表面粗糙度的变化。 该方法包括以下步骤:基于(第一)掩模层蚀刻记录层,以凹凸图案处理该记录层;以及在记录层和掩模层上沉积填料以填充填料的凹部。 在这些步骤之间,提供了通过干蚀刻在记录元件(记录层的凸部)上去除部分第一掩模层的步骤,其中掩模层的蚀刻速率高于记录层的蚀刻速率 使得掩模层保留在记录元件上。
    • 59. 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。