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1. 发明授权

US06661745B1 Optical reproducing and recording method, recording medium, and optical device 失效
标题翻译：光学再现和记录方法，记录介质和光学装置
公开(公告)号：US06661745B1
公开(公告)日：2003-12-09
申请号：US09537235
申请日：2000-03-28
申请人： Junji Tominaga , Nobufumi Atoda , Hiroshi Fuji , Hiroyuki Katayama , Kenji Ohta
发明人： Junji Tominaga , Nobufumi Atoda , Hiroshi Fuji , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B700
CPC分类号： B82Y10/00 , G11B7/1387 , G11B7/24065 , G11B11/10584 , G11B11/10586
摘要： An optical device and a recording medium are provided with a recording layer for recording information by radiation of light, and a mask layer which is formed closely to the recording layer, reduces its transmittance of light due to light or heat, and transmits light to the recording layer by using a near-field effect. An optical reproducing and recording method includes the steps of: emitting a laser beam onto the mask layer, generating a near field around an area of the mask layer that has transmittance being reduced by the laser beam, and reproducing or recording optical information in the recording layer by interaction between the near field and the recording layer. With this method, it is possible to provide the optical device, recording medium, and optical reproducing and recording method that can realize a high S/N ratio upon reproducing and recording and that can readily form a recording mark.
摘要翻译：光学器件和记录介质设置有用于通过照射光来记录信息的记录层和与记录层紧密相邻形成的掩模层，减少其由于光或热导致的光的透射率，并将光透射到记录层通过使用近场效应。光学再现和记录方法包括以下步骤：将激光束发射到掩模层上，产生围绕掩模层的区域的近场，该区域具有通过激光束减少的透射率，以及在记录中再现或记录光学信息通过近场和记录层之间的相互作用来形成层。利用这种方法，可以提供在再现和记录时可以实现高S / N比并且可以容易地形成记录标记的光学设备，记录介质和光学再现和记录方法。

2. 发明授权

US06819648B1 Optical sample and method of writing and reading information on the same 失效
标题翻译：光学样本和写入和读取信息的方法相同
公开(公告)号：US06819648B1
公开(公告)日：2004-11-16
申请号：US09585554
申请日：2000-06-02
申请人： Junji Tominaga , Nobufumi Atoda , Hiroshi Fuji , Hiroyuki Katayama , Kenji Ohta
发明人： Junji Tominaga , Nobufumi Atoda , Hiroshi Fuji , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B700
CPC分类号： G11B7/252 , B82Y10/00 , G11B7/24065 , G11B7/243 , G11B7/2534 , G11B2007/25706 , G11B2007/2571 , G11B2007/25715 , G11B2007/25716
摘要： An optical sample includes a mask layer made of a material in which an aperture is produced by a chemical change, which is reversible, upon application of heat or light, and a recording layer provided at a position where an evanescent field produced in the aperture when light is applied to the mask layer can reach. Since the aperture is produced in the mask layer by a chemical change, it can be opened and closed at a high speed and hence a high-speed transfer of information can be achieved.
摘要翻译：光学样品包括掩模层，其由其中通过化学变化产生孔的材料制成，其在施加热或光时是可逆的，以及设置在在孔中产生的ev逝场的位置处的记录层，光应用于掩模层可以达到。由于通过化学变化在掩模层中产生孔径，所以可以高速地打开和关闭孔，因此可以实现高速的信息传递。

3. 发明授权

US06741549B2 Optical recording medium and optical recording and reproduction apparatus 失效
标题翻译：光学记录介质和光学记录和再现设备
公开(公告)号：US06741549B2
公开(公告)日：2004-05-25
申请号：US09922026
申请日：2001-07-10
申请人： Junji Tominaga , Jooho Kim , Nobufumi Atoda , Hiroshi Fuji , Hiroyuki Katayama
发明人： Junji Tominaga , Jooho Kim , Nobufumi Atoda , Hiroshi Fuji , Hiroyuki Katayama
IPC分类号： G11B370
CPC分类号： B82Y10/00 , G11B7/126 , G11B11/10508 , G11B11/10515 , G11B11/10545 , G11B11/10584 , G11B11/10593 , G11B11/10595
摘要： An optical recording medium in accordance with the present invention is provided with a substrate, a mask layer, provided on the substrate, whose index of refraction changes due to light or heat of the substrate, and a recording layer that is provided away from the mask layer by a distance that is not more than a distance which allows the near-field light to reach. The mask layer generates a minute opaque region in a light spot and the recording layer is a magneto-optical layer. An optical recording and reproduction apparatus in accordance with the present invention uses the optical recording medium. This allows to provide an optical recording medium and an optical recording and reproduction apparatus that can suppress the erasure of recorded marks and carry out the reproduction again and again.
摘要翻译：根据本发明的光记录介质设置有设置在基板上的基板，掩模层，其折射率由于基板的光或热而变化，以及远离掩模设置的记录层层距离不大于允许近场光到达的距离。掩模层在光点中产生微小的不透明区域，记录层是磁光层。根据本发明的光学记录和再现装置使用光学记录介质。这允许提供可以抑制记录标记的擦除并且一次又一次地执行再现的光学记录介质和光学记录和再现装置。

4. 发明授权

US06804822B2 Magnetic recording medium and magnetic recording apparatus using same 有权
标题翻译：磁记录介质和使用其的磁记录装置
公开(公告)号：US06804822B2
公开(公告)日：2004-10-12
申请号：US10132775
申请日：2002-04-25
申请人： Junichi Sato , Kosuke Watanabe , Kunio Kojima , Hiroyuki Katayama , Hiroshi Fuji , Kenji Ohta
发明人： Junichi Sato , Kosuke Watanabe , Kunio Kojima , Hiroyuki Katayama , Hiroshi Fuji , Kenji Ohta
IPC分类号： G11B724
CPC分类号： G11B5/7325 , G11B5/012 , G11B5/74 , G11B5/82 , G11B11/10508 , G11B11/10584 , G11B11/10591 , G11B2005/0005 , G11B2005/0021
摘要： A magnetic recording medium, which includes a substrate and an amorphous magnetic layer, made of an amorphous magnetic material, for magnetic recording of data, is provided with an underlayer between the substrate and the amorphous magnetic layer, the underlayer being made of amorphous metal element, and having a mean thickness of 10 nm or less. In this manner, movement of magnetic domain walls of the amorphous magnetic layer is effectively limited by minute irregularities on a surface of the underlayer. This realizes a stable formation of a minute recording mark. This realizes recording having a sufficient signal quality, even when the high-density recording is performed by forming such a minute recording mark that a shortest length of the recording mark is less than 100 nm. Moreover, this allows the magnetic recording medium to have a simplified layer structure. Further, a magnetic recording apparatus magnetically records data onto a magnetic recording medium having the above arrangement, by heating a portion of the magnetic layer by radiating a light beam locally, and by applying a magnetic field on at least part of the portion of the magnetic layer on which the light beam is radiated. This provides a magnetic recording apparatus for high-density recording.
摘要翻译：包括由非晶磁性材料制成的用于磁记录数据的基板和非晶磁性层的磁记录介质在基板和非晶磁性层之间设置有底层，底层由非晶金属元件平均厚度为10nm以下。以这种方式，非晶磁性层的磁畴壁的运动被有效地限制在底层表面上的微小凹凸。这实现了一个稳定的分钟记录标记的形成。这实现了具有足够的信号质量的记录，即使当通过形成记录标记的最短长度小于100nm的这种微小记录标记来执行高密度记录时。此外，这允许磁记录介质具有简化的层结构。此外，磁记录装置将数据磁记录到具有上述结构的磁记录介质上，通过局部辐射光束加热磁性层的一部分，并且通过在磁体的至少一部分上施加磁场光束辐射的层。这提供了用于高密度记录的磁记录装置。

5. 发明授权

US06876603B2 Information write/read head including an optical slit having a light emitting section whose width is shorter than a light beam diffraction limit 有权
$Information write/read head including an optical slit having a light emitting section whose width is shorter than a light beam diffraction limit$
标题翻译：信息写入/读取头，包括具有宽度短于光束衍射极限的发光部的光学狭缝
公开(公告)号：US06876603B2
公开(公告)日：2005-04-05
申请号：US09864060
申请日：2001-05-23
申请人： Hiroshi Fuji , Hiroyuki Katayama , Kunio Kojima , Kenji Ohta
发明人： Hiroshi Fuji , Hiroyuki Katayama , Kunio Kojima , Kenji Ohta
IPC分类号： G11B11/10 , G11B5/00 , G11B5/02 , G11B5/127 , G11B13/04 , G11B21/10 , G11B11/00
CPC分类号： G11B5/127 , G11B13/045 , G11B2005/0002 , G11B2005/0005 , G11B2005/0021
摘要： An information write/read head writes or reads information on or from recording tracks by the heat-assisted system. The information write/read head includes a magnetic head provided in such a manner that a longitudinal direction of a magnetic gap crosses a scanning direction. Further, the information write/read head includes an aperture slit having a length of not less than a diffraction limit of a light beam, and a width shorter than the diffraction limit in the direction orthogonal to the recording track, which is formed in such a manner that the longitudinal direction thereof is aligned in a scanning direction of the recording track.
摘要翻译：信息写入/读取头通过热辅助系统在记录轨道上或从记录轨迹读取信息。信息写入/读取头包括以使得磁隙的纵向方向与扫描方向交叉的方式设置的磁头。此外，信息写入/读取头包括具有不小于光束的衍射极限的长度的孔径狭缝，并且其宽度比在与记录轨道正交的方向上的衍射极限短，使得其纵向方向在记录轨道的扫描方向上对齐。

6. 发明授权

US5674583A Optical recording medium and manufacturing method thereof 失效
标题翻译：光记录介质及其制造方法
公开(公告)号：US5674583A
公开(公告)日：1997-10-07
申请号：US461164
申请日：1995-06-05
申请人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
发明人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Kazuo Van
IPC分类号： G11B5/00 , G11B7/003 , G11B7/004 , G11B7/007 , G11B7/24 , G11B7/26 , G11B11/105 , G11B13/00 , G11B13/04 , G11B20/00 , G11B23/28 , G11B5/66
CPC分类号： G11B23/281 , G11B11/10582 , G11B13/00 , G11B13/04 , G11B13/045 , G11B23/28 , G11B5/00 , G11B7/0031 , G11B7/24 , G11B7/26 , G11B11/10502 , G11B20/00086 , G11B7/004 , G11B7/007 , Y10S428/90 , Y10T428/265
摘要： An optical tape including an optical recording layer for permitting information to be optically recorded thereon and a light-reflective magnetic layer; the light-reflective magnetic layer which reflects light projected onto the recording layer, also permits magnetic recording or magneto-optical recording to be performed thereon, thereby increasing a storage capacity of the optical tape remarkably; further, the optical tape is provided with a layer to form guiding grooves for tracking control, which layer to form guiding grooves is made up of ultraviolet-hardening resin, photo-resist, or a photochromic material.
摘要翻译：一种光学带，包括用于允许光学记录信息的光学记录层和光反射性磁性层; 反映投影到记录层上的光的光反射性的磁性层也可以在其上进行磁记录或磁光记录，从而显着地增加了光带的存储容量。此外，光带设置有层以形成用于跟踪控制的引导槽，其中形成导向槽的层由紫外线硬化树脂，光致抗蚀剂或光致变色材料构成。

7. 发明授权

US5662988A Magneto-optical recording medium 失效
标题翻译：磁光记录介质
公开(公告)号：US5662988A
公开(公告)日：1997-09-02
申请号：US387294
申请日：1995-02-10
申请人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Yoshiteru Murakami
发明人： Junichiro Nakayama , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta , Yoshiteru Murakami
IPC分类号： G11B11/105 , G11B11/10 , G11B13/04
CPC分类号： G11B11/10586 , G11B11/10506 , G11B11/10515 , Y10S428/90 , Y10S430/146 , Y10T428/12632 , Y10T428/12861 , Y10T428/12986 , Y10T428/24942 , Y10T428/31678
摘要： The magneto-optical recording medium is provided with a readout layer which shows the in-plane magnetization and which changes from the in-plane magnetization to the vertical magnetization when its temperature rises higher than a predetermined temperature by irradiation of the light beam, a memory layer which records information thereon magneto-optically, an intermediate layer which keeps in-plane magnetization from room temperatures to its Curie temperature, and an writing layer which has a Curie temperature higher than that of the memory layer and has coercive force lower than that of the memory layer. Since the intermediate layer becomes a domain wall in optical modulation recording, it prevents the memory layer and the writing layer from forming a domain wall, so information can be recorded in good condition. Moreover, a portion of the readout layer besides a center portion of the light beam shows the in-plane magnetization and masks the memory layer at playback. Therefore, a recording bit can be made small and recording density can be improved without increasing interference of signals from neighboring recording bits, which causes noises.
摘要翻译：磁光记录介质设置有读出层，该读出层显示平面内的磁化强度，并且当读出层的温度通过照射光束而升高到高于预定温度时，其从平面内磁化强度变化到垂直磁化强度;存储器在磁光上记录信息的层，将室内的平面磁化保持到其居里温度的中间层，以及具有比存储层的居里温度高的居里温度并具有低于存储层的矫顽力的矫顽力的写层内存层。由于中间层成为光调制记录中的畴壁，因此防止存储层和写入层形成畴壁，因此可以将信息记录在良好状态。此外，除了光束的中心部分之外，读出层的一部分表示平面内磁化，并且在重放时掩蔽存储层。因此，可以使记录位小，并且可以提高记录密度，而不会增加来自相邻记录位的信号的干扰，这导致噪声。

8. 发明授权

US5637394A Magneto-optical recording medium and method of reproducing magneto-optical information using thereof 失效
标题翻译：磁光记录介质及其再现磁光信息的方法
公开(公告)号：US5637394A
公开(公告)日：1997-06-10
申请号：US356857
申请日：1994-12-15
申请人： Junsaku Nakajima , Naoyasu Iketani , Yoshiteru Murakami , Akira Takahashi , Hiroyuki Katayama , Kenji Ohta
发明人： Junsaku Nakajima , Naoyasu Iketani , Yoshiteru Murakami , Akira Takahashi , Hiroyuki Katayama , Kenji Ohta
IPC分类号： G11B11/105 , G11B5/66
CPC分类号： G11B11/10586 , G11B11/10515 , G11B11/10584 , Y10S428/90 , Y10T428/26 , Y10T428/265
摘要： A magneto-optical recording medium comprising a readout layer and a recording layer has a relationship that an external magnetic field H1 is smaller than an external magnetic field H4, where the H1 is a minimum external magnetic field necessary to make a magnetization direction of the readout layer direct to the direction reverse to a magnetization direction of the recording layer substantially at the room temperature, and the H4 is a maximum external magnetic field necessary to make the magnetization direction of the readout layer direct to the direction same as the magnetization direction of the recording layer at an high temperature not lower than a predetermined temperature. Moreover, the magneto-optical disk is provided, between the readout layer and the recording layer, with an intermediate layer which inhibits an effective bias magnetic field from the recording layer to the readout layer at the room temperature. Since it is possible to reproduce only the information in the high-temperature area close to the center of the laser beam irradiated during reproducing, recording density is improved. Furthermore, since an initializing magnetic field at reproducing is not necessary and the reproducing magnetic field can be made smaller, the apparatus can be made smaller and the electric power consumption can be decreased.
摘要翻译：包括读出层和记录层的磁光记录介质具有外部磁场H1小于外部磁场H4的关系，其中H1是使读出磁化方向发生所需的最小外部磁场层直接与基本上在室温下的记录层的磁化方向相反的方向，并且H4是使读出层的磁化方向直到与磁化方向相同的方向所需的最大外部磁场记录层在不低于预定温度的高温下进行。此外，在读出层和记录层之间设置磁光盘，其中间层在室温下抑制从记录层到读出层的有效偏置磁场。由于只能再现靠近在再现期间照射的激光束的中心的高温区域的信息，所以记录密度提高。此外，由于不需要再现时的初始化磁场并且可以使再现磁场更小，所以可以使装置更小，并且可以降低电力消耗。

9. 发明授权

US5600627A Optical disk and a method for recording, reproducing, and deleting information on and from the optical disk 失效
标题翻译：光盘以及用于在光盘上记录，再现和删除信息的方法
公开(公告)号：US5600627A
公开(公告)日：1997-02-04
申请号：US340333
申请日：1994-11-14
申请人： Junji Hirokane , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
发明人： Junji Hirokane , Hiroyuki Katayama , Akira Takahashi , Kenji Ohta
IPC分类号： G11B7/007 , G11B7/013 , G11B7/14 , G11B13/04
CPC分类号： G11B7/00745 , G11B7/14 , G11B7/24079 , G11B7/24085
摘要： The method of the present invention is for recording, reproducing, and deleting information on and from an optical disk including a plurality of tracks each having M guide grooves (M is an integer equal to or larger than 2) and M-1 land(s) interposed between the adjacent guide grooves, at least one of the land(s) having a group of pits for producing address information. The method includes the step of: focusing light beams on the respective guide grooves and land(s) for effecting the recording, reproduction, and deletion of information. Such an optical disk is also provided.
摘要翻译：本发明的方法是用于在包括M个导槽（M为2以上的整数）的多个轨道的光盘上记录，再现和删除信息，M-1个地面）插入在相邻引导槽之间，至少一个具有一组凹坑的区域用于产生地址信息。该方法包括以下步骤：将光束聚焦在各个引导槽和岸台上，以进行信息的记录，再现和删除。还提供了这种光盘。

10. 发明授权

US5459711A Optical recording element and driving system 失效
标题翻译：光学记录元件和驱动系统
公开(公告)号：US5459711A
公开(公告)日：1995-10-17
申请号：US219253
申请日：1994-03-29
申请人： Kenji Ohta , Tetsuya Inui , Hiroyuki Katayama , Akira Takahashi , Junji Hirokane , Yukinori Nishitani , Michinobu Mieda , Kazuo Van
发明人： Kenji Ohta , Tetsuya Inui , Hiroyuki Katayama , Akira Takahashi , Junji Hirokane , Yukinori Nishitani , Michinobu Mieda , Kazuo Van
IPC分类号： G11B7/0045 , G11B7/013 , G11B7/09 , G11B7/125 , G11B7/24 , G11B7/24085 , G11B11/105 , G11B19/02 , G11B3/78
CPC分类号： G11B7/0045 , G11B11/10528 , G11B11/10578 , G11B11/10595 , G11B19/02 , G11B7/0938 , G11B7/126 , G11B7/24 , G11B7/24085
摘要： An optical recording element comprising a recording medium which includes an information recording area formed at every unit in a non-continuous condition, the recording medium further including sample pits disposed at intervals of a fixed distance for providing basic information about the locations of the recording units in same track. Each sample pit comprises a plurality of pits disposed next to the sequence of the recording units so that the spacing between the pits differs from the spacing between the recording units. At least one of the plurality of pits is a long-sized inclined pit which is inclined at an angle in the range of 6.degree. to 80.degree. to a recording track. A driving system for driving the optical recording element for recording information in the non-continuous recording area or erasing information stored therein with a light beam the output of which is varied as required and checking whether said recording or erasing has been correctly performed, within a very short time in which the light beam passes through the non-continuous recording area. By using the optical recording element in combination with its driving system, the processing speed for reducing, erasing and verifying these functions can be greatly improved and the irradiating position of the light beam at every recording unit can be correctly controlled.
摘要翻译：一种光记录元件，包括记录介质，该记录介质包括在非连续状态下在每个单元处形成的信息记录区域，所述记录介质还包括以固定距离间隔设置的样品坑，以提供关于记录单元的位置的基本信息在同一轨道。每个采样坑包括靠近记录单元序列设置的多个凹坑，使得凹坑之间的间隔与记录单元之间的间隔不同。多个凹坑中的至少一个是相对于记录轨道以6°至80°的角度倾斜的长尺寸倾斜凹坑。一种驱动系统，用于驱动用于在非连续记录区域中记录信息的光学记录元件，或者用存储在其中的光束擦除信息，该光束的输出根据需要变化，并且检查是否正确地执行了所述记录或擦除光束通过非连续记录区域的非常短的时间。通过与其驱动系统结合使用光学记录元件，可以大大提高用于减少，擦除和验证这些功能的处理速度，并且可以正确地控制每个记录单元处的光束的照射位置。

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