公开(公告)号：US20050083819A1

公开(公告)日：2005-04-21

申请号：US10501435

申请日：2003-01-10

申请人： Tatsuya Kato ,  Hiroshi Shingai ,  Hideki Hirata

发明人： Tatsuya Kato ,  Hiroshi Shingai ,  Hideki Hirata

IPC分类号： G11B7/0045 ,  G11B7/006 ,  G11B7/125 ,  G11B5/09

CPC分类号： G11B7/0062 ,  G11B7/00456

摘要： The present invention relates to a method of recording information to an optical recording medium that can reduce the influence from heat caused when neighboring recording marks are formed and can prevent cross-talk and cross-erase of information. According to the present invention, when forming recording marks in the optical recording medium by projecting a pulse-modulated laser beam thereonto, since the recording powers of a top pulse and a last pulse are set to Pw2 lower than the recording power Pw1 of any of intermediate pulses-and the width Tcl of a cooling pulse is set to be equal to or wider than 1.0 T wider than the width of a pulse of the recording power, it is possible to improve cooling efficiency when recording marks are formed, thereby decreasing thermal interference between recording marks and achieve high density recording and high data transfer rate.

摘要翻译： 本发明涉及一种将信息记录到光学记录介质上的方法，该方法可以减少在相邻记录标记形成时引起的热量的影响，并且可以防止信息的串扰和交叉擦除。 根据本发明，当通过在其上投射脉冲调制的激光束来在光学记录介质中形成记录标记时，由于顶部脉冲和最后一个脉冲的记录功率被设置为比记录功率Pw 1低 冷却脉冲的中间脉冲和宽度T cl中的任何一个被设置为等于或大于记录功率的脉冲宽度的1.0T，可以改善冷却 形成记录标记时的效率，从而降低记录标记之间的热干扰并实现高密度记录和高数据传输速率。

公开(公告)号：US20050063273A1

公开(公告)日：2005-03-24

申请号：US10927539

申请日：2004-08-26

申请人： Hiroshi Shingai ,  Tatsuya Kato ,  Hideki Hirata

发明人： Hiroshi Shingai ,  Tatsuya Kato ,  Hideki Hirata

IPC分类号： G11B7/0045 ,  G11B5/09 ,  G11B7/006 ,  G11B7/125

CPC分类号： G11B7/126 ,  G11B7/0062

摘要： A method for recording data in an optical recording disc including a substrate and a recording layer formed on the substrate and containing a phase change material as a primary component is constituted so that data can be recorded therein and data recorded therein can be erased by projecting thereonto at a high linear velocity equal to or higher than a predetermined linear velocity a laser beam whose power is modulated in accordance with a pulse train pattern including a plurality of kinds of unit pulse train patterns each having at least recording pulses whose levels are set to a recording power and bottom pulses whose levels are set to a bottom power onto the recording layer and forming a plurality of recording marks having different lengths in the recording layer, wherein among the plurality of kinds of unit pulse train patterns used for forming recording marks having different lengths those other than the unit pulse train pattern used for forming the shortest recording mark are determined so that they include recording pulses in a number corresponding to the length of the recording mark to be formed, that corresponding recording pulses included therein have a common pulse width and that each of them includes a bottom pulse whose pulse width is determined in accordance with the length of the recording mark to be formed at the end thereof. According to this method for recording data in an optical recording disc, it is possible to reduce jitter of a reproduced signal even when data are recorded at a low linear recording velocity in the recording layer designed to be suitable for recording data therein at a high linear recording velocity.

摘要翻译： 在包括形成在基板上并包含相变材料作为主要部件的基板和记录层的光记录盘中记录数据的方法被构成为能够记录数据并且可以通过在其上投影记录来擦除其中记录的数据 在等于或高于预定线速度的高线速度下，其功率根据包括多个单位脉冲序列的脉冲序列模式进行调制的激光束，每个单位脉冲串模式至少具有将其电平设置为 记录功率和底部脉冲，其电平被设置为记录层上的底部功率并且在记录层中形成具有不同长度的多个记录标记，其中在用于形成具有不同的记录标记的记录标记的多种单位脉冲串模式中 长度除了用于形成最短记录标记的单位脉冲串图案以外的那些 使得它们包括与要形成的记录标记的长度相对应的数字的记录脉冲，其中包括的相应记录脉冲具有公共脉冲宽度，并且它们中的每一个包括其脉冲宽度根据 要在其末端形成的记录标记的长度。 根据用于在光学记录盘中记录数据的方法，即使当数据以低线性记录速度记录在设计成适合于以高线性记录数据的记录层中的记录层时，也可以减少再现信号的抖动 记录速度。

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：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：US07525891B2

公开(公告)日：2009-04-28

申请号：US10516424

申请日：2003-06-02

申请人： Tatsuya Kato ,  Hideki Hirata

发明人： Tatsuya Kato ,  Hideki Hirata

IPC分类号： G11B5/09

CPC分类号： G11B7/0045 ,  G11B7/00456 ,  G11B7/1267 ,  G11B7/24 ,  G11B7/24038

摘要： It is an object of the present invention to provide a method for recording data in an optical recording medium which can record data in a write-once type optical recording medium at a high linear recording velocity using a laser beam having a low recording power. The method for recording data in an optical recording medium according to the present invention is constituted so that when data are to be recorded in an optical recording medium including a substrate, a first recording layer and a second recording layer by projecting a laser beam whose power is modulated in accordance with a pulse train pattern including pulses whose levels are set to levels corresponding to a recording power Pw and a bottom power Pb onto the optical recording medium and forming a recording mark at a predetermined region of the first recording layer and the second recording layer, as a linear recording velocity increases, the power of the laser beam is modulated using a pulse train pattern including a smaller number of pulses whose level is set to a level to the recording power Pw, thereby forming a recording mark. According to the present invention, since the power of a laser beam is modulated using a pulse train pattern including a smaller number of pulses whose level is set to a level to the recording power Pw as a linear recording velocity increases, it is possible to record data in an optical recording medium using a laser beam having a low recording power even when a linear recording velocity is high and on the other hand, it is possible to prevent cross-talk of data from increasing even when a linear recording velocity is low. Therefore, it is possible to employ a semiconductor laser having a relatively low output even when data are recorded at a high linear recording velocity.

摘要翻译： 本发明的目的是提供一种在光记录介质中记录数据的方法，该方法可以使用具有低记录功率的激光束以高线性记录速度在一次写入型光记录介质中记录数据。 根据本发明的用于在光学记录介质中记录数据的方法被构造成使得当数据要被记录在包括基板，第一记录层和第二记录层的光学记录介质中时，通过投射激光 根据脉冲序列模式进行调制，脉冲串模式包括其电平被设置为对应于光学记录介质上的记录功率Pw和底部功率Pb的电平，并在第一记录层的预定区域形成记录标记， 记录层，随着线性记录速度的增加，激光束的功率使用脉冲序列模式进行调制，该脉冲串模式包括较小数量的脉冲，其电平被设置为与记录功率Pw的水平，从而形成记录标记。 根据本发明，由于线性记录速度增加​​，使用脉冲序列调制激光束的功率，该脉冲串模式包括其电平被设置为与记录功率Pw相关的水平的较小数量的脉冲，因此可以记录 即使线性记录速度高，也使用具有低记录功率的激光束的光记录介质中的数据，另一方面，即使线性记录速度低，也可以防止数据串扰增加。 因此，即使当以高线性记录速度记录数据时，也可以采用具有相对较低输出的半导体激光器。

公开(公告)号：US07443775B2

公开(公告)日：2008-10-28

申请号：US10514623

申请日：2003-05-19

申请人： Tatsuya Kato ,  Hideki Hirata

发明人： Tatsuya Kato ,  Hideki Hirata

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B7/24 ,  G11B7/24038 ,  G11B7/2433 ,  G11B2007/0013 ,  G11B2007/24304 ,  G11B2007/24312

摘要： It is an object of the present invention to provide a method for recording data in an optical recording medium which can form a recording mark having desired length and width in a write-once type optical recording medium. The method for recording data in an optical recording medium according to the present invention is constituted so as to project a laser beam whose power is modulated by a pulse train pattern onto an optical recording medium including a substrate, a first recording layer, a second recording layer and a light transmission layer 16 wherein a recording pulse of the pulse train pattern is divided into (n−1) divided pulses and the power of the laser beam is set to a recording power Pw at the peak of each of the divided pulses, set to a second bottom power Pb2 at a portion immediately after a last divided pulse and set to a first bottom power Pb1 at other intervals where Pb1 is higher than Pb2.

摘要翻译： 本发明的目的是提供一种用于在光记录介质中记录数据的方法，该光记录介质可以在一次写入型光记录介质中形成具有所需长度和宽度的记录标记。 根据本发明的用于在光学记录介质中记录数据的方法被构成为将其功率由脉冲串图案调制的激光束投射到包括基板，第一记录层，第二记录 层和光传输层16，其中脉冲序列图案的记录脉冲被划分为（n-1）个分割脉冲，并且激光束的功率被设置为每个分割脉冲的峰值处的记录功率Pw， 在最后一个分割脉冲之后的一部分处设置为第二底部功率Pb 2，并且在Pb 1高于Pb 2的其它间隔处设定为第一底部功率Pb 1。

公开(公告)号：US20050063272A1

公开(公告)日：2005-03-24

申请号：US10926789

申请日：2004-08-26

申请人： Hiroshi Shingai ,  Tatsuya Kato ,  Hideki Hirata

发明人： Hiroshi Shingai ,  Tatsuya Kato ,  Hideki Hirata

IPC分类号： G11B7/0045 ,  G11B5/09 ,  G11B7/006 ,  G11B7/125 ,  G11B7/243 ,  G11B7/258

CPC分类号： G11B7/243 ,  G11B7/0062 ,  G11B7/257 ,  G11B7/258 ,  G11B7/259 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316

摘要： A method for recording data in an optical recording disc including a substrate and a recording layer formed on the substrate and containing a phase change material as a primary component is constituted so that data can be recorded therein and data recorded therein can be erased by projecting a laser beam thereonto at a high linear velocity equal to or higher than a predetermined linear velocity by a laser beam whose power is modulated in accordance with a pulse train pattern including a unit pulse train pattern having at least recording pulses whose levels are set to a recording power and bottom pulses whose levels are set to a bottom power onto the recording layer and forming at least one recording mark in the recording layer, wherein the unit pulse train pattern for forming one recording mark includes after a last recording pulse included therein a bottom pulse whose pulse width is determined in accordance with a width of the last pulse included therein. According to this method for recording data in an optical recording disc, it, is possible to reduce jitter of a reproduced signal even when data are recorded at a low linear recording velocity in the recording layer designed to be suitable for recording data therein at a high linear recording velocity.

摘要翻译： 在包括形成在基板上并且包含相变材料作为主要部件的基板和记录层的光记录盘中记录数据的方法被构成为可以将数据记录在其中并且可以通过将数据记录在其中来记录数据 激光束以等于或高于预定线速度的高线速度被激光束照射，该激光束的功率根据包括具有至少记录脉冲的单位脉冲串图案的脉冲序列模式被调制，其级别被设置为记录 功率和底部脉冲，其电平被设置为记录层上的底部功率并且在记录层中形成至少一个记录标记，其中用于形成一个记录标记的单位脉冲串图案包括在最后一个记录脉冲之后包括底部脉冲 其脉冲宽度根据其中包括的最后脉冲的宽度来确定。 根据用于在光学记录盘中记录数据的这种方法，即使当记录层中以低线性记录速度记录数据时，也可以减少再现信号的抖动，该记录层被设计为适于在高记录数据中记录数据 线性记录速度。

公开(公告)号：US06667952B2

公开(公告)日：2003-12-23

申请号：US09887434

申请日：2001-06-25

申请人： Tsuyoshi Komaki ,  Hideki Hirata ,  Tatsuya Kato

发明人： Tsuyoshi Komaki ,  Hideki Hirata ,  Tatsuya Kato

IPC分类号： G11B724

CPC分类号： G11B7/2542 ,  G11B7/24056 ,  G11B7/24067 ,  G11B7/2534 ,  G11B7/256 ,  G11B7/2585 ,  G11B7/26 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25708 ,  G11B2007/2571 ,  G11B2007/25715 ,  G11B2007/25716

摘要： In an optical information medium comprising a supporting substrate, an information recording layer thereon, and a light-transmitting layer wherein a recording/reading laser beam enters the recording layer through the light-transmitting layer, the light-transmitting layer is formed of a resin and has a tensile strength at break of 5-40 MPa, a tensile elongation at break of 15-100%, and a tensile modulus of 40≧1,000 MPa. The medium has improved recording/reading characteristics when a laser beam defines a beam spot having a small diameter of up to 300 &mgr;m and the medium is rotated at a high linear velocity of at least 8 m/s.

摘要翻译： 在包括支撑基板，其上的信息记录层和透光层的光学信息介质中，其中记录/读取激光束通过透光层进入记录层，透光层由树脂形成 并且断裂拉伸强度为5-40MPa，断裂拉伸伸长率为15-100％，拉伸模量为40> = 1000MPa。 当激光束限定具有高达300μm的小直径的束斑并且介质以至少8m / s的高线速度旋转时，介质具有改善的记录/读取特性。

公开(公告)号：US07943223B2

公开(公告)日：2011-05-17

申请号：US12076070

申请日：2008-03-13

申请人： Hiroshi Shingai ,  Tatsuya Kato ,  Masanori Kosuda ,  Hiroshi Takasaki ,  Hideki Hirata ,  Jajime Utsunomiya

发明人： Hiroshi Shingai ,  Tatsuya Kato ,  Masanori Kosuda ,  Hiroshi Takasaki ,  Hideki Hirata ,  Jajime Utsunomiya

IPC分类号： B32B3/02

CPC分类号： G11B7/2433 ,  G11B7/24038 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/25706 ,  G11B2007/25715 ,  Y10T428/21

摘要： An optical recording medium is provided which includes two or more information layers in which an Sb-based eutectic material is used as the material for a recording film of a translucent information layer. There is also provided a recording film material for the optical recording medium. The translucent information layer is configured to include a recording film formed of a phase change material SbxGeyInz containing Sb, Ge, and In in an atomic ratio of x:y:z, where 5≦y≦15 and 4≦z≦15 are satisfied. The recording film further includes Te in an atomic ratio of a, provided that x+y+z+a=100 and 4≦a≦15 are satisfied. An interface layer formed of a ZrO2—Cr2O3 film having a thickness of 2 nm or more and 10 nm or less is provided on the laser beam incident side of the recording film. When the compositional ratio of the ZrO2—Cr2O3 film is given by ZrO2:Cr2O3=B:C (mol %), 20≦B≦90, 10≦C≦80, and B+C=100 are satisfied.

摘要翻译： 提供了一种光记录介质，其包括其中使用Sb基共晶材料作为半透明信息层的记录膜的材料的两个或更多个信息层。 还提供了一种用于光学记录介质的记录膜材料。 半透明信息层被配置为包括以包含Sb，Ge和In的相变材料SbxGeyInz形成的记录膜，其原子比为x：y：z，其中满足5＆lt; 1; y＆nlE; 15和4＆nlE; z＆nlE; 15 。 如果满足x + y + z + a = 100和4＆nlE; a＆nlE; 15，记录膜还包括原子比α的Te。 在记录膜的激光入射侧设置由厚度为2nm以上且10nm以下的ZrO 2 -Cr 2 O 3膜形成的界面层。 当ZrO 2 -Cr 2 O 3膜的组成比由ZrO 2：Cr 2 O 3 = B:C（摩尔％）给出时，满足20＆lt; NlE; B＆NlE; 90,10＆amp; NlE; C＆NlE; 80和B + C = 100。

公开(公告)号：US07254101B2

公开(公告)日：2007-08-07

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： G11B15/52

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。