公开(公告)号：DE69123225D1

公开(公告)日：1997-01-02

申请号：DE69123225

申请日：1991-12-16

Applicant: SONY CORP

Inventor： SHIMOMA TAKASHI ,  SUZUKI KAYOKO ,  NAKAOKI ARIYOSHI ,  MUTO YOSHIHIRO

IPC: G11B11/10 ,  G11B11/105 ,  G11B11/12 ,  G11B13/04

公开(公告)号：DE69123225T2

公开(公告)日：1997-06-12

申请号：DE69123225

申请日：1991-12-16

Applicant: SONY CORP

Inventor： SHIMOMA TAKASHI ,  SUZUKI KAYOKO ,  NAKAOKI ARIYOSHI ,  MUTO YOSHIHIRO

IPC: G11B11/10 ,  G11B11/105 ,  G11B11/12 ,  G11B13/04

公开(公告)号：JPS6158194A

公开(公告)日：1986-03-25

申请号：JP17987084

申请日：1984-08-29

Applicant: Sony Corp

Inventor： OGAWA MASATAKA ,  NAKADA SATOSHI ,  SHIMOMA TAKASHI

IPC: C09K11/00 ,  C09K11/56 ,  H05B33/10

公开(公告)号：JP2006236487A

公开(公告)日：2006-09-07

申请号：JP2005050484

申请日：2005-02-25

Applicant: Sony Corp ,  ソニー株式会社

Inventor： FUJITA GORO ,  SHIMOMA TAKASHI ,  TAKAGAWA SHIGEKI

IPC: G11B7/24 ,  G11B7/254 ,  G11B7/257 ,  G11B7/26

Abstract: PROBLEM TO BE SOLVED: To prevent manufacture of a pirated disk formed by physically transferring a rugged shape formed on a substrate of an optical disk recording medium. SOLUTION: In the optical disk recording medium wherein at least a reflection film and a cover layer are layered on a substrate, main data are recorded by combination of pits and lands formed on the substrate and sub data are recorded by marks formed on the reflection film by irradiation with a laser beam by recording power, a protective film is inserted between the substrate and the reflection film. Though there has been a possibility of manufacture of a physical transfer disk to which main data and sub data are copied because the reflection film is deformed by thermal expansion or the like at the part where the marks are formed and the deformation extended to the substrate, the deformation of the reflection film is not extended to the substrate by insertion of the protective film. Thereby, manufacture of the pirated disk by physical transfer is effectively prevented. COPYRIGHT: (C)2006,JPO&NCIPI

Abstract translation: 解决的问题：为了防止通过物理地转移形成在光盘记录介质的基板上的粗糙形状而形成的盗版盘的制造。 解决方案：在其中至少反射膜和覆盖层层叠在基板上的光盘记录介质中，通过在基板上形成的凹坑和平台的组合记录主数据，并且通过在 通过记录功率通过激光束照射反射膜，保护膜插入在基板和反射膜之间。 虽然由于反射膜在形成标记的部分通过热膨胀等而变形并且延伸到基板的变形，因此可以制造主数据和子数据被复制到的物理转印盘， 通过插入保护膜，反射膜的变形不会延伸到基板。 从而有效地防止了通过物理传送制造盗版盘。 版权所有（C）2006，JPO＆NCIPI

公开(公告)号：JPH06215426A

公开(公告)日：1994-08-05

申请号：JP7219991

申请日：1991-03-13

Applicant: SONY CORP

Inventor： SHIMOMA TAKASHI ,  SUZUKI KAYOKO ,  NAKAOKI ARIKATSU ,  MUTO YOSHIHIRO

IPC: G11B11/10 ,  G11B11/105

Abstract: PURPOSE:To assure a stable overwriting action and reading out action and to obtain sufficient CN by selecting the compsns., film thicknesses, etc., of exchange bonded magnetic multilayered films and setting a change in the temp. characteristics of inversion magnetic fields within a specific range. CONSTITUTION:The Curie temps. of the first and second magnetic thin films 3, 4, defined as TC1, CC2, the coercive forces thereof as HC1, HC2, the saturation magnetizations thereof as MS1, MS2, the film thicknesses thereof as h1, h2, the magnetic wall energy as sigmaw, the external magnetic field to be impressed at the time of recording as Hex and an external sub-magnetic field as HSUB are so set as to satisfy the relation HC1>sigmaw/2MS1h1-HC2>sigmaw/2MS2h2-HC1+ or -sigmaw/2MS1 h1>HSUB-HC2+sigmaw/2MS2h2 HC1+Hex-HC2-sigmaw/2MS2h2>Hex at about the Curie temp. TC1 of the thin film 3. In addition, the temp. T0 at which -sigmaw/2MS1h1+HC1=0 is within a 100 deg.C

公开(公告)号：JP2007164868A

公开(公告)日：2007-06-28

申请号：JP2005358002

申请日：2005-12-12

Applicant: Sony Corp ,  ソニー株式会社

Inventor： NAKAOKI ARIKATSU ,  SHIMOMA TAKASHI

IPC: G11B7/24 ,  G11B7/254 ,  G11B7/257

Abstract: PROBLEM TO BE SOLVED: To record and/or reproduce reliably at high resolution with an optical recording medium for recording and/or reproducing by near field light using a condenser lens having a numerical aperture of >2.0. SOLUTION: In the optical recording medium 1 for recording and/or reproducing using a near field optical system having the numerical aperture NA of ≥2.0, at least a first light transmissible dielectric layer 64 having high refractive index is formed on a reproduction side surface 1A of the optical recording medium 1 and a second light transmissible dielectric layer 65 having high hardness is layered on the reproduction side uppermost surface on the first dielectric layer 64. A material having a refractive index n satisfying n≥NA is used as the first dielectric layer 64 to reliably attain high resolution. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：使用数值孔径> 2.0的聚光透镜，用用于通过近场光记录和/或再现的光记录介质以高分辨率可靠地记录和/或再现。 解决方案：在使用数值孔径NA为≥2.0的近场光学系统进行记录和/或再现的光记录介质1中，在再现时形成至少具有高折射率的第一透光电介质层64 光记录介质1的侧表面1A和具有高硬度的第二透光电介质层65层叠在第一介电层64上的再现侧最上表面上。使用具有满足n≥NA的折射率n的材料作为 第一介电层64，以可靠地获得高分辨率。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2000260076A

公开(公告)日：2000-09-22

申请号：JP5904499

申请日：1999-03-05

Applicant: SONY CORP

Inventor： SHIMOMA TAKASHI ,  SHINODA MASATAKA ,  TANAKA YASUTO ,  NAKAOKI ARIKATSU

IPC: G11B11/10

Abstract: PROBLEM TO BE SOLVED: To obtain excellent signal resolution and a high S/N ratio in a magneto-optical recording medium based on a CAD(Center Aperture Detection) system. SOLUTION: This magneto-optical recording medium is provided with a recording layer 1, a reproduction assisting layer 2, a cut layer 4 and a recording layer 3. The reproducing layer 1, the reproduction assisting layer 2 and the recording layer 3 are made of rare earth-transition metal magnetic layers at respective Curie temperatures of Tc1, Tc2 and Tc3, the easy magnetization axis of the recording layer 3 is set in a direction vertical to a film surface at a room temperature TRT, and the cut layer 4 is made of a non-magnetic layer. For the reproducing layer 1, its easy magnetization axis is set in a direction parallel to the film surface at the room temperature TRT and, at a reproducing temperature TI higher than this room temperature TRT, the easy magnetization axis is set in a direction vertical to the film surface. For the reproducing assisting layer 2, its easy magnetization axis is set in a direction parallel to the film surface from the room temperature TRT to Curie temperature Tc2. The relation of Curie temperatures among the magnetic layers is set at TC1> Tc2>TI, and at TC3>Tc2.

公开(公告)号：JPH04251454A

公开(公告)日：1992-09-07

申请号：JP2411991

申请日：1991-01-24

Applicant: SONY CORP

Inventor： TANAKA SHINTARO ,  SHIMOMA TAKASHI ,  ARAYA KATSUHISA ,  NAKAOKI ARIKATSU

IPC: G11B11/10 ,  G11B11/105

Abstract: PURPOSE:To improve the thermal reliability of the magneto-optical recording medium which allows overwriting by light intensity modulation and to prolong the life of repetitive recording. CONSTITUTION:This magneto-optical recording medium is magnetically coupled with memory layers of an artificial lattice structure repetitively laminated with rare earth metallic layers having 3.5 to 10.5Angstrom thickness and transition metal layers having 2.5 to 22.5Angstrom thickness and magnetic layers.

公开(公告)号：JP2007242181A

公开(公告)日：2007-09-20

申请号：JP2006065519

申请日：2006-03-10

Applicant: Sony Corp ,  ソニー株式会社

Inventor： TAKAGAWA SHIGEKI ,  FUJITA GORO ,  SHIMOMA TAKASHI

IPC: G11B7/24 ,  G11B7/253

Abstract: PROBLEM TO BE SOLVED: To prevent manufacturing of a pirated disk in an optical disk recording medium to be a ROM disk exclusive to reproduction wherein marks are formed on a reflection film by irradiation with laser light to additionally write data. SOLUTION: A pit transfer intermediate layer on which a pit surface is formed is provided separately from a first recording layer on a pit transfer substrate to form a multilayered disk structure and only a reflection layer of the other recording layer except the first recording layer is irradiated with the laser light to form the marks. Since a mark formation trace is not given to the substrate differently from a conventional constitution, manufacturing of the pirated disk by exposing the surface of the substrate and transferring the physical shape thereof can be prevented. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了防止将光盘记录介质中的盗版盘制造成专用于再现的ROM盘，其中通过用激光照射在反射膜上形成标记以附加地写入数据。 解决方案：与凹坑转移基板上的第一记录层分开地提供其上形成有凹坑表面的凹坑转移中间层，以形成多层盘结构，并且仅仅除了第一记录之外的另一个记录层的反射层 用激光照射层以形成标记。 由于与常规结构不同，不对基板标记形成迹线，可以防止通过使基板的表面露出并转印其物理形状来制造盗版盘。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2007149305A

公开(公告)日：2007-06-14

申请号：JP2006023097

申请日：2006-01-31

Applicant: Sony Corp ,  ソニー株式会社

Inventor： SAKAMOTO TETSUHIRO ,  SHIMOMA TAKASHI ,  TAKAGAWA SHIGEKI ,  NAKANO ATSUSHI ,  FUJITA GORO

IPC: G11B7/258

CPC classification number: G11B20/00688 ,  G11B7/0053 ,  G11B7/259 ,  G11B20/00086 ,  G11B20/00115 ,  G11B20/00594 ,  G11B20/10 ,  G11B2220/218 ,  G11B2220/2541 ,  Y10T428/21

Abstract: PROBLEM TO BE SOLVED: To determine a pirated optical recording medium manufactured by physically transferring the shape of pits and lands formed on the substrate of an optical recording medium. SOLUTION: A reflective film 102 is composed of an Ag-alloy film of Ag 100-x X x on a substrate where main data by a combination of pit and land are recorded, wherein the X is at least one type of an element or more among Ti, W, Ta, V, Mo, Nb and Zr, a record mark reproducing signal level of write-once recording sub-data to the reflective film increases, and the surface shape of pits and lands of the substrate is physically transferred and created to constitute the optical recording medium 100. In this case, a mark where a reproduced signal level decreases can be formed, so that a pirated optical recording medium can be determined. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：确定通过物理转移形成在光学记录介质的基板上的凹坑和平台的形状制造的盗版光学记录介质。 解决方案：反射膜102由基底上由Ag 100-x X x 的Ag合金膜构成，其中主要数据通过凹坑和 记录Ti，W，Ta，V，Mo，Nb，Zr中的至少一种以上的元素，将一次记录子数据的记录标记再生信号电平记录到反射膜 物理地转移和产生基片的凹坑和平台的表面形状以构成光学记录介质100.在这种情况下，可以形成再现信号电平降低的标记，使得盗版光学记录介质可以 确定。 版权所有（C）2007，JPO＆INPIT