公开(公告)号：US08520481B2

公开(公告)日：2013-08-27

申请号：US13032258

申请日：2011-02-22

申请人： Takashi Kikukawa ,  Atsuko Kosuda ,  Motohiro Inoue ,  Hideki Hirata

发明人： Takashi Kikukawa ,  Atsuko Kosuda ,  Motohiro Inoue ,  Hideki Hirata

IPC分类号： G11B7/00

CPC分类号： G11B7/24038

摘要： In a multilayer optical recording medium, it is an object to suppress generation of crosstalk while reducing an interlayer distance of recording and reading layers. In an optical recording medium including three or more recording and reading layers, a first distance, and a second distance greater than the first distance by 3 μm or more are alternately defined as interlayer distances of recording and reading layers.

摘要翻译： 在多层光记录介质中，其目的是抑制串扰的产生，同时减少记录和读取层的层间距离。 在包括三个或更多个记录和读取层的光学记录介质中，第一距离和大于第一距离3μm或更大的第二距离交替地被定义为记录和读取层的层间距离。

公开(公告)号：US08213279B2

公开(公告)日：2012-07-03

申请号：US13032242

申请日：2011-02-22

申请人： Atsuko Kosuda ,  Motohiro Inoue ,  Takashi Kikukawa ,  Hideki Hirata

发明人： Atsuko Kosuda ,  Motohiro Inoue ,  Takashi Kikukawa ,  Hideki Hirata

IPC分类号： G11B7/00

CPC分类号： G11B7/24079 ,  G11B7/00736 ,  G11B7/24038 ,  G11B2007/0013

摘要： An optical recording medium including recording and reading layers and a servo layer increases the recording capacity thereof. In the optical recording medium including the plurality of recording and reading layers and the servo layer, the servo layer has a groove and a land that can be used to perform tracking control with a long-wavelength servo beam. Information is recorded on the recording and reading layers with a recording and reading beam having a wavelength shorter than the wavelength of the servo beam. Recording marks are formed on the recording and reading layers while both the groove and land are tracked.

摘要翻译： 包括记录和读取层和伺服层的光学记录介质增加其记录容量。 在包括多个记录和读取层和伺服层的光学记录介质中，伺服层具有可用于利用长波长伺服光束执行跟踪控制的凹槽和平台。 信息被记录在具有比伺服光束的波长短的波长的记录和读取光束的记录和读取层上。 在记录和读取层上形成记录标记，同时跟踪凹槽和平台。

公开(公告)号：US07760615B2

公开(公告)日：2010-07-20

申请号：US12155972

申请日：2008-06-12

申请人： Hiroshi Shinngai ,  Hideki Hirata ,  Tatsuya Kato ,  Hiroshi Takasaki ,  Yasuhiro Takagi ,  Masaki Sobu ,  Masanori Kosuda

发明人： Hiroshi Shinngai ,  Hideki Hirata ,  Tatsuya Kato ,  Hiroshi Takasaki ,  Yasuhiro Takagi ,  Masaki Sobu ,  Masanori Kosuda

IPC分类号： G11B7/24

CPC分类号： G11B7/24 ,  G11B7/24038 ,  G11B7/259 ,  G11B2007/24308 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25715

摘要： A rewritable phase-change optical recording medium is provided, which includes a substrate, a first information layer, a spacer layer, a second information layer, and a cover layer. The second information layer includes a recording film containing Sb as a main component and V or V and In as second components. When an amorphous mark formed in the recording film is irradiated with a reproduction beam, crystallization of the amorphous mark occurs only in a central portion in the width direction of the amorphous mark. The width direction is orthogonal to the scanning direction of the laser beam. The recording film is formed of a material that exhibits a change in degree of modulation of 5% or less when recorded information is repeatedly reproduced. The change in degree of modulation is a change from when the number of times of reproduction is 100,000 to when it is 400,000.

摘要翻译： 提供了一种可重写的相变光学记录介质，其包括基板，第一信息层，间隔层，第二信息层和覆盖层。 第二信息层包括含有Sb作为主要成分的记录膜，V或V和In作为第二成分。 当在再现光束照射记录膜中形成的非晶标记时，仅在无定形标记的宽度方向的中心部分发生非晶标记的结晶。 宽度方向与激光束的扫描方向正交。 当记录信息被重复再现时，记录膜由表现出5％以下的调制度变化的材料形成。 调制度的变化是从复制次数为100,000到40万的时间的变化。

公开(公告)号：US07283457B2

公开(公告)日：2007-10-16

申请号：US10493420

申请日：2002-10-21

申请人： Kenji Yamaga ,  Hideki Hirata

发明人： Kenji Yamaga ,  Hideki Hirata

IPC分类号： G11B7/24

CPC分类号： G11B7/24079 ,  G11B7/00 ,  G11B7/00375 ,  G11B7/00736

摘要： A conventional mechanical precision measuring device is used effectively in the measurement of the eccentricity of a high density optical disc. A DVR optical disc 2 comprises a pattern 4 of fine depressions and protrusions conformed to the intended format of the disc (a first depressions and protrusions: pits and/or grooves) formed within an information recording area 6 of the disc, as well as a pattern 8 of fine depressions and protrusions for measuring the eccentricity (a second depressions and protrusions), which is formed in an area other than the information recording area 6, and is formed in accordance with a CD format having lower recording density than that of the format defined for the DVR optical disc 2. By using this pattern 8 of fine depressions and protrusions for mechanical detection, conventional mechanical precision measuring devices designed for the CD family can be used as it is, for measuring the eccentricity (mechanical precision) of the DVR optical disc 2.

摘要翻译： 传统的机械精密测量装置有效地用于测量高密度光盘的偏心度。 DVR光盘2包括细分凹凸图案4，其形成在盘的信息记录区域6内形成的盘的预期格式（第一凹部和突起：凹坑和/或凹槽），以及 用于测量在信息记录区域6以外的区域中形成的偏心率（第二凹陷和突起）的细小凹陷和突起的图案8，并且根据具有比记录密度低的记录密度的CD格式形成 为DVR光盘2定义的格式。 通过使用这种用于机械检测的精细凹凸和突起的图案8，可以直接使用为CD系列设计的常规机械精密测量装置，用于测量DVR光盘2的偏心率（机械精度）。

公开(公告)号：US07203150B2

公开(公告)日：2007-04-10

申请号：US10485664

申请日：2002-09-24

申请人： Hiroyasu Inoue ,  Hideki Hirata

发明人： Hiroyasu Inoue ,  Hideki Hirata

IPC分类号： G11B5/09

CPC分类号： G11B7/252 ,  G11B7/0062 ,  G11B7/2403 ,  G11B7/2533 ,  G11B7/2534 ,  G11B7/2542 ,  G11B7/2578 ,  G11B7/259 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25715 ,  G11B2007/25716

摘要： An optical recording medium and a recording system for the same are provided, which can dissipate heat produced by a laser beam during recording operations to thereby increase the erasing power margin of the laser beam which allows the playback jitter value to take on a certain value or less.A recording system 1 includes an optical recording medium 10 and an optical recording apparatus 30. The optical recording medium 10 has a reflective film 16, a second dielectric layer 18, a recording layer 20, a heat sink layer 24, and a light-transmitting layer 26, which are formed on a support substrate 12. The heat sink layer 24 is made of a material having a certain range of thermal conductivity, e.g., alumina. The optical recording apparatus 30 allows a laser beam of 450 nm or less in wavelength to be incident from the light-transmitting layer 26 via a lens system having an objective lens with a numerical aperture of 0.7 or more. The optical recording medium 10 dissipates heat produced by the laser beam through the heat sink layer 24 to thereby prevent an increase in temperature of the recording layer 20, such that the relation between the recording power Pw of the laser beam and the erasing power Pe satisfies 0.7≦Pe/Pw≦1.0.

摘要翻译： 提供了一种用于其的光记录介质和记录系统，其可以在记录操作期间散发由激光束产生的热量，从而增加激光束的擦除功率余量，从而允许重放抖动值取一定值，或者 减。

公开(公告)号：US07055162B2

公开(公告)日：2006-05-30

申请号：US11091766

申请日：2005-03-29

申请人： Tsuyoshi Komaki ,  Kenji Yamaga ,  Hideki Hirata

发明人： Tsuyoshi Komaki ,  Kenji Yamaga ,  Hideki Hirata

IPC分类号： G11B7/24 ,  B29D17/00

CPC分类号： G11B7/24056 ,  G11B7/26 ,  G11B11/10582 ,  G11B11/10584

摘要： An optical information medium includes a disk-shaped substrate (100) having a center hole (101), an annular information recording area thereon, and an annular resin-based light-transmitting layer (102) thereon by which recording/reading laser beam is transmitted to the information recording area. The light-transmitting layer (102) terminates at a radially inner periphery which forms an annular raised rim (6). The rim is effective for protecting the light-transmitting layer from damages and dust adhesion, and when a plurality of such media are stacked, preventing the media from intimate contact.

摘要翻译： 光信息介质包括具有中心孔（101），其上的环形信息记录区域和在其上的环形树脂基透光层（102）的圆盘状基板（100），记录/读取激光束 传送到信息记录区。 透光层（102）终止在形成环形凸缘（6）的径向内周边。 该边缘对于保护透光层免受损伤和灰尘粘附是有效的，并且当堆叠多个这样的介质时，防止介质紧密接触。

公开(公告)号：US20050243676A1

公开(公告)日：2005-11-03

申请号：US10516701

申请日：2003-06-02

申请人： Tatsuya Kato ,  Hideki Hirata ,  Hiroyasu Inoue

发明人： Tatsuya Kato ,  Hideki Hirata ,  Hiroyasu Inoue

IPC分类号： G11B7/0045 ,  G11B7/125 ,  G11B7/24 ,  G11B7/243 ,  G11B3/00

CPC分类号： G11B7/1267 ,  G11B7/00456 ,  G11B7/2403 ,  G11B7/243 ,  G11B7/258

摘要： It is an object of the present invention to provide a method for determining a pattern for modulating the power of a laser beam which can determine a pattern for modulating the power of a laser beam so that data can be recorded in a write-once type optical recording medium with a laser beam having a low recording power at a high linear recording velocity. The method for determining a pattern for modulating the power of a laser beam according to the present invention includes the steps of determining pulse train patterns by fixing a recording power at a predetermined level and varying the level of a bottom power, modulating the power of the laser beam in accordance with the pulse train patterns to record first test signals in the optical recording medium, reproducing the first test signals, determining the optimum level of the bottom power based on the amplitude of the thus reproduced first test signals, determining pulse train patterns by fixing the bottom power at the optimum level and varying the level of the recording power, modulating the power of the laser beam in accordance with the pulse train patterns to record second test signals in the optical recording medium, reproducing the second test signals and determining the optimum level of the recording power based on at least one of jitter and error rates of the thus reproduced second test signals.

摘要翻译： 本发明的目的是提供一种用于确定用于调制激光束的功率的图案的方法，该方法可以确定用于调制激光束的功率的图案，使得数据可以以一次写入型光学 以高线性记录速度具有低记录功率的激光束的记录介质。 根据本发明的确定用于调制激光束的功率的图案的方法包括以下步骤：通过将记录功率固定在预定水平并改变底部功率的电平来调节脉冲串模式的功率 激光束根据脉冲序列图案在光学记录介质中记录第一测试信号，再现第一测试信号，基于这样再现的第一测试信号的幅度确定底部功率的最佳电平，确定脉冲串模式 通过将底部功率固定在最佳水平并改变记录功率的水平，根据脉冲串模式调制激光束的功率，以将第二测试信号记录在光学记录介质中，再现第二测试信号并确定 基于由此再现的抖动和错误率中的至少一个的记录功率的最佳电平 nd测试信号。

公开(公告)号：US20050207329A1

公开(公告)日：2005-09-22

申请号：US11017961

申请日：2004-12-22

申请人： Hiroshi Shingai ,  Shigeru Yamatsu ,  Hideki Hirata

发明人： Hiroshi Shingai ,  Shigeru Yamatsu ,  Hideki Hirata

IPC分类号： G11B7/24 ,  G11B7/243 ,  G11B7/254 ,  G11B7/257 ,  G11B7/26

CPC分类号： G11B7/24038 ,  G11B7/243 ,  G11B7/257 ,  G11B7/258 ,  G11B2007/24304 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25715

摘要： An optical recoding medium including a plurality of information layers laminated on a substrate 11 through an intermediate layer 12, at least one of the information layers other than the most distant information layer from a light incidence plane of a laser beam having a fourth dielectric film 31, a reflection film 32, a third dielectric film 33, a recording film 34, a second dielectric film 35, a first dielectric film 36 and a radiation film 37, and the fourth dielectric film 31 and the third dielectric film 33 containing zirconium oxide as a main component

摘要翻译： 一种光学记录介质，包括通过中间层12层压在基板11上的多个信息层，除了具有第四介电膜31的激光束的光入射面以外的最远的信息层以外的信息层中的至少一个 反射膜32，第三电介质膜33，记录膜34，第二电介质膜35，第一电介质膜36和放射线膜37以及含有氧化锆的第四电介质膜31和第三电介质膜33 一个主要组成部分

公开(公告)号：US20050152249A1

公开(公告)日：2005-07-14

申请号：US10512211

申请日：2003-04-23

申请人： Kazuo Fukunaga ,  Toshikazu Hosobuchi ,  Takashi Namioka ,  Yasufumi Takasugi ,  Giichi Shibuya ,  Hideki Hirata ,  Kazuki Suzawa ,  Tsutomu Kotani

发明人： Kazuo Fukunaga ,  Toshikazu Hosobuchi ,  Takashi Namioka ,  Yasufumi Takasugi ,  Giichi Shibuya ,  Hideki Hirata ,  Kazuki Suzawa ,  Tsutomu Kotani

IPC分类号： G11B7/00 ,  G11B7/004 ,  G11B17/04 ,  G11B19/12 ,  G11B5/58

CPC分类号： G11B19/12 ,  G11B17/04 ,  G11B2007/0006

摘要： It is an object of the present invention to provide an apparatus for discriminating an optical recording medium and a method for discriminating an optical recording medium which can reliably discriminate the kind of an optical recording medium even in the case where the optical recording medium to be discriminated is warped. The apparatus for discriminating an optical recording medium according to the present invention includes a first electrode 11, a second electrode 12, an alternating current signal generation circuit 13 for applying an alternating current signal A to the first electrode 11, a detection circuit 14 for detecting the level of an alternating current signal B appearing at the second electrode 12, a supporting mechanism 16 for supporting the first electrode 11 and the second electrode 12, a driving mechanism 17 for vertically moving the supporting mechanism 16, and a control circuit 15 for controlling the operations of the alternating current signal generation circuit 13 and the detection circuit 14 and the driving mechanism 17.

摘要翻译： 本发明的一个目的是提供一种鉴别光学记录介质的装置和一种鉴别光记录介质的方法，该光记录介质即使在待鉴别的光记录介质的情况下也可以可靠地区分光记录介质的种类 扭曲。 根据本发明的用于识别光学记录介质的装置包括：第一电极11，第二电极12，用于向第一电极11施加交流信号A的交流信号产生电路13;检测电路14 出现在第二电极12处的交流信号B的电平，用于支撑第一电极11和第二电极12的支撑机构16，用于垂直移动支撑机构16的驱动机构17和用于控制的控制电路15 交流信号发生电路13和检测电路14以及驱动机构17的动作。

公开(公告)号：US06844045B2

公开(公告)日：2005-01-18

申请号：US10645536

申请日：2003-08-22

申请人： Tsuyoshi Komaki ,  Hideki Hirata ,  Tomoki Ushida ,  Mamoru Usami

发明人： Tsuyoshi Komaki ,  Hideki Hirata ,  Tomoki Ushida ,  Mamoru Usami

IPC分类号： G11B7/254 ,  G11B7/26 ,  B32B3/02

CPC分类号： G11B7/266 ,  G11B7/24 ,  G11B7/2534 ,  G11B7/254 ,  G11B7/2542 ,  G11B7/2585 ,  G11B7/26 ,  Y10T428/21

摘要： A method is provided for preparing an optical information medium comprising a disk-shaped supporting substrate having a center hole, an annular information recording area thereon, and an annular resin-based light-transmitting layer on the information recording area through which recording/reading laser beam is transmitted. In the formation of the light-transmitting layer, a coating fluid containing an actinic radiation-curable resin is fed onto the supporting substrate having the information-recording area formed thereon and the supporting substrate is rotated for spreading the coating fluid over the supporting substrate to thereby form a resin layer, and subsequently, the resin layer is irradiated with actinic radiation to thereby cure said resin layer while reducing the rotation speed of the supporting substrate. This method is capable of suppressing the size of the bump formed in the outer peripheral region of the light-transmitting layer.

摘要翻译： 提供了一种用于制备光学信息介质的方法，所述光学信息介质包括具有中心孔的盘形支撑基板，其上的环形信息记录区域和信息记录区域上的环形树脂基透光层，记录/读取激光器 光束被传输。 在透光层的形成中，将含有光化性辐射固化树脂的涂布液供给到其上形成有信息记录区域的支撑基板上，并且支撑基板旋转以将涂布流体涂覆在支撑基板上， 从而形成树脂层，然后用光化辐射照射树脂层，从而固化所述树脂层，同时降低支撑基板的旋转速度。 该方法能够抑制在透光层的外周区域中形成的凸块的尺寸。