公开(公告)号：US6087067A

公开(公告)日：2000-07-11

申请号：US55873

申请日：1998-04-07

申请人： Tatsuya Kato ,  Hajime Utsunomiya ,  Tsuyoshi Komaki ,  Hideki Hirata

发明人： Tatsuya Kato ,  Hajime Utsunomiya ,  Tsuyoshi Komaki ,  Hideki Hirata

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

CPC分类号： G11B7/257 ,  G11B7/24 ,  G11B7/2542 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/2571 ,  G11B2007/25715 ,  G11B2007/25716 ,  G11B7/252 ,  G11B7/2534 ,  G11B7/256 ,  Y10S430/146

摘要： An optical recording medium of phase change type, and in particular, a dual side medium prepared by adhering two single side media is provided. In this medium, deformation of record marks generated in the overwriting due to difference in light absorption between the record marks and the region other than the record marks is prevented by providing a reflective layer of high light transmission, and increase in jitter and failure of track servo and focus servo caused by uneven coating of the adhesive layer and the resin protective layer are prevented. The optical recording medium comprises a substrate, a recording layer of phase change type on the surface side of the substrate, and a reflective layer and a light absorption layer disposed in this order on the surface side of the recording layer. The light absorption layer has a light transmission of 85% or higher in wavelength range S (wavelength in the range of 400 to 450 nm), up to 55% at the recording/reproducing wavelength, and 80% or higher in wavelength range L (wavelength in the range of 800 to 830 nm).

摘要翻译： 提供了相变型的光记录介质，特别是提供了通过粘附两个单面介质制备的双面介质。 在该介质中，由于记录标记与记录标记之外的区域之间的光吸收差异而在重写中产生的记录标记的变形通过提供高光传输的反射层而被防止，并且增加了轨迹的抖动和故障 防止了粘合剂层和树脂保护层的不均匀涂覆引起的伺服和聚焦伺服。 光记录介质包括基板，基板的表面侧的相变型记录层，以及依次设置在记录层的表面侧的反射层和光吸收层。 光吸收层的波长范围S（波长在400〜450nm）的光透射率高达85％以上，记录/再生波长为55％以下，波长范围为80％以上 波长在800至830nm的范围内）。

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：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：US20080239934A1

公开(公告)日：2008-10-02

申请号：US12076070

申请日：2008-03-13

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

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

IPC分类号： G11B7/24

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由包含Sb，Ge和Sb的相变材料Sb x Sub x Z z形成的记录膜;以及 在x：y：z的原子比中，其中5 <= y <= 15且4 <= z <= 15。 如果满足x + y + z + a = 100和4 <= a <= 15，则记录膜还包括原子比a的Te。 提供由厚度为2nm以上且10nm以下的ZrO 2·2L 2 O 3·3膜形成的界面层 在记录膜的激光束入射侧。 当ZrO 2→2→2→3 <3>膜的组成比由ZrO 2：Cr： B = C（摩尔％），20 <= B <= 90，10 <= C <= 80，B + C = 100。

公开(公告)号：US20080175125A1

公开(公告)日：2008-07-24

申请号：US12010163

申请日：2008-01-22

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

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

IPC分类号： G11B3/74

CPC分类号： G11B7/24038 ,  G11B7/2433 ,  G11B7/2578 ,  G11B7/259 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25715 ,  Y10T428/21

摘要： A next-generation optical recording medium has two or more information layers which include a translucent information layer. The translucent information layer has a recording film and an interface layer, provided adjacent to the recording film on the side of the light incident surface. The recording film is made of a phase change material having SbxTeyGez elements and elemental ratios. Y satisfies 5≦y≦15 and z satisfies 5≦z≦15. When In having an elemental ratio of a is further added and x+y+z+a=100 holds, a satisfies 4≦a≦15. The interface layer comprises of ZrO2—Cr2O3 film thickness of which is in a range of from 2 nm to 10 nm. When ZrO2:Cr2O3═C:D (mol %), the compositional ratios ZrO2 and Cr2O3 in the ZrO2—Cr2O3 film, holds, the C satisfies 20≦C≦90, and the D satisfies 10≦D≦80, and the C and the D satisfy C+D=100. The ZrO2 is stabilized ZrO2 which contains Y2O3, when ZrO2:Y2O3=(100-X):X (mol %), the compositional ratios ZrO2 and Y2O3 in the stabilized ZrO2, holds, the X satisfies 2≦X≦10.

摘要翻译： 下一代光记录介质具有包括半透明信息层的两个或多个信息层。 半透明信息层具有记录膜和界面层，与光入射表面侧的记录膜相邻。 该记录膜由具有Sb x Si x Y y z z z元素和元素比的相变材料制成。 Y满足5 <= y <= 15，z满足5 <= z <= 15。 当进一步添加具有a的元素比率的In并且x + y + z + a = 100成立时，满足4 <= a <= 15。 界面层包含ZrO 2→2→2→3→3→3膜，其膜厚在2nm至10nm的范围内。 当ZrO 2：Cr 2 O 3 -C（D）（摩尔％）时，组成比ZrO 2 < 和ZrO 2 -r 2 O 3 O 3膜中的Cr 2 O 3 O 3 满足20 <= C <= 90，D满足10 <= D <= 80，C和D满足C + D = 100。 当ZrO 2 2时，ZrO 2 2是稳定的含有Y 2 O 3 O 3的ZrO 2 （100-X）：X（摩尔％），组成比ZrO 2和Y _{2 3 <3>，X满足2 <= X <= 10。}

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：US20080310279A1

公开(公告)日：2008-12-18

申请号：US12155972

申请日：2008-06-12

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

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

IPC分类号： G11B3/74 ,  G11B7/00

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：US20050219984A1

公开(公告)日：2005-10-06

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： G11B7/0045 ,  G11B7/125 ,  G11B7/24038 ,  G11B7/243 ,  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：US06403193B1

公开(公告)日：2002-06-11

申请号：US09531446

申请日：2000-03-20

申请人： Hiroshi Shingai ,  Hideki Hirata ,  Tatsuya Kato

发明人： Hiroshi Shingai ,  Hideki Hirata ,  Tatsuya Kato

IPC分类号： B32B302

CPC分类号： G11B7/258 ,  G11B7/00718 ,  G11B7/24035 ,  G11B7/243 ,  G11B7/2534 ,  G11B7/259 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24314 ,  G11B2007/24316 ,  Y10T428/21

摘要： An optical recording medium of the invention comprises a phase change type recording layer on a surface of a substrate with reading light incident on the recording layer through the substrate, and a dielectric layer provided in contact with the recording layer and on a side of the recording layer on which the reading light is incident. The substrate has a groove acting as a guide groove and a land between adjacent grooves so that the groove and land are used as recording tracks. The phase change type recording layer contains Ag, In, Sb and Te as main components, and has a thickness tR defined by tR≦&lgr;p/20 where &lgr;p is a wavelength of the reading light. The dielectric layer has a thickness td1 that is represented in terms of an optical path length at the wavelength &lgr;p and defined by &lgr;p/2≦td1.

摘要翻译： 本发明的光记录介质包括在基板的表面上的相变型记录层，其中读取光通过基板入射在记录层上，并且介电层设置成与记录层接触并在记录侧 阅读灯入射的层。 基板具有用作引导槽的沟槽和相邻槽之间的焊盘，使得沟槽和焊盘用作记录轨道。 相变型记录层包含Ag，In，Sb和Te作为主要成分，其厚度tR由tR <= lambdp / 20定义，其中lambdp是读取光的波长。 电介质层的厚度td1以波长lambdp的光程长度表示，并由lambdp / 2 <= td1定义。

公开(公告)号：US07960006B2

公开(公告)日：2011-06-14

申请号：US12010163

申请日：2008-01-22

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

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

IPC分类号： B32B3/02

CPC分类号： G11B7/24038 ,  G11B7/2433 ,  G11B7/2578 ,  G11B7/259 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316 ,  G11B2007/25706 ,  G11B2007/25715 ,  Y10T428/21

摘要： A next-generation optical recording medium has two or more information layers which include a translucent information layer. The translucent information layer has a recording film and an interface layer, provided adjacent to the recording film on the side of the light incident surface. The recording film is made of a phase change material having SbxTeyGez elements and elemental ratios. Y satisfies 5≦y≦15 and z satisfies 5≦z≦15. When In having an elemental ratio of a is further added and x+y+z+a=100 holds, a satisfies 4≦a≦15. The interface layer comprises of ZrO2—Cr2O3 film thickness of which is in a range of from 2 nm to 10 nm. When ZrO2:Cr2O3═C:D (mol %), the compositional ratios ZrO2 and Cr2O3 in the ZrO2—Cr2O3 film, holds, the C satisfies 20≦C≦90, and the D satisfies 10≦D≦80, and the C and the D satisfy C+D=100. The ZrO2 is stabilized ZrO2 which contains Y2O3, when ZrO2:Y2O3=(100−X):X (mol %), the compositional ratios ZrO2 and Y2O3 in the stabilized ZrO2, holds, the X satisfies 2≦X≦10.

摘要翻译： 下一代光记录介质具有包括半透明信息层的两个或多个信息层。 半透明信息层具有记录膜和界面层，与光入射表面侧的记录膜相邻。 记录膜由具有SbxTeeyGez元素和元素比的相变材料制成。 Y满足5＆nlE; y＆nlE; 15和z满足5＆nlE; z＆nlE; 15。 当进一步添加具有a的元素比率的In并且x + y + z + a = 100成立时，a满足4＆nlE; a＆nlE; 15。 界面层由ZrO 2 -Cr 2 O 3膜厚度在2nm至10nm的范围内。 当ZrO 2：Cr 2 O 3 = C：D（摩尔％）时，ZrO 2 -Cr 2 O 3膜中的ZrO 2和Cr 2 O 3的组成比保持为C，满足20＆nlE; C＆nlE; 90，D满足10＆nlE; D＆nlE; 80，C D满足C + D = 100。 当ZrO 2：Y 2 O 3 =（100-X）：X（摩尔％）时，ZrO 2为稳定的含有Y 2 O 3的ZrO 2，稳定的ZrO 2中的ZrO 2和Y 2 O 3的组成比例成立，X满足2＆nlE; X＆nlE; 10。