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：US07197005B2

公开(公告)日：2007-03-27

申请号：US09971704

申请日：2001-10-09

申请人： Tatsuya Kato ,  Hideki Hirata ,  Hajime Utsunomiya ,  Hiroyasu Inoue

发明人： Tatsuya Kato ,  Hideki Hirata ,  Hajime Utsunomiya ,  Hiroyasu Inoue

IPC分类号： G11B7/24

CPC分类号： G11B7/24079 ,  G11B7/00454 ,  G11B7/006 ,  G11B7/00718 ,  G11B7/243 ,  G11B7/256 ,  G11B7/2578 ,  G11B7/258 ,  G11B2007/2431 ,  G11B2007/24312 ,  G11B2007/24314 ,  G11B2007/24316

摘要： In an optical recording medium including a grooved light-transparent substrate, a phase change recording layer, a dielectric layer and a reflective layer, recording is carried out by irradiating a laser beam to the recording layer through an objective lens in an optical system. The recording is carried out in a groove recording mode under the conditions: 0.48≦PT/(λ/NA)≦0.74, and PT≦0.50 μm wherein λ is a laser beam wavelength, NA is an objective lens numerical aperture, and PT is a track pitch, thereby forming a recorded mark having opposite ends extending out of the groove. This enables high density recording and increases the data transfer rate of a phase change optical recording medium.

摘要翻译： 在包括带槽的光透明基板，相变记录层，电介质层和反射层的光记录介质中，通过光学系统中的物镜将激光束照射到记录层来进行记录。 在凹槽记录模式下，在0.48≤P /（λ/ NA）<= 0.74和P <=0.50μm的条件下进行记录 其中λ是激光束波长，NA是物镜数值孔径，并且P T T是轨道间距，从而形成具有相对端延伸出凹槽的记录标记。 这使得能够进行高密度记录并增加相变光学记录介质的数据传送速率。

公开(公告)号：US07177254B2

公开(公告)日：2007-02-13

申请号：US10109594

申请日：2002-03-27

申请人： Tatsuya Kato ,  Hajime Utsunomiya ,  Hideki Hirata

发明人： Tatsuya Kato ,  Hajime Utsunomiya ,  Hideki Hirata

IPC分类号： G11B7/0045 ,  G11B20/10 ,  G11B7/00

CPC分类号： G11B7/0062 ,  G11B20/10

摘要： An optical recording method that performs recording by irradiating optical recording media with laser beam modulated in intensity based on a write waveform is provided. The write waveform has a plurality of write pulse blocks for forming write marks, and each write pulse block has at least one type of upward pulse. In the event that the width of said upward pulse is so narrow that the laser beam intensity corresponding to the peak intensity of that upward pulse cannot be obtained, the peak intensity of that upward pulse is increased so that, in said laser beam, the beam intensity it should have or a value close thereto is obtained. Thereby, good recording and playback characteristics can be obtained even when recording at a high transfer rate.

摘要翻译： 提供了一种通过基于写入波形以强度激光束照射光学记录介质进行记录的光学记录方法。 写入波形具有用于形成写入标记的多个写入脉冲块，并且每个写入脉冲块具有至少一种类型的向上的脉冲。 在所述上升脉冲的宽度如此窄使得不能获得与该向上脉冲的峰值强度对应的激光束强度的情况下，该向上脉冲的峰值强度增加，使得在所述激光束中， 获得其应具有的强度或接近其值。 因此，即使以高传送速度进行记录，也可以获得良好的记录和播放特性。

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：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：US20080165642A1

公开(公告)日：2008-07-10

申请号：US12003582

申请日：2007-12-28

申请人： Tatsuya Kato ,  Yasuhiro Takagi ,  Hideki Hirata ,  Hajime Utsunomiya

发明人： Tatsuya Kato ,  Yasuhiro Takagi ,  Hideki Hirata ,  Hajime Utsunomiya

IPC分类号： G11B20/00

CPC分类号： G11B20/10009 ,  G11B7/268 ,  G11B20/10481

摘要： In an evaluation device and an evaluation system, the level of base power is set higher than that in an optimal recording condition at a set room temperature and lower than the level of bias power. In particular, the level of the base power is set so that the jitter value of a recording mark and a blank, which is formed in a required high temperature environment, during reproduction in the high temperature environment becomes minimum. By evaluating the recording characteristic of a recording mark and a blank formed by irradiation of recording laser light in the form of a pulse train, the recording characteristic of an optical recording medium in high-speed recording in high temperature environment is evaluated.

摘要翻译： 在评价装置和评价系统中，将基本功率的电平设定为高于设定的室温下的最佳记录条件，并且低于偏置功率的电平。 特别地，基本功率的电平被设置为使得在高温环境中的再现期间在所需高温环境中形成的记录标记和空白的抖动值变得最小。 通过评价通过以脉冲串的形式记录激光形成的记录标记和空白的记录特性，评估在高温环境中的高速记录中的光记录介质的记录特性。

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。

公开(公告)号：US07224663B2

公开(公告)日：2007-05-29

申请号：US10489118

申请日：2002-09-05

申请人： Tatsuya Kato ,  Hiroshi Shingai ,  Hideki Hirata

发明人： Tatsuya Kato ,  Hiroshi Shingai ,  Hideki Hirata

IPC分类号： G11B7/24 ,  G11B5/09

CPC分类号： G11B7/126 ,  G11B7/00 ,  G11B7/0045 ,  G11B7/0062

摘要： It is an object of the present invention to provide a method of recording information to an optical recording medium that is suited to achieving high data transfer rates.The optical recording medium according to the present invention comprises a method of recording information to an optical recording medium where information is recorded by forming a plurality of recording marks selected from a group consisting of several types of recording marks each with different lengths, wherein: the cooling interval when forming the shortest recording mark contained within said group is set shorter than the cooling interval when forming the other recording marks contained in the group. Thus, even in the case that one clock period (T) is shortened to achieve high transfer rates, a high erase efficiency can be maintained when overwriting data.

摘要翻译： 本发明的目的是提供一种将信息记录到适于实现高数据传输速率的光记录介质上的方法。 根据本发明的光记录介质包括一种通过形成从由具有不同长度的几种类型的记录标记组成的组中形成的多个记录标记来记录信息到光记录介质的方法，其中： 当形成包含在该组中的最短记录标记时的冷却间隔被设定为比形成组中包含的其它记录标记时的冷却间隔短。 因此，即使在一个时钟周期（T）被缩短以实现高传输速率的情况下，当重写数据时也可以保持高的擦除效率。

公开(公告)号：US07082090B2

公开(公告)日：2006-07-25

申请号：US10488981

申请日：2002-09-05

申请人： Tatsuya Kato ,  Hiroshi Shingai ,  Hideki Hirata

发明人： Tatsuya Kato ,  Hiroshi Shingai ,  Hideki Hirata

IPC分类号： G11B5/09 ,  G11B7/00

CPC分类号： G11B7/0062

摘要： It is an object of the present invention to provide a method of recording information to an optical recording medium that is suited to achieving high data transfer rates.The optical recording medium according to the present invention comprises a method of recording information to an optical recording medium where information is recorded by forming on the optical recording medium a plurality of recording marks selected from a group consisting of several types of recording marks with different lengths each corresponding to n times (n is a natural number) the clock frequency T, wherein: taking Tr to be the transition time required for a laser beam to rise and Tf to be the transition time required for the laser beam to fall, said recording marks are formed using a laser beam made up of a number of pulses given by nT/(Tr+Tf) or less. Thus, even in the case that one clock period (T) is extremely short, the power level of the laser beam can reliably reach the maximum value (Pw) and minimum value (Pb), so it is possible to form recording marks with a good shape.

摘要翻译： 本发明的目的是提供一种将信息记录到适于实现高数据传输速率的光记录介质上的方法。 根据本发明的光记录介质包括一种通过在光记录介质上形成从具有不同长度的几种记录标记组成的组中选择的多个记录标记来记录信息到光记录介质的方法 每个对应于时钟频率T的n次（n是自然数），其中：使T 为激光束上升所需的转换时间，并且T < >为激光束下降所需的转换时间，所述记录标记使用由nT /（T T + T T）给出的多个脉冲构成的激光束形成 ）以下。 因此，即使在一个时钟周期（T）非常短的情况下，激光束的功率电平可以可靠地达到最大值（P SUB）和最小值（P＆lt; B＆gt; b） ），因此可以形成具有良好形状的记录标记。