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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。
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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。
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3.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。
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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。
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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 。
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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
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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。
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公开(公告)号：US07075881B2
公开(公告)日：2006-07-11
申请号：US10173043
申请日：2002-06-18
申请人： Goro Fujita , Tetsuhiro Sakamoto
发明人： Goro Fujita , Tetsuhiro Sakamoto
CPC分类号： G11B7/126 , G11B7/00 , G11B7/0045
摘要： A signal recording/playback apparatus includes a recording data converter. The recording data converter converts on a data pattern having a large influence on adjacent tracks on an optical disk, and outputs the converted data to an optical pickup. Specifically, by performing a data converting process in which, for a data pattern having a predetermined length of at least consecutive bits having identical values, part of the bits is inverted based on a conversion table, the recording data converter compensates a recording operation. Alternatively, instead of inverting the bits, by controlling the output power and pulse width of a laser, the recording operation is compensated. The signal recording/playback apparatus includes a played-back data converter. In the data playback mode of the signal recording/playback apparatus, the data converted by the recording data converter is identified and decoded into the original data by the played-back data converter. The played-back data converter outputs the original data.
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公开(公告)号：US07972673B2
公开(公告)日：2011-07-05
申请号：US11552816
申请日：2006-10-25
IPC分类号： B32B3/02
CPC分类号： G11B20/00688 , G11B7/0053 , G11B7/259 , G11B20/00086 , G11B20/00115 , G11B20/00594 , G11B20/10 , G11B2220/218 , G11B2220/2541 , Y10T428/21
摘要： An optical recording medium is provided. The optical recording medium includes at least a reflective film and a cover layer on a substrate; main data by a combination of pit and land are recorded on the substrate; a write-once recording is made to be possible on the reflective film by irradiating a laser light; sub-data are recorded by a mark that is formed by the irradiation of laser light for the write-once recording with respect to the reflective film; a reproducing signal level at portion where said mark is formed increases for the land of specified length; the mark by which the reproduced level decreases at the portion where the mark is formed is formed for an optical disc recording medium manufactured by physical copy; the reflective film is composed of an Ag-alloy film of Ag100-xXx(0
摘要翻译： 提供光记录介质。 光记录介质至少包括反射膜和基底上的覆盖层; 通过凹坑和焊盘的组合的主要数据被记录在基板上; 通过照射激光使反射膜上的一次写入记录成为可能; 子数据由相对于反射膜的一次写入记录的激光照射形成的标记记录; 在所述标记形成的部分处的再现信号电平对于规定长度的地面增加; 对于通过物理复制制造的光盘记录介质，形成在形成标记部分时再现电平降低的标记; 反射膜由Ag100-xXx（0
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10.发明授权Optical recording disk having land and groove wobbled at outer circumference side 失效具有在外周侧摆动的平台和凹槽的光记录盘公开(公告)号：US07038998B2
公开(公告)日：2006-05-02
申请号：US10220266
申请日：2002-01-09
申请人： Goro Fujita , Tetsuhiro Sakamoto
发明人： Goro Fujita , Tetsuhiro Sakamoto
IPC分类号： G11B7/24
CPC分类号： G11B27/24 , G11B7/00 , G11B7/007 , G11B7/261 , G11B7/263 , G11B27/19 , G11B2220/20 , G11B2220/2529
摘要： An optical recording medium having a wobble desirably arranged in a production process when having wobble at part of interfaces of lands and grooves is provided. An optical recording medium comprising an approximately disk-shaped disk substrate 15, formed in its surface with trenches 15a and having projections and recesses divided for every track region by the trenches 15a, on which are stacked an optical recording layer 16 having relief shapes corresponding with the trenches 15a and a protection film 17 and of a format where both regions of the projections (lands L) and the recesses (grooves G) are used as recording regions etc., wherein wobble W for providing clock information or address information is formed, between a pair of facing side walls forming each trench 15a, in a side wall portion at an inner circumferential side of the disk substrate 15 when seen from the recess (groove G) and at an outer circumferential side of the disk substrate 15 when seen from the projection (land L).
摘要翻译： 本发明提供一种光盘记录介质，其特征在于，具有摇摆的光盘记录媒体，其特征在于，具有摆动在轨迹和槽的一部分界面的制造工序。 一种光学记录介质，包括近似圆盘形的盘基片15，其表面上形成有沟槽15a，并且具有通过沟槽15a分隔每个轨道区域的突起和凹陷，叠层有具有浮雕形状的光学记录层16 对应于沟槽15a和保护膜17以及其中使用两个突起（区域L）和凹槽（槽G）的两个区域作为记录区域等的格式，其中摆动W用于提供时钟信息或地址信息 形成在从凹部（槽G）观察的盘基板15的内周侧的侧壁部和盘基板的外周侧之间的形成各沟槽15a的一对相对侧壁之间 15从投影（L）看。
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