公开(公告)号：US07742374B2

公开(公告)日：2010-06-22

申请号：US11167291

申请日：2005-06-28

申请人： Tetsuro Mizushima ,  Tatsuya Kato ,  Hiroshi Shingai ,  Hideaki Miura ,  Jiro Yoshinari

发明人： Tetsuro Mizushima ,  Tatsuya Kato ,  Hiroshi Shingai ,  Hideaki Miura ,  Jiro Yoshinari

IPC分类号： G11B7/00

CPC分类号： G11B7/00456 ,  G11B2007/0013

摘要： A method of recording data on a double-layer optical recording medium having a recording layer with high light transmittance is provided. A laser beam is modulated to emit a pulse series of laser including a write pulse of a write power and a cooling pulse of a bottom power, so as to encode and write data to be recorded as recording marks of a length nT along a track of the recording layer, where n is an integer and T is one clock cycle. An nT recording mark is formed using (n−1) write pulse(s), and when forming a recording mark of 4 T or longer, a cooling pulse with a pulse width of 0.8 T to 2 T is inserted before the last write pulse. Recording marks are thereby accurately formed without heat interference between consecutive recording marks and cross erase between recording marks of adjacent tracks.

摘要翻译： 提供了一种在具有高透光性的记录层的双层光学记录介质上记录数据的方法。 激光束被调制以发射包括写入功率的写入脉冲和底部功率的冷却脉冲的脉冲序列，以便将要记录的数据编码和写入作为长度为nT的记录标记沿着 记录层，其中n是整数，T是一个时钟周期。 使用（n-1）个写入脉冲形成nT记录标记，当形成4T以上的记录标记时，在最后写入脉冲之前插入脉冲宽度为0.8T〜2T的冷却脉冲 。 因此，可以精确地形成记录标记，而不会在连续记录标记之间产生热干扰，并且在相邻轨道的记录标记之间进行交叉擦除。

公开(公告)号：US07701838B2

公开(公告)日：2010-04-20

申请号：US11168475

申请日：2005-06-29

申请人： Takashi Kikukawa ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tatsuya Kato

发明人： Takashi Kikukawa ,  Hajime Utsunomiya ,  Hiroshi Shingai ,  Tatsuya Kato

IPC分类号： G11B7/24

CPC分类号： G11B7/24085 ,  B82Y10/00 ,  G11B7/0052 ,  G11B7/24

摘要： In an optical information medium having an information bearing surface having projections and depressions and/or capable of forming recorded marks, a functional layer is added. The information borne on the information bearing surface can be read by using reading light of a wavelength longer than 4NA·PL wherein PL is the minimum size of the projections and depressions or the recorded marks and NA is the numerical aperture of a reading optical system, setting the power of the reading light within such a range that the functional layer does not change its complex index of refraction, and irradiating the reading light to the information bearing surface constructed by the functional layer or to the information bearing surface through the functional layer or to the functional layer through the information bearing surface. The medium enables reading at a high resolution beyond the diffraction limit.

摘要翻译： 在具有具有凹凸和/或能够形成记录标记的信息承载面的光信息介质中，添加功能层。 可以通过使用波长大于4NA·PL的读取光读取信息承载面上的信息，其中PL是凹凸或记录标记的最小尺寸，NA是读取光学系统的数值孔径， 将读取光的功率设定在功能层不改变其复杂折射率的范围内，并且通过功能层将读取光照射到由功能层构成的信息承载面或信息承载面，或 通过信息轴承表面到功能层。 该介质能够以超过衍射极限的高分辨率进行读取。

公开(公告)号：US07362682B2

公开(公告)日：2008-04-22

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： G11B7/00

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：US07173893B2

公开(公告)日：2007-02-06

申请号：US10489050

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： G11B7/126 ,  G11B7/0045 ,  G11B7/00454 ,  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 each with different lengths, wherein a first recording mark and a second recording mark contained within said group are formed with the number of pulses and the pulse spacing in the laser beam set substantially equal to each other. Thus, even in the case that one clock period (T) is shortened to achieve high transfer rates, recording marks with good shapes can be formed. In addition, control is simplified and it is possible to reduce the cost of a drive to which the present invention is applied.

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通过在光记录介质上形成多个记录标记来记录信息到光记录介质上的方法，所述多个记录标记选自由具有不同的几种类型的记录标记组成的组 长度，其中包含在所述组内的第一记录标记和第二记录标记以脉冲数形成，并且激光束中的脉冲间隔基本上彼此相等。 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，也可以形成具有良好形状的记录标记。 此外，控制简化，并且可以降低应用本发明的驱动器的成本。

公开(公告)号：US20060067197A1

公开(公告)日：2006-03-30

申请号：US11209826

申请日：2005-08-24

申请人： Tetsuro Mizushima ,  Hideaki Miura ,  Tatsuya Kato ,  Hironori Kakiuchi ,  Hiroshi Shingai ,  Jiro Yoshinari

发明人： Tetsuro Mizushima ,  Hideaki Miura ,  Tatsuya Kato ,  Hironori Kakiuchi ,  Hiroshi Shingai ,  Jiro Yoshinari

IPC分类号： G11B7/00

CPC分类号： G11B7/0062 ,  G11B7/24038 ,  G11B2007/0013

摘要： An information recording method enables the precise formation of a recording mark on a recording layer having a high light transmittance such as an L1 layer of a double-layered optical recording medium. The information recording method uses the following recording strategy. A laser beam is pulse-modulated so as to create a pulse series including a write pulse of a recording power and a cooling pulse of a base power. Data to be recorded is modulated to have a length of a recording mark along a track of the recording layer. At the same time, the length of the recording mark is made to correspond to an integral multiple nT of T where T is one clock cycle. An nT recording mark corresponding to nT is recorded by using the same number of write pulses and cooling pulses when n is 4 or larger. Moreover, an average width AveTc for a single cooling pulse width Tc is set to satisfy: 1.0

摘要翻译： 信息记录方法能够在具有高透光率的记录层上精确地形成记录标记，例如双层光记录介质的L1层。 信息记录方法使用以下记录策略。 激光束被脉冲调制，以产生包括记录功率的写入脉冲和基本功率的冷却脉冲的脉冲序列。 要记录的数据被调制成具有沿着记录层的轨道的记录标记的长度。 同时，使记录标记的长度对应于T的整数倍nT，其中T是一个时钟周期。 当n为4以上时，通过使用相同数量的写入脉冲和冷却脉冲来记录对应于nT的nT记录标记。 此外，将单个冷却脉冲宽度Tc的平均宽度AveTc设定为满足：1.0

公开(公告)号：US20050286383A1

公开(公告)日：2005-12-29

申请号：US11167291

申请日：2005-06-28

申请人： Tetsuro Mizushima ,  Tatsuya Kato ,  Hiroshi Shingai ,  Hideaki Miura ,  Jiro Yoshinari

发明人： Tetsuro Mizushima ,  Tatsuya Kato ,  Hiroshi Shingai ,  Hideaki Miura ,  Jiro Yoshinari

IPC分类号： G11B7/00 ,  G11B7/0045

CPC分类号： G11B7/00456 ,  G11B2007/0013

摘要： A method of recording data on a double-layer optical recording medium having a recording layer with high light transmittance is provided. A laser beam is modulated to emit a pulse series of laser including a write pulse of a write power and a cooling pulse of a bottom power, so as to encode and write data to be recorded as recording marks of a length nT along a track of the recording layer, where n is an integer and T is one clock cycle. An nT recording mark is formed using (n-1) write pulse(s), and when forming a recording mark of 4 T or longer, a cooling pulse with a pulse width of 0.8 T to 2 T is inserted before the last write pulse. Recording marks are thereby accurately formed without heat interference between consecutive recording marks and cross erase between recording marks of adjacent tracks.

摘要翻译： 提供了一种在具有高透光性的记录层的双层光学记录介质上记录数据的方法。 激光束被调制以发射包括写入功率的写入脉冲和底部功率的冷却脉冲的脉冲序列，以便将要记录的数据编码和写入作为长度为nT的记录标记沿着 记录层，其中n是整数，T是一个时钟周期。 使用（n-1）个写入脉冲形成nT记录标记，当形成4T以上的记录标记时，在最后写入脉冲之前插入脉冲宽度为0.8T〜2T的冷却脉冲 。 因此，可以精确地形成记录标记，而不会在连续记录标记之间产生热干扰，并且在相邻轨道的记录标记之间

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：US06430128B1

公开(公告)日：2002-08-06

申请号：US09714963

申请日：2000-11-20

申请人： Tatsuya Kato ,  Hajime Utsunomiya ,  Takashi Kikukawa ,  Hiroshi Shingai

发明人： Tatsuya Kato ,  Hajime Utsunomiya ,  Takashi Kikukawa ,  Hiroshi Shingai

IPC分类号： G11B509

CPC分类号： G11B7/1267 ,  G11B7/24065 ,  G11B7/24085

摘要： The present invention provides a method for determining optimal read power adapted for use in an optical information medium wherein super-resolution readout beyond diffraction limit is conducted. Also provided is an optical information medium adapted for use in such method. In this method, when the readout is conducted under the conditions: LMIN

摘要翻译： 本发明提供了一种用于确定适用于光信息介质的最佳读取功率的方法，其中进行超分辨率读出超出衍射极限。 还提供了适于在这种方法中使用的光学信息介质。 在这种方法中，当在LMIN

公开(公告)号：US07859968B2

公开(公告)日：2010-12-28

申请号：US12352304

申请日：2009-01-12

申请人： Takashi Kikukawa ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

发明人： Takashi Kikukawa ,  Tatsuya Kato ,  Hajime Utsunomiya ,  Hiroshi Shingai

IPC分类号： G11B7/0045

CPC分类号： G11B7/005 ,  G11B7/1263 ,  G11B7/24

摘要： An information readout method for an optical information medium comprising an information recording layer having pits or recorded marks representative of information data involves the step of irradiating a laser beam to the information recording layer through an objective lens for providing readings of the pits or recorded marks. When the laser beam has a wavelength λ of 400 to 410 nm, the objective lens has a numerical aperture NA of 0.70 to 0.85, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 0.4 mW for the laser beam. When the laser beam has a wavelength λ of 630 to 670 nm, the objective lens has a numerical aperture NA of 0.60 to 0.65, and the pits or recorded marks have a minimum size PL of up to 0.36λ/NA, readout is carried out at a power Pr of at least 1.0 mW for the laser beam. Pits or recorded marks of a size approximate to the resolution limit determined by diffraction can be read out at a high C/N.

摘要翻译： 包括具有表示信息数据的凹坑或记录标记的信息记录层的光信息介质的信息读出方法包括通过用于提供凹坑或记录标记的读数的物镜将激光束照射到信息记录层的步骤。 当激光束具有400至410nm的波长λ时，物镜的数值孔径NA为0.70至0.85，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少0.4mW。 当激光束具有630至670nm的波长λ时，物镜的数值孔径NA为0.60至0.65，并且凹坑或记录标记具有高达0.36λ/ NA的最小尺寸PL，读出被执行 在激光束的功率Pr为至少1.0mW。 通过衍射确定的大小接近分辨率极限的刻痕或记录标记可以高C / N读出。