公开(公告)号：EP1282118B1

公开(公告)日：2012-10-10

申请号：EP02023051.2

申请日：1996-02-09

申请人： Hitachi, Ltd.

发明人： Miyamoto, Harukazu ,  Minemura, Hiroyuki ,  Sugiyama, Hisataka

IPC分类号： G11B7/007 ,  G11B11/10 ,  G11B7/09 ,  G11B7/013

CPC分类号： G11B11/10565 ,  G11B7/0053 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/0079 ,  G11B7/0901 ,  G11B7/0938 ,  G11B7/094 ,  G11B7/24079 ,  G11B7/24085 ,  G11B7/26 ,  G11B11/10576 ,  G11B11/10578 ,  G11B11/10584 ,  G11B27/19 ,  G11B27/24 ,  G11B27/3027 ,  G11B2220/216 ,  G11B2220/2525

公开(公告)号：EP0887790B1

公开(公告)日：2011-05-04

申请号：EP98111183.4

申请日：1998-06-18

申请人： Sharp Kabushiki Kaisha

发明人： Okumura, Tetsuya ,  Fuji, Hiroshi

IPC分类号： G11B7/125 ,  G11B11/10 ,  G11B7/007

CPC分类号： G11B7/126 ,  G11B7/005 ,  G11B7/00745 ,  G11B7/013 ,  G11B11/10515 ,  G11B11/10595 ,  G11B27/3027

公开(公告)号：EP1406247B1

公开(公告)日：2009-03-25

申请号：EP01932224.7

申请日：2001-05-23

申请人： FUJITSU LIMITED

发明人： INAMURA, Ryosaku, FUJITSU LIMITED ,  SHIMODA, Kazumasa, FUJITSU LIMITED ,  SUGIMOTO, Toshio, FUJITSU LIMITED ,  UZUMAKI, Takuya, FUJITSU LIMITED

IPC分类号： G11B5/667 ,  G11B5/02 ,  G11B11/10

CPC分类号： G11B5/7325 ,  G11B5/00 ,  G11B5/012 ,  G11B5/02 ,  G11B5/64 ,  G11B5/66 ,  G11B5/82 ,  G11B2005/0002 ,  G11B2005/0021 ,  G11B2005/0029

摘要： A vertical recording type magnetic recording medium which includes at least a vertical magnetic recording layer and a backing layer which backs the vertical magnetic recording layer and is magnetized in a direction toward the inside of the surface. The backing layer is made of ferromagnetic materia1 which has a compensation temperature in the neighborhood of a recording/reproducing temperature at which magnetic information, recorded in the vertica1 magnetic recording layer, is reproduced.

公开(公告)号：EP2030202A1

公开(公告)日：2009-03-04

申请号：EP06757783.3

申请日：2006-05-24

申请人： Stichting Katholieke Universiteit, more particularly the Radboud University Nijmegen Medical Centre ,  Rasing, Theodorus Henricus Maria ,  Kiriliouk, Andrei Ivanovitch ,  Kimel, Alexey Voldemarovitsj ,  Stanciu, Claudiu Daniel ,  Hansteen, Fredrik ,  Itoh, Akiyoshi ,  Tsukamoto, Arata

发明人： RASING, Theodorus Henricus Maria ,  KIRILIOUK, Andrei Ivanovitch ,  KIMEL, Alexey Voldemarovitsj ,  STANCIU, Claudiu Daniel ,  HANSTEEN, Fredrik ,  ITOH, Akiyoshi ,  TSUKAMOTO, Arata

IPC分类号： G11B11/10 ,  G11B11/105

CPC分类号： G11B11/10539 ,  G11B5/02 ,  G11B11/10506 ,  G11B11/10584 ,  G11B11/10591 ,  G11B2005/0002 ,  G11C13/06 ,  G11C19/0808

摘要： The invention relates to a magneto-optical switching device for switching magnetization in a medium, comprising a magnetizable medium. According to the invention, a radiation system suited for imparting angular momentum to the magnetic spin system of said magnetizable medium, so as to selectively orient the magnetization of said medium. In addition, the invention relates to a method of switching a magnetizable medium, comprising providing a magnetizable medium; providing a radiation beam of a selectively chosen angular momentum; and targeting said radiation beam to said medium so as to transfer said angular momentum to a magnetic spin system of said magnetizable medium. Accordingly, spin states in magnetic materials can be manipulated using radiation of a suitable angular momentum. An effective magnetic field is generated for orienting the magnetization of the domains and can simultaneously be used to locally heat the material.

公开(公告)号：EP0997894B1

公开(公告)日：2008-04-23

申请号：EP99308562.0

申请日：1999-10-28

申请人： FUJITSU LIMITED ,  Sony Corporation

发明人： Tamanoi, Ken, c/o Fujitsu Limited ,  Muto, Yoshihiro, c/o Sony Corporation

IPC分类号： G11B11/10

CPC分类号： G11B11/10591 ,  G11B11/10515 ,  G11B11/10582 ,  G11B11/10584

公开(公告)号：EP0915458B1

公开(公告)日：2008-01-09

申请号：EP98121218.6

申请日：1998-11-06

申请人： FUJI XEROX CO., LTD.

发明人： Ueyanagi, Kiichi c/o Fuji Xerox Co., Ltd. ,  Baba, Kazuo c/o Fuji Xerox Co., Ltd.

IPC分类号： G11B7/12 ,  G11B7/135 ,  G11B11/10

CPC分类号： G11B7/1374 ,  G11B7/12 ,  G11B7/1353 ,  G11B7/1362 ,  G11B7/1387 ,  G11B2007/13725

公开(公告)号：EP0844611A9

公开(公告)日：2007-03-28

申请号：EP98100524.2

申请日：1994-01-19

申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

发明人： Oshima, Mitsuaki ,  Komoda, Hideaki ,  Ushigome, Hisashi

IPC分类号： G11B13/00 ,  G11B11/10 ,  G11B20/00 ,  G11B13/04 ,  G11B7/007 ,  G11B7/24

CPC分类号： G11B20/00594 ,  G06F3/0601 ,  G06F3/0607 ,  G06F3/0644 ,  G06F3/0661 ,  G06F3/0677 ,  G06F21/00 ,  G06F2003/0697 ,  G11B5/00 ,  G11B5/1278 ,  G11B5/17 ,  G11B5/2654 ,  G11B5/5526 ,  G11B5/5543 ,  G11B7/0037 ,  G11B7/005 ,  G11B7/00736 ,  G11B7/0079 ,  G11B7/013 ,  G11B7/24 ,  G11B7/26 ,  G11B11/10556 ,  G11B11/10595 ,  G11B13/00 ,  G11B13/04 ,  G11B13/045 ,  G11B17/04 ,  G11B17/043 ,  G11B17/056 ,  G11B19/02 ,  G11B19/04 ,  G11B19/10 ,  G11B19/12 ,  G11B19/247 ,  G11B20/00086 ,  G11B20/00094 ,  G11B20/00166 ,  G11B20/00188 ,  G11B20/0021 ,  G11B20/0026 ,  G11B20/00601 ,  G11B20/0071 ,  G11B20/00876 ,  G11B20/1217 ,  G11B20/1833 ,  G11B20/1866 ,  G11B23/0302 ,  G11B23/0308 ,  G11B23/281 ,  G11B23/284 ,  G11B23/40 ,  G11B23/44 ,  G11B25/04 ,  G11B27/034 ,  G11B27/105 ,  G11B27/107 ,  G11B27/11 ,  G11B27/24 ,  G11B27/3027 ,  G11B27/3063 ,  G11B27/329 ,  G11B27/34 ,  G11B27/36 ,  G11B31/00 ,  G11B33/121 ,  G11B2020/1259 ,  G11B2220/20 ,  G11B2220/211 ,  G11B2220/213 ,  G11B2220/237 ,  G11B2220/2525 ,  G11B2220/2529 ,  G11B2220/2545 ,  G11B2220/2587 ,  G11B2220/65 ,  G11B2220/655 ,  G11B2220/90

摘要： An optical disc comprising: a first optical recording area storing first data represented by a secret code; and a second optical recording area including a barcode-like pattern (387a) representing second data containing information of an ID number for the optical disc, wherein the information of the ID number forms a secret code unlocking key for decoding the first data represented by the secret code into corresponding non-secret data.

摘要翻译： 一种光盘，包括：存储由密码表示的第一数据的第一光记录区; 以及第二光学记录区域，包括代表包含光盘的ID号信息的第二数据的条形码图案（387a），其中ID号码的信息形成用于解码由第一数据表示的第一数据的密码解锁密钥 秘密代码转换成相应的非秘密数据。

公开(公告)号：EP0908878B1

公开(公告)日：2006-08-02

申请号：EP98104361.5

申请日：1998-03-11

申请人： FUJITSU LIMITED

发明人： Morimoto, Yasuaki, c/o Fujitsu Limited

IPC分类号： G11B11/10 ,  G11B7/135

CPC分类号： G11B7/1365 ,  G11B7/00718 ,  G11B7/131 ,  G11B7/1353 ,  G11B7/1356 ,  G11B11/10543

公开(公告)号：EP1158507A4

公开(公告)日：2006-07-26

申请号：EP99901964

申请日：1999-02-09

申请人： JAPAN SCIENCE & TECH AGENCY

发明人： MUNEKATA HIROO ,  KOSHIHARA SHINYA

IPC分类号： G11B11/10 ,  G11B11/105 ,  H01F10/12 ,  H01F10/13 ,  H01F10/16 ,  G11B7/24

CPC分类号： G11B11/10586 ,  G11B11/10584

摘要： A magneto-optical recording medium that remarkably reduces the amount of time and energy required for writing and reading while maintaining high-density recording, thus providing a compact and energy-saving magneto-optical recording device. The magneto-optical medium comprises a recording layer (23) composed of material with photoinduced effects and a memory layer (24) composed of ferromagnetic film with vertical magnetic anisotropy, so that it may directly produce magnetism by photoinduced magnetization when irradiated.

公开(公告)号：EP0974960A4

公开(公告)日：2006-06-14

申请号：EP98961479

申请日：1998-12-22

申请人： SANYO ELECTRIC CO

发明人： TAKAGI NAOYUKI ,  YAMAGUCHI ATSUSHI

IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B20/10

CPC分类号： G11B20/10009 ,  G11B11/10515 ,  G11B11/10595

摘要： A laser beam is projected from an optical head (40) while applying an alternating field from a magnetic head (52). A reproduced signal is fed from the optical head (40) through a reproduced signal amplifying circuit (41) to a reproduced signal detection circuit (45). A detection signal CK from discontinuous regions provided at specified intervals in grooves made in a magnetooptical recording medium (1) is inputted to a circuit (46) for generating an external synchronizing signal SYN. In response to the external synchronizing signal SYN, the reproduced signal detection circuit (45) calculates the difference between the reproduced signal generated while a magnetic field for enlarging the magnetic domains is applied and the reproduced signal generated while a magnetic field for erasing the magnetic domains. The difference is detected as a reproduced signal RF. A low frequency "beat" contained in the reproduced signal from the optical head (40) is canceled and an accurate reproduced signal RF is produced.