公开(公告)号：US20090073862A1

公开(公告)日：2009-03-19

申请号：US10577538

申请日：2004-10-27

申请人： Takayuki Shima ,  Junji Tominaga ,  Hiroshi Fuji ,  Takashi Kikukawa

发明人： Takayuki Shima ,  Junji Tominaga ,  Hiroshi Fuji ,  Takashi Kikukawa

IPC分类号： G11B7/24

CPC分类号： G11B7/24 ,  G11B7/252 ,  G11B2007/24308 ,  G11B2007/2431 ,  G11B2007/24314 ,  G11B2007/24316

摘要： It is an object of the present invention to provide an optical recording disc which can record data constituted by a recording mark train including recording marks and blank regions neighboring recording marks therein and reproduce the data therefrom in a desired manner even in the case where the lengths of a recording mark and a blank region between neighboring recording marks are shorter than the resolution limit and whose storage capacity can be markedly increased.An optical recording disc is constituted so that data are recorded therein and data are reproduced therefrom with the irradiation with a laser beam and includes a laminated body formed by laminating a decomposition reaction layer 5 containing platinum oxide as a primary component and a light absorbing layer 7 so as to sandwich a second dielectric layer 6. The optical recording disc is further constituted so that when it is irradiated with the laser beam, a bubble pit is formed in the decomposition reaction layer 5 and fine particles of platinum precipitate into the bubble pit, thereby forming a recording mark in the decomposition reaction layer 5 and each of the fine particles of platinum has a particle diameter of 2 nm to 15 nm.

摘要翻译： 本发明的目的是提供一种光学记录盘，其可以记录由包括记录标记和包括记录标记在内的空白区域的记录标记列构成的数据，并且以期望的方式再现其数据，即使在长度 的记录标记和相邻记录标记之间的空白区域比分辨率限制短，并且其存储容量可以显着增加。 光记录盘被构成为使得数据被记录在其中并且通过激光束的照射再现数据，并且包括通过层压包含氧化铂作为主要成分的分解反应层5和光吸收层7形成的层压体 以夹持第二电介质层6.光记录盘还被构造成使得当被激光束照射时，在分解反应层5中形成气泡坑，并且铂微粒沉淀到气泡坑中， 从而在分解反应层5中形成记录标记，并且每个铂微粒的粒径为2nm至15nm。

公开(公告)号：US07394338B2

公开(公告)日：2008-07-01

申请号：US11330899

申请日：2006-01-12

申请人： Masataka Iwakuma ,  Akira Tomioka ,  Masayuki Konno ,  Hiroshi Fuji ,  Kenji Suzuki ,  Teruo Izumi ,  Yuh Shiohara ,  Hidemi Hayashi

发明人： Masataka Iwakuma ,  Akira Tomioka ,  Masayuki Konno ,  Hiroshi Fuji ,  Kenji Suzuki ,  Teruo Izumi ,  Yuh Shiohara ,  Hidemi Hayashi

IPC分类号： H01F6/00

CPC分类号： H01F6/06 ,  H01F27/2871 ,  H01F27/346 ,  H01F2027/2838 ,  Y10S505/879

摘要： In one embodiment, a superconducting coil includes a tertiary parallel superconductor unit (60) composed of superposed in parallel a plurality of layers of secondary parallel superconductor units (50). The layers of secondary parallel superconductor units include a plurality of superconductor elements (40) arranged in parallel along the axial direction of the coil, forming a superconducting conductor unit. The tertiary parallel superconductor unit is wound on a bobbin (55). In another embodiment, the superconducting coil includes one or more layers of the secondary parallel superconductor unit wound on the bobbin. In both embodiments, the secondary parallel superconductor unit can include at least one non-superconducting conductor element (70). The layer of the secondary parallel superconductor unit forming an outer side of the tertiary parallel superconductor unit can include at least one non-superconducting conductor element. A layer of non-superconducting conducting or high-strength insulating supporting member (71) of electromagnetic force can be formed on the outer side of the tertiary parallel superconductor unit.

摘要翻译： 在一个实施例中，超导线圈包括由并联叠置的多个次级并联超导体单元（50）组成的第三平行超导体单元（60）。 次级并联超导体单元的层包括沿着线圈的轴向平行布置的多个超导体元件（40），形成超导导体单元。 第三并联超导体单元卷绕在线轴（55）上。 在另一个实施例中，超导线圈包括缠绕在线轴上的次级平行超导体单元的一层或多层。 在两个实施例中，次级并联超导体单元可以包括至少一个非超导导体元件（70）。 形成第三平行超导体单元的外侧的次级并联超导体单元的层可以包括至少一个非超导导体元件。 可以在第三平行超导体单元的外侧形成电磁力的非超导导电或高强度绝缘支撑构件（71）的层。

公开(公告)号：US06956808B2

公开(公告)日：2005-10-18

申请号：US10680215

申请日：2003-10-08

申请人： Shintaro Miyanishi ,  Kunio Kojima ,  Hiroshi Fuji ,  Mototaka Taneya

发明人： Shintaro Miyanishi ,  Kunio Kojima ,  Hiroshi Fuji ,  Mototaka Taneya

IPC分类号： H01S5/30 ,  G11B7/12 ,  G11B7/135 ,  G11B7/00 ,  H01S5/00

CPC分类号： G11B7/1387 ,  G11B7/122

摘要： An aperture 12 for producing an evanescent wave is provided at an n-Au electrode 106. The aperture 12 is directed roughly perpendicularly to a direction in which end faces 104a of an active layer 104 of an optical device oppose to each other, and therefore, laser light generated in the active layer 104 is made incident in the form of the p-polarized light. By the incidence of the p-polarized laser light, an evanescent wave of a comparatively great intensity is obtained from the aperture 12. With this arrangement, an optical device capable of obtaining an evanescent wave of a comparatively great intensity is provided.

摘要翻译： 在n-Au电极106处设置用于产生ev逝波的孔12。 孔12大致垂直于光学装置的有源层104的端面104a彼此相对的方向，因此在有源层104中产生的激光以p的形式入射 -偏振光。 通过p极化激光的入射，从孔12获得相对较大强度的ev逝波。 通过这种布置，可以提供能够获得相当大强度的ev逝波的光学装置。

公开(公告)号：US06847592B2

公开(公告)日：2005-01-25

申请号：US09909291

申请日：2001-07-19

申请人： Tetsuya Okumura ,  Hiroshi Fuji

发明人： Tetsuya Okumura ,  Hiroshi Fuji

IPC分类号： G11B7/005 ,  G11B7/007 ,  G11B7/013 ,  G11B7/125 ,  G11B11/105 ,  G11B27/30 ,  G11B11/00

CPC分类号： G11B7/126 ,  G11B7/005 ,  G11B7/00745 ,  G11B7/013 ,  G11B11/10515 ,  G11B11/10595 ,  G11B27/3027

摘要： An optical reproducing device according to the present invention detects mean amplitude values of short marks and long marks, which are recorded marks for reproducing power control, by means of a short mark level detecting circuit and a long mark level detecting circuit. Then a differential amplifier compares a ratio between these two mean amplitude values with a standard value, and outputs the result of this comparison. Thereafter, a reproducing power control circuit controls reproducing power of a semiconductor laser such that the absolute value of this comparison result is reduced. Since mean values of the amplitude values of the short marks and long marks are detected, the detection results are very accurate, and the precision of control of reproducing power can be greatly improved.

摘要翻译： 根据本发明的光学再现装置通过短标记电平检测电路和长标记电平检测电路检测作为用于再现功率控制的记录标记的短标记和长标记的平均幅度值。 然后，差分放大器将这两个平均幅度值之间的比率与标准值进行比较，并输出该比较的结果。 此后，再现功率控制电路控制半导体激光器的再现功率，使得该比较结果的绝对值降低。 由于检测到短标记和长标记的振幅值的平均值，因此检测结果非常准确，可以大大提高再现功率的控制精度。

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。

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。

公开(公告)号：US06310846B1

公开(公告)日：2001-10-30

申请号：US09190329

申请日：1998-11-12

申请人： Hiroshi Fuji

发明人： Hiroshi Fuji

IPC分类号： G11B390

CPC分类号： G11B7/126 ,  G11B7/0045 ,  G11B7/24085 ,  G11B11/1053 ,  G11B11/10595 ,  G11B20/182 ,  G11B27/36 ,  G11B2220/2525

摘要： A recording conditions controlling method for an optical memory device of the present invention includes the steps of: a reproducing condition controlling step for projecting light on an optical recording medium on which information is recorded and measuring a reproducing signal read so as to control a recording condition optimum; and a recording condition controlling step for controlling a recording condition in accordance with the reproducing condition thus optimized. This prevents destruction of an optical disk by heat, which occurs when the heat capacity of the optical disk is small and/or when the environment temperature is high, thus realizing a stable control of recording light quantity.

摘要翻译： 本发明的光存储器件的记录条件控制方法包括以下步骤：再现条件控制步骤，用于将光投射到记录有信息的光记录介质上，并测量读取的再现信号，以控制记录条件 最佳; 以及记录条件控制步骤，用于根据如此优化的再现条件来控制记录条件。 这防止了当光盘的热容量小和/或环境温度高时发生的热量的光盘的破坏，从而实现了对记录光量的稳定控制。

公开(公告)号：US5852599A

公开(公告)日：1998-12-22

申请号：US787601

申请日：1997-01-22

申请人： Hiroshi Fuji

发明人： Hiroshi Fuji

IPC分类号： G11B7/0045 ,  G11B7/005 ,  G11B7/007 ,  G11B7/09 ,  G11B7/26 ,  G11B11/105 ,  G11B19/24 ,  G11B20/12 ,  G11B27/19 ,  G11B27/30 ,  G11B7/24

CPC分类号： G11B7/24082 ,  G11B11/10565 ,  G11B19/24 ,  G11B20/1217 ,  G11B27/19 ,  G11B27/3018 ,  G11B27/3027 ,  G11B7/0053 ,  G11B7/00718 ,  G11B7/261 ,  G11B11/10578 ,  G11B2020/1239 ,  G11B2020/1267 ,  G11B2020/1287 ,  G11B2020/1292 ,  G11B2220/20 ,  G11B2220/2525 ,  G11B7/0045 ,  G11B7/005 ,  G11B7/0904

摘要： A magneto-optical disk 1 has a track, wherein one of the sidewalls (sidewall 4) of a groove 2 is wobbled by a wobble signal, and is provided with a notch 5 in the track having a different frequency from the wobble signal. The absolute position of the magneto-optical disk 1 is detected with a sample bit stored by the notch 5 of the track, and an information bit is stored with a recording/reproducing clock synchronizing with that position. By forming the notch 5 in this manner, information can always be recorded at the same information bit position, regardless of how many times information is rewritten. Therefore, a gap area and a buffer area, which have conventionally been essential, are not needed on the optical disk. Consequently, it is possible to use a recording area effectively.

摘要翻译： 磁光盘1具有轨道，其中凹槽2的侧壁（侧壁4）中的一个由摆动信号摆动，并且在轨道中设置有与摆动信号不同频率的凹口5。 磁光盘1的绝对位置由轨道的槽口5存储的采样位检测，并且与该位置同步的记录/再现时钟存储信息位。 通过以这种方式形成切口5，信息总是可以记录在相同的信息位位置，而不管信息被重写多少次。 因此，在光盘上不需要传统上必需的间隙区域和缓冲区域。 因此，可以有效地使用记录区域。

公开(公告)号：US5715217A

公开(公告)日：1998-02-03

申请号：US637545

申请日：1996-04-25

申请人： Hiroshi Fuji

发明人： Hiroshi Fuji

IPC分类号： G11B7/24 ,  G11B7/007 ,  G11B7/09 ,  G11B7/095

CPC分类号： G11B7/24082 ,  G11B7/007 ,  G11B7/0904 ,  G11B7/0945 ,  G11B7/094

摘要： An optical disk is provided with grooves, which have first and second regions. A first side wall of a groove in the first region is wabbled, while a second side wall of the groove, which is opposite to the wabbled side wall in the first region, is wabbled in the second region. The tracking of a light beam is carried out with respect to the first and second regions, so that first amplitude of a first wabble signal and second amplitude of a second wabble signal, which are contained in a tracking error signal, are obtained. The first and second amplitude are compared, and a correction signal which varies depending on the difference in the amplitude is given to the tracking error signal, so that the first and the second amplitude are corrected to be substantially equal. Thus, it is possible to correct a deviation caused by an error in conditioning optical elements, an aberration of optical elements, and a change due to aging.

摘要翻译： 光盘设置有具有第一和第二区域的凹槽。 第一区域中的槽的第一侧壁是摇摆的，而与第一区域中的摆动侧壁相对的槽的第二侧壁在第二区域中摆动。 相对于第一和第二区域执行光束的跟踪，使得获得包含在跟踪误差信号中的第一摆动信号的第一幅度和第二摆动信号的第二幅度。 对第一和​​第二幅度进行比较，并且对跟踪误差信号给出根据幅度差异而变化的校正信号，使得第一和第二幅度被校正为基本相等。 因此，可以校正由调节光学元件的误差，光学元件的像差和由于老化引起的变化引起的偏差。

公开(公告)号：US5604725A

公开(公告)日：1997-02-18

申请号：US357203

申请日：1994-12-13

申请人： Hiroshi Fuji

发明人： Hiroshi Fuji

IPC分类号： G11B7/013 ,  H03M5/14 ,  G11B5/09

CPC分类号： G11B7/013 ,  H03M5/14

摘要： A coding method for an information recording/reproduction apparatus and a recording medium, comprising the step of setting a second code bit of a second track adjacent to a first code bit of a first track in the direction perpendicular to a track to "0" or "nonmark" when the first code bit of the first track is "1" or "record mark.", wherein a first coding rule for obtaining a first code bit on an odd track and a second coding rule for obtaining a second code bit on an even track are used and a second bit adjacent to a first bit in the direction perpendicular to a track is set to "0" or "nonmark" by the second coding rule when the first code bit is "1" or "record mark".

摘要翻译： 一种用于信息记录/再现装置和记录介质的编码方法，包括以下步骤：将与第一轨道的第一码位相邻的第二轨道的第二码位设置成与轨道垂直的方向为“0”，或 当第一轨道的第一码位为“1”或“记录标记”时，“非标记”，其中用于获得奇数轨道上的第一码位的第一编码规则和用于获得第二码位的第二编码规则 当第一码位为“1”或“记录标记”时，使用偶数轨道并且在垂直于轨道的方向上与第一位相邻的第二位被第二编码规则设置为“0”或“非标记” 。