-
公开(公告)号：US20050099908A1
公开(公告)日：2005-05-12
申请号：US10950385
申请日：2004-09-28
申请人： Goro Fujita , Kazuhiko Fujiie , Yasuhito Tanaka , Kimihiro Saito , Tetsuhiro Sakamoto , Takeshi Miki
发明人： Goro Fujita , Kazuhiko Fujiie , Yasuhito Tanaka , Kimihiro Saito , Tetsuhiro Sakamoto , Takeshi Miki
CPC分类号： G11B27/24 , G11B7/0053 , G11B7/00718
摘要： The present invention provides an optical disk drive and optical disk playback method, with an improved capability of reading address information from an optical disk having address information recorded thereon by wobbling one of side walls of a recording track, with a wider tilt margin.
摘要翻译： 本发明提供了一种光盘驱动器和光盘播放方法，其具有通过以更宽的倾斜余量摆动记录轨道的一个侧壁而从其上记录有地址信息的光盘读取地址信息的能力。
-
公开(公告)号：US20050201211A1
公开(公告)日：2005-09-15
申请号：US10517604
申请日：2004-05-21
IPC分类号： G11B11/105 , G11B7/09 , G11B11/00
CPC分类号： G11B11/10582 , G11B11/10523 , G11B11/10576 , G11B11/10595
摘要： The present invention is directed to an annealing apparatus adapted for performing anneal processing with respect to a magneto optical recording medium, which comprises a diffraction optical unit (3) for optically separating light beams emitted from a laser light source (1) into first light beams which are the 0 (zero)-th order diffracted light beams and second and third light beams which are the first order diffracted light beams, an object lens (5) for converging the first light beams to irradiate the first light beams thus converged onto magnetic layers of guide grooves or land portions forming both sides of the guide grooves, and for converging the second and third light beams to irradiate the second and third light beams thus converged onto magnetic layers in the vicinity of the boundary portions between guide grooves and land portions, and a biaxial actuator unit (6) for controlling the object lens (5) on the basis of linear characteristic of a first tracking error signal generated on the basis of intensity distribution of light quantities of rays of return light of the first light beams so that the first light beams follow the guide grooves or the land portions.
摘要翻译： 本发明涉及一种用于对磁光记录介质进行退火处理的退火设备，该退火设备包括用于将从激光光源（1）发射的光束光学分离成第一光束的衍射光学单元（3） 它们是作为一级衍射光束的0（零）级衍射光束和第二和第三光束，用于会聚第一光束以照射第一光束的物镜（5），从而会聚到磁 形成导向槽的两侧的引导槽或台面部分的层，并且用于会聚第二和第三光束以照射第二和第三光束，从而会聚在引导槽和焊盘部分之间的边界部分附近的磁性层上 以及用于基于第一跟踪误差符号的线性特性来控制物镜（5）的双轴致动器单元（6） 基于第一光束的光量的光的强度分布产生，使得第一光束跟随引导槽或岸台部分。
-
公开(公告)号：US20080199602A1
公开(公告)日：2008-08-21
申请号：US12148636
申请日：2008-04-21
CPC分类号： G11B11/10582 , G11B11/10517 , G11B11/10584
摘要： A method for manufacturing a magneto-optical recording medium in which reading of recorded information is performed through domain wall displacement in a reproduction layer is provided, in which magnetic separation of groove side-wall portions is performed more reliably; as a result a magneto-optical recording medium with satisfactory recording and reproduction characteristics can be provided. The method is to manufacture a magneto-optical recording medium in which on a substrate 1 having grooves 12 at least a reproduction layer and a recording layer, each of which is formed of magnetic layers, are deposited and recorded information is reproduced through domain wall displacement in the reproduction layer; and the method includes a first annealing process in which, after depositing at least the reproduction layer and recording layer on the substrate 1 on which are formed lands 11 and grooves 12, only side-wall portions 13 between adjacent lands 11 and grooves 12 are irradiated with laser light L1, and a second magnetization annealing process in which regions including adjacent side-wall portions 13 and lands between side-wall portions 13 are irradiated with laser light L2 having a spot diameter greater than the spot diameter of the laser light in the first annealing process, while applying an external magnetic field Hex.
摘要翻译： 提供了一种制造磁光记录介质的方法，其中通过再现层中的畴壁位移进行记录信息的读取，其中槽侧壁部分的磁分离更可靠地进行; 结果，可以提供具有令人满意的记录和再现特性的磁光记录介质。 该方法是制造磁光记录介质，其中在至少具有由磁层形成的再生层和记录层的凹槽12的基板1上沉积，并通过畴壁位移再现记录信息 在复制层; 并且该方法包括第一退火处理，其中在至少将再生层和记录层沉积在其上形成有焊盘11和凹槽12的基板1上之后，仅在相邻焊盘11和槽12之间照射侧壁部分13 激光L 1和第二磁化退火处理，其中包括相邻的侧壁部分13和侧壁部分13之间的区域的区域被照射具有大于激光的光斑直径的光点直径的激光L 2 在第一退火过程中，同时施加外部磁场Hex。
-
4.发明申请公开(公告)号：US20070008832A1
公开(公告)日：2007-01-11
申请号：US10569749
申请日：2004-08-19
IPC分类号： G11B11/00
CPC分类号： G11B11/10582
摘要： A laser beam from an LD 11 is irradiated onto a magnetooptic disk 33 by a predetermined power for a heat treatment. After the heat treatment, the laser beam of a power smaller than the power upon heat treatment is irradiated to the heat-treated area. Reflection light of the laser beam of the small power enters photodetectors 24 and 26 and reflection light amounts of a P wave and an S wave are detected, respectively. A differential detecting circuit 27 detects a level of a magnetooptic signal corresponding to the heat-treated area on the basis of the reflection light amounts of the P wave and the S wave. A controller 28 determines whether or not the magnetooptic signal level detected by the differential detecting circuit 28 lies within a permissible range. If it is out of the range, the power of the laser beam to execute the heat treatment is adjusted and the process of a magnetooptic disk is stopped or a message showing such a fact is displayed, or the like.
摘要翻译： 来自LD11的激光束以预定的功率照射在磁光盘33上用于热处理。 在热处理之后，将热处理后的功率小于的功率的激光束照射到热处理区域。 小功率激光束的反射光分别进入光电探测器24和26，分别检测P波和S波的反射光量。 差分检测电路27基于P波和S波的反射光量来检测与热处理区域对应的磁光信号的电平。 控制器28确定由差分检测电路28检测的磁光信号电平是否处于容许范围内。 如果超出该范围，则调整执行热处理的激光束的功率，并且停止磁光盘的处理或者显示表示这种事实的消息等。
-
公开(公告)号：US07423939B2
公开(公告)日：2008-09-09
申请号：US10779337
申请日：2004-02-13
CPC分类号： G11B11/10582 , G11B11/10517 , G11B11/10584
摘要： A method for manufacturing a magneto-optical recording medium in which reading of recorded information is performed through domain wall displacement in a reproduction layer is provided, in which magnetic separation of groove side-wall portions is performed more reliably; as a result a magneto-optical recording medium with satisfactory recording and reproduction characteristics can be provided. The method is to manufacture a magneto-optical recording medium in which on a substrate 1 having grooves 12 at least a reproduction layer and a recording layer, each of which is formed of magnetic layers, are deposited and recorded information is reproduced through domain wall displacement in the reproduction layer; and the method includes a first annealing process in which, after depositing at least the reproduction layer and recording layer on the substrate 1 on which are formed lands 11 and grooves 12, only side-wall portions 13 between adjacent lands 11 and grooves 12 are irradiated with laser light L1, and a second magnetization annealing process in which regions including adjacent side-wall portions 13 and lands between side-wall portions 13 are irradiated with laser light L2 having a spot diameter greater than the spot diameter of the laser light in the first annealing process, while applying an external magnetic field Hex.
摘要翻译： 提供了一种制造磁光记录介质的方法，其中通过再现层中的畴壁位移进行记录信息的读取，其中槽侧壁部分的磁分离更可靠地进行; 结果，可以提供具有令人满意的记录和再现特性的磁光记录介质。 该方法是制造磁光记录介质，其中在至少具有由磁层形成的再生层和记录层的凹槽12的基板1上沉积，并通过畴壁位移再现记录信息 在复制层; 并且该方法包括第一退火处理，其中在至少将再生层和记录层沉积在其上形成有焊盘11和凹槽12的基板1上之后，仅在相邻焊盘11和槽12之间照射侧壁部分13 激光L 1和第二磁化退火处理，其中包括相邻的侧壁部分13和侧壁部分13之间的区域的区域被照射具有大于激光的光斑直径的光点直径的激光L 2 在第一退火过程中，同时施加外部磁场H 。
-
公开(公告)号：US07060373B2
公开(公告)日：2006-06-13
申请号：US10765601
申请日：2004-01-27
申请人： Tetsuhiro Sakamoto , Kazutomo Miyata , Teruyuki Ota , Makoto Watanabe , Yasuhito Tanaka , Goro Fujita , Takeshi Miki , Kazuhiko Fujiie
发明人： Tetsuhiro Sakamoto , Kazutomo Miyata , Teruyuki Ota , Makoto Watanabe , Yasuhito Tanaka , Goro Fujita , Takeshi Miki , Kazuhiko Fujiie
IPC分类号： G11B11/105
CPC分类号： G11B11/10584 , G11B11/10515 , G11B11/10593
摘要： A magneto-optical recording medium includes a first magnetic layer (reproduction layer), a second magnetic layer (control layer), a third magnetic layer (blocking layer), and a fourth magnetic layer (recording layer) having respective Curie temperatures TC1, TC2, TC3 and TC4. The Curie temperatures of the layers satisfy the relationships TC1>TC3>TC2 and TC4>TC3. In addition, the magnetic anisotropy of the third magnetic layer Ku3 is greater than that of the second magnetic layer Ku2. A magnetic domain wall in the first magnetic layer in front of the spot irradiated by the reproduction light in the direction of travel is displaced toward the peak temperature portion so that a recorded domain is expanded. Displacement in the spot direction of a domain wall in the first magnetic layer behind the reproduction light spot in the direction of travel is suppressed. The second and third magnetic layers control the magnetic exchange coupling between the first and fourth magnetic layers.
摘要翻译： 磁光记录介质包括具有各自的居里温度T
-
公开(公告)号：US20050041537A1
公开(公告)日：2005-02-24
申请号：US10834196
申请日：2004-04-29
IPC分类号： G11B7/007 , G11B7/09 , G11B11/105 , G11B11/00 , G11B7/00
CPC分类号： G11B11/10595 , G11B7/00736 , G11B7/094 , G11B7/0945 , G11B11/10576
摘要： An optical head is used to record and playback information to and from a magneto-optical storage medium having a displacement layer, a disconnecting layer, and a recording layer that are stacked in this order. The displacement layer is defined by a perpendicular magnetic film that is relatively smaller in domain-wall coercivity and that is greater in domain-wall mobility than the recording layer and the disconnecting layer is defined by a magnetic layer that is lower in Curie temperature than the displacement layer and the recording layer. An optimum offset value is set for causing tracking of the optical head to a recording track provided on the magneto-optical storage medium.
摘要翻译： 光头用于向具有层叠的位移层，隔离层和记录层的磁光存储介质记录和重放信息。 位移层由畴壁矫顽力相对较小的垂直磁性膜定义，并且在畴壁迁移率方面比记录层更大，并且断开层由居里温度较低的磁性层限定 位移层和记录层。 设置最佳偏移值以使光头跟踪到设置在磁光存储介质上的记录轨道。
-
8.发明申请RECORDING DEVICE, RECORDING METHOD, DISC MANUFACTURING METHOD AND OPTICAL DISC RECORDING MEDIUM 失效记录装置，记录方法，光盘制造方法和光盘记录介质公开(公告)号：US20090028014A1
公开(公告)日：2009-01-29
申请号：US11915162
申请日：2006-05-11
申请人： Goro Fujita , Takeshi Miki , Takashi Shimouma , Koji Ashizaki , Masato Nakakura
发明人： Goro Fujita , Takeshi Miki , Takashi Shimouma , Koji Ashizaki , Masato Nakakura
CPC分类号： G11B7/00452 , G11B7/006 , G11B7/268
摘要： An optical disc recording medium is irradiated with laser light having a predetermined laser power to deform an irradiated portion of a substrate into a protruding portion. Since the substrate is deformed so as to have protruding portions, a reflecting layer arranged on the substrate is also deformed so as to have protruding portions. For a pit, the deformed state of a protruding portion allows to obtain a reproduced signal level equivalent to that in each land. For a land, the deformed state of a protruding portion allows to obtain a reproduced signal level equivalent to that in each pit. Since the deformed state of each protruding portion can be controlled on the basis of the power of the laser light for irradiation, pit-to-land deformation and land-to-pit deformation can be performed by setting the laser power. Thus, recorded data can be rewritten on the optical disc recording medium recorded with the data using a combination of pits and lands formed in the substrate.
摘要翻译： 用具有预定激光功率的激光照射光盘记录介质，使基片的照射部分变形为突出部分。 由于基板变形以具有突出部分，所以布置在基板上的反射层也变形以具有突出部分。 对于凹坑，突出部分的变形状态允许获得与每个平台相同的再现信号电平。 对于陆地，突出部分的变形状态允许获得与每个坑中相同的再现信号电平。 由于可以基于用于照射的激光的功率来控制每个突出部分的变形状态，所以可以通过设置激光功率来进行凹坑到地面变形和地 - 坑变形。 因此，可以使用在基板中形成的凹坑和平台的组合，在记录有数据的光盘记录介质上重写记录数据。
-
公开(公告)号：US20080002530A1
公开(公告)日：2008-01-03
申请号：US11890617
申请日：2007-08-07
申请人： Takeshi Miki , Goro Fujita
发明人： Takeshi Miki , Goro Fujita
IPC分类号： G11B7/24
CPC分类号： G11B11/10584 , G11B7/24076 , G11B7/24079 , G11B11/10578
摘要： A magneto-optical recording medium in which the inside of grooves formed along recording tracks is a signal recording area in groove recording, and the domain wall displacement detection method is employed; and a curvature radius R1, in the cross section perpendicular to the recording tracks, of a shoulder portion of a land separating the grooves that is adjacent to the groove is 30 nm or less and a curvature radius R2, in the cross section perpendicular to the recording tracks, of the inside edge portion of the groove for the recording that is adjacent to the land is 20 nm or more, so that a wide recording power margin can be obtained, the jitter can be improved, and the error rate can also be improved
摘要翻译： 一种磁光记录介质，其中沿着记录轨道形成的凹槽的内部是沟槽记录中的信号记录区域，并且采用畴壁位移检测方法; 并且在垂直于记录轨道的横截面中的曲率半径R 1在分隔与槽相邻的凹槽的区域的台肩部分在30cm以下并且曲率半径R 2在垂直于截面的截面中 与纹间相邻的用于记录的槽的内边缘部分的记录轨迹为20nm以上，从而可以获得宽的记录功率余量，可以提高抖动，并且错误率可以 也得到改善
-
10.发明授权Recording device, recording method, disc manufacturing method and optical disc recording medium 失效记录装置，记录方法，盘制造方法和光盘记录介质公开(公告)号：US08159911B2
公开(公告)日：2012-04-17
申请号：US11915162
申请日：2006-05-11
申请人： Goro Fujita , Takeshi Miki , Takashi Shimouma , Koji Ashizaki , Masato Nakakura
发明人： Goro Fujita , Takeshi Miki , Takashi Shimouma , Koji Ashizaki , Masato Nakakura
IPC分类号： G11B5/00
CPC分类号： G11B7/00452 , G11B7/006 , G11B7/268
摘要： An optical disc recording medium is irradiated with laser light having a predetermined laser power to deform an irradiated portion of a substrate into a protruding portion. Since the substrate is deformed so as to have protruding portions, a reflecting layer arranged on the substrate is also deformed so as to have protruding portions. For a pit, the deformed state of a protruding portion allows to obtain a reproduced signal level equivalent to that in each land. For a land, the deformed state of a protruding portion allows to obtain a reproduced signal level equivalent to that in each pit. Since the deformed state of each protruding portion can be controlled on the basis of the power of the laser light for irradiation, pit-to-land deformation and land-to-pit deformation can be performed by setting the laser power. Thus, recorded data can be rewritten on the optical disc recording medium recorded with the data using a combination of pits and lands formed in the substrate.
摘要翻译： 用具有预定激光功率的激光照射光盘记录介质，使基片的照射部分变形为突出部分。 由于基板变形以具有突出部分，所以布置在基板上的反射层也变形以具有突出部分。 对于凹坑，突出部分的变形状态允许获得与每个平台相同的再现信号电平。 对于陆地，突出部分的变形状态允许获得与每个坑中相同的再现信号电平。 由于可以基于用于照射的激光的功率来控制每个突出部分的变形状态，所以可以通过设置激光功率来进行凹坑到地面变形和地 - 坑变形。 因此，可以使用在基板中形成的凹坑和平台的组合，在记录有数据的光盘记录介质上重写记录数据。
-
-
-
-
-
-
-
-
-
搜索结果
79 条记录 (耗时 0.027 秒)
