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253 条记录 (耗时 0.084 秒)

    Optical reproduction apparatus
    134.
    发明授权
    Optical reproduction apparatus 有权
    光学再现装置

    公开(公告)号：US06538981B2

    公开(公告)日：2003-03-25

    申请号：US10067848

    申请日：2002-02-08

    申请人： Harukazu Miyamoto ,  Hirofumi Sukeda ,  Motoyasu Terao ,  Hiroyuki Minemura ,  Tetsuo Andou

    发明人： Harukazu Miyamoto ,  Hirofumi Sukeda ,  Motoyasu Terao ,  Hiroyuki Minemura ,  Tetsuo Andou

    IPC分类号： G11B724

    CPC分类号： G11B7/24085 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/094 ,  G11B7/26 ,  G11B11/10578 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B2220/20 ,  G11B2220/2525

    摘要： An optical reproduction apparatus for reproducing information from an optical recording medium having grooves and lands alternately provided in a radial direction, information recording areas being formed in both of said grooves and said lands, and at least one prepit region where a groove is not formed. In the prepit region, first information marks are disposed on a virtual extension of a first boundary between one groove and one adjacent land and second information marks are disposed on a virtual extension of a second boundary between the one groove and an other adjacent land. A trailing edge of the first information marks is aligned in the radial direction. The optical reproduction apparatus includes an irradiation source for irradiating a light spot on the optical recording medium, a detector for detecting a reflected light from the optical recording medium, and a reproducer for reproducing information by using a signal from the detector.

    摘要翻译： 一种用于从具有沿径向方向交替设置的沟槽和纹路的光记录介质再现信息的光学再现装置，在两个所述凹槽和所述平台中形成的信息记录区域以及不形成凹槽的至少一个预凹坑区域。 在预制区域中，第一信息标记设置在一个沟槽和一个相邻焊盘之间的第一边界的虚拟延伸部上，而第二信息标记设置在一个沟槽和另一个相邻焊盘之间的第二边界的虚拟延伸部分上。 第一信息标记的后沿在径向对准。 光学再现装置包括用于照射光学记录介质上的光点的照射源，用于检测来自光学记录介质的反射光的检测器和用于通过使用来自检测器的信号再现信息的再现器。

    Magnetic recording disk, method of the magnetic recording disk and magnetic recording apparatus
    136.
    发明授权
    Magnetic recording disk, method of the magnetic recording disk and magnetic recording apparatus 失效
    磁记录盘，磁记录盘的方法和磁记录装置

    公开(公告)号：US06410133B1

    公开(公告)日：2002-06-25

    申请号：US09478377

    申请日：2000-01-06

    申请人： Fumiyoshi Kirino ,  Nobuyuki Inaba ,  Ken Takahashi ,  Takashi Naitou ,  Sumio Hosaka ,  Eiji Koyama ,  Motoyasu Terao ,  Hiroki Yamamoto ,  Hiroki Kuramoto

    发明人： Fumiyoshi Kirino ,  Nobuyuki Inaba ,  Ken Takahashi ,  Takashi Naitou ,  Sumio Hosaka ,  Eiji Koyama ,  Motoyasu Terao ,  Hiroki Yamamoto ,  Hiroki Kuramoto

    IPC分类号： G11B566

    CPC分类号： G11B5/7325 ,  G11B5/012 ,  G11B5/02 ,  G11B5/656 ,  G11B2005/0002 ,  Y10S428/90 ,  Y10T428/265

    摘要： A magnetic recording medium includes a non-magnetic substrate, an inorganic compound layer that is formed on the substrate and which contains a crystalline first oxide and a second oxide, and a magnetic layer that is formed on the inorganic compound layer. The crystalline first oxide comprises at least one oxide selected from cobalt oxide, chromium oxide, iron oxide and nickel oxide. The second oxide comprises at least one oxide selected from silicon oxide, aluminum oxide, titanium oxide, tantalum oxide and zinc oxide. The second oxide is present at a grain boundary of crystal grains of said first oxide. According to the present invention, magnetic recording media low in noise and diminished in thermal fluctuation and thermal decay can be obtained by making fine the crystal grains of a magnetic layer and controlling the dispersion of the grain size. Thus, magnetic recording apparatuses can be realized which can perform an ultrahigh density magnetic recording of higher than 20 Gb/in2.

    摘要翻译： 磁记录介质包括非磁性基板，形成在基板上并含有结晶的第一氧化物和第二氧化物的无机化合物层和形成在无机化合物层上的磁性层。 结晶第一氧化物包括选自氧化钴，氧化铬，氧化铁和氧化镍中的至少一种氧化物。 第二氧化物包括选自氧化硅，氧化铝，氧化钛，氧化钽和氧化锌中的至少一种氧化物。 第二氧化物存在于所述第一氧化物的晶粒的晶界处。 根据本发明，通过使磁性层的晶粒细化并控制晶粒尺寸的分散，可以获得低噪声和热波动和热衰减减小的磁记录介质。 因此，可以实现能够执行高于20Gb / in2的超高密度磁记录的磁记录装置。

    Recording member
    140.
    发明授权
    Recording member 失效
    录音成员

    公开(公告)号：US4348461A

    公开(公告)日：1982-09-07

    申请号：US160661

    申请日：1980-06-18

    申请人： Motoyasu Terao ,  Yoshio Taniguchi ,  Shinkichi Horigome ,  Masahiro Ojima ,  Kazuo Shigematsu ,  Keizo Kato ,  Yoshinori Miyamura ,  Seiji Yonezawa

    发明人： Motoyasu Terao ,  Yoshio Taniguchi ,  Shinkichi Horigome ,  Masahiro Ojima ,  Kazuo Shigematsu ,  Keizo Kato ,  Yoshinori Miyamura ,  Seiji Yonezawa

    IPC分类号： B41M5/26 ,  G03C1/705 ,  G11B7/24 ,  G11B7/243 ,  B32B5/14

    CPC分类号： G11B7/243 ,  G03C1/705 ,  G11B2007/24314 ,  G11B2007/24316 ,  Y10S428/913 ,  Y10S430/146 ,  Y10S430/165 ,  Y10T428/31

    摘要： A recording member having a predetermined substrate, and a thin film which is formed on the substrate and which is formed with recesses or pits for recording information when irradiated with a working beam, characterized in that said thin film is formed of an inorganic material which contains at least arsenic, selenium and tellurium, and that a distribution of either of said Se and said Te decreases from a part near the surface of said thin film towards a central part thereof, while a distribution of said As increases from a part near the surface towards said central part, is disclosed. This recording member can afford a high signal-to-noise ratio and a long lifetime. It is preferable that the distribution of said Se decreases so as to be at least 50 atomic-% in terms of the content of said Se in a part being the closest to the surface of said thin film and to be at most 40 atomic-% in terms of the average content of said Se over the whole thin film, and that the distribution of said As increases so as to be at most 15 atomic-% in terms of the content of said As in the closest part and to be 5 to 35 atomic-% in terms of the average content of said As in said whole thin film. The Se-Te-As-based material may well be doped with at least one element selected from the group consisting of Ge, S, Tl, Sn, Pb, In and Ta, within a range of 2 to 15 atomic-%.

    摘要翻译： 具有预定基板的记录部件和形成在基板上并且在用工作光束照射时用于记录信息的凹坑或凹坑形成的薄膜，其特征在于，所述薄膜由无机材料形成，所述无机材料包含 至少砷，硒和碲，并且所述Se和所述Te中的任一个的分布从所述薄膜的表面附近的部分向其中心部分减少，而所述As的分布从表面附近的部分增加 朝向所述中心部分。 该记录部件可以提供高的信噪比和长的使用寿命。 优选所述Se的分布以与所述薄膜表面最接近的部分中的所述Se的含量为至少50原子％，并且为至多40原子％ 就所述Se在整个薄膜上的平均含量而言，所述As的分布以所述As在最接近的部分的含量为最多为15原子％，并且为5〜 在所述整个薄膜中，所述As的平均含量为35原子％。 可以在2至15原子％的范围内掺杂选自由Ge，S，Tl，Sn，Pb，In和Ta组成的组中的至少一种元素的Se-Te-As基材料。