公开(公告)号：US5517472A

公开(公告)日：1996-05-14

申请号：US222363

申请日：1994-04-04

申请人： Norio Miyatake ,  Hidetsugu Kawabata ,  Kiyoshi Uchida ,  Yasumori Hino ,  Teruyuki Takizawa ,  Tohru Nakamura

发明人： Norio Miyatake ,  Hidetsugu Kawabata ,  Kiyoshi Uchida ,  Yasumori Hino ,  Teruyuki Takizawa ,  Tohru Nakamura

IPC分类号： G11B11/105 ,  G11B19/02 ,  G11B19/12 ,  G11B7/08 ,  G11B5/187 ,  G11B11/10

CPC分类号： G11B19/12 ,  G11B11/10534 ,  G11B11/10552 ,  G11B11/1058 ,  G11B11/10597 ,  G11B19/02

摘要： A sliding part of a magnetic-field generator is configured to slide above and spaced from a surface of a loaded magneto-optical disk in a floating manner. A magnetic-field generating part, which provides a magnetic field to the magneto-optical disk, includes a magnetic pole disposed on a side of the sliding part such that the magnetic pole and the sliding part are positioned adjacent to each other in a radial direction of the surface of the loaded magneto-optical disk and such that the magnetic pole is located closer to a periphery of the magneto-optical disk than the sliding part. An entire flat end surface of the magnetic pole confronting the surface of the magneto-optical disk is generally parallel to and recedes from a slide surface of the sliding part such that the entire flat end surface is spaced further from the surface of the magneto-optical disk than the slide surface of the sliding part.

摘要翻译： 磁场发生器的滑动部分构造成以浮动的方式在加载的磁光盘的表面上方并与之隔开。 向磁光盘提供磁场的磁场产生部包括设置在滑动部的一侧的磁极，使得磁极和滑动部在径向方向上彼此相邻地定位 并且使得磁极位于比滑动部更靠近磁光盘的周边的位置。 面对磁光盘表面的磁极的整个平坦端面通常平行于滑动部分的滑动表面并从后退，使得整个平坦端面与磁光表面相距较远 盘比滑动部分的滑动面。

公开(公告)号：US5422874A

公开(公告)日：1995-06-06

申请号：US118232

申请日：1993-09-09

申请人： Masahiro Birukawa ,  Norio Miyatake ,  Yuuichi Fukamachi ,  Yoshihiko Kudoh ,  Yasumori Hino

发明人： Masahiro Birukawa ,  Norio Miyatake ,  Yuuichi Fukamachi ,  Yoshihiko Kudoh ,  Yasumori Hino

IPC分类号： G11B11/10 ,  G11B7/007 ,  G11B7/24 ,  G11B7/26 ,  G11B11/105 ,  G11B20/12 ,  G11B27/19 ,  G11B27/30

CPC分类号： G11B11/10584 ,  G11B11/10515 ,  G11B11/10563 ,  G11B11/10578 ,  G11B20/1217 ,  G11B27/19 ,  G11B27/3027 ,  G11B7/00718 ,  G11B7/00745 ,  G11B7/261

摘要： The present invention relates to a magneto-optical recording medium, in which are provided at least a reading layer and a writing layer on a substrate. A track guide groove is formed in the medium so as to include in-groove portions and on-land portions. Pits are formed on a portion along the track longitudinally adjacent where an in-groove portion and where no guide groove exists. Pits are also formed in an on-land portion between the in-groove portions of the track guide groove. Only a portion where a temperature has been raised by optical beam irradiation is read, while a domain of a writing layer is copied on the writing layer, whereby a writing/reading operation can be effected with narrower track pitches.

摘要翻译： 磁光记录介质技术领域本发明涉及一种磁光记录介质，其中至少在基板上提供读取层和写层。 在介质中形成轨道引导槽，以便包括槽内部分和陆上部分。 凹坑形成在沿着纵向相邻的轨道的一部分上，其中凹槽部分并且不存在引导槽。 凹坑也形成在轨道引导槽的槽内部之间的陆上部分。 只读取通过光束照射而升高了温度的部分，同时在写入层上复制写入层的区域，从而能够以更窄的轨道间距进行写入/读取操作。

公开(公告)号：US5341359A

公开(公告)日：1994-08-23

申请号：US946525

申请日：1992-09-16

申请人： Masahiro Birukawa ,  Norio Miyatake ,  Yasumori Hino

发明人： Masahiro Birukawa ,  Norio Miyatake ,  Yasumori Hino

IPC分类号： G11B11/105 ,  G11B19/04 ,  G11B20/18 ,  G11B27/36 ,  G11B11/10

CPC分类号： G11B20/1883 ,  G11B11/10595 ,  G11B19/04 ,  G11B27/36 ,  G11B2220/20

摘要： A magneto-optical recording and/or reading-out apparatus can record and read out information on and from a magneto-optical recording medium by the use of a laser beam. The apparatus includes a reflected beam detector, a comparator operatively coupled with the reflected beam detector, and a judgment unit operatively coupled with the comparator. The reflected beam detector detects the quantity of a laser beam reflected from the magneto-optical recording medium during recording. The comparator compares the quantity of the reflected laser beam with at least one reference value during the recording, thereby detecting an abnormality in the reflected laser beam. The judgment unit judges whether an area of the magneto-optical recording medium which has caused the abnormality is practically usable, in accordance with an output from the comparator and data to be recorded on this area.

摘要翻译： 磁光记录和/或读出装置可以通过使用激光束在磁光记录介质上记录和读出信息。 该装置包括反射光束检测器，与反射光束检测器可操作耦合的比较器，以及与比较器可操作耦合的判断单元。 反射光束检测器检测在记录期间从磁光记录介质反射的激光束的量。 比较器在记录期间将反射激光束的量与至少一个基准值进行比较，从而检测反射的激光束的异常。 判断单元根据来自比较器的输出和要记录在该区域上的数据判断是否实际上可以使用引起异常的磁光记录介质的区域。

公开(公告)号：US5247495A

公开(公告)日：1993-09-21

申请号：US657819

申请日：1991-02-20

申请人： Masahiro Birukawa ,  Norio Miyatake ,  Yasumori Hino

发明人： Masahiro Birukawa ,  Norio Miyatake ,  Yasumori Hino

IPC分类号： G11B11/10 ,  G11B7/00 ,  G11B7/0055 ,  G11B7/007 ,  G11B7/30 ,  G11B11/105

CPC分类号： G11B11/10597 ,  G11B11/10517 ,  G11B11/10528

摘要： A magneto-optical disc according to the present invention has separate regions located between mutually adjacent recording tracks. In the separate regions, magneto-optical signals are impossible to record or smaller than the recording tracks. Therefore, it is possible to maintain a low erasing power that is constant even when conditions such as off-tracking, defocusing and changes of operating temperature occur. The present invention provides a magneto-optical disc, further, which in a light modulating system restricts the recording domain so as to improve the number of times the disc can be rewritten, providing a magneto-optical disk that is highly compatible with different drives. Further, the magneto-optical disk according to the present invention is provided such that a residual signal is not caused if recording power during overwriting is lower than the previous recording power in a magnetic modulating system, further improving compatibility.

摘要翻译： 根据本发明的磁光盘具有位于相互相邻的记录轨道之间的分离区域。 在单独的区域中，磁光信号不可能记录或小于记录轨道。 因此，即使在诸如偏离跟踪，散焦和工作温度的变化的条件出现的情况下，也可以保持不变的擦除功率。 本发明还提供一种磁光盘，其进一步在光调制系统中限制记录域，以便提高光盘可重写的次数，提供与不同驱动器高度兼容的磁光盘。 此外，根据本发明的磁光盘被提供为使得在重写期间的记录功率低于磁调制系统中的先前记录功率时不会引起残留信号，从而进一步提高兼容性。

公开(公告)号：US5202863A

公开(公告)日：1993-04-13

申请号：US757461

申请日：1991-09-10

申请人： Norio Miyatake ,  Hidetsugu Kawabata ,  Kiyoshi Uchida ,  Yasumori Hino ,  Teruyuki Takizawa ,  Tohru Nakamura

发明人： Norio Miyatake ,  Hidetsugu Kawabata ,  Kiyoshi Uchida ,  Yasumori Hino ,  Teruyuki Takizawa ,  Tohru Nakamura

IPC分类号： G11B11/105 ,  G11B19/02 ,  G11B19/12

CPC分类号： G11B19/12 ,  G11B11/10534 ,  G11B11/10552 ,  G11B11/1058 ,  G11B11/10597 ,  G11B19/02

摘要： A magneto-optical disk unit has a first magnetic-field generator for generating a magnetic field corresponding to a frequency in a recording signal frequency band and a second magnetic-field generator for generating DC magnetic fields of both north-seeking and south-seeking poles in a non-contact manner with a loaded magneto-optical disk. The first magnetic-field generator has a slider part for sliding over a loaded magneto-optical disk in a floating manner using an aerodynamic effect. The unit further has a transfer driver for moving the first and second magnetic-field generators in a direction parallel to the loaded magneto-optical disk and a rotary plate for vertically moving the first magnetic-field generator. The unit also has a disk judging circuit for judging whether the loaded magneto-optical disk is of a magnetic-field-modulation overwritable type (first type) or an erase-operation-required type (second type), and a controller for controlling the rotary plate to bring the first magnetic-field generator into contact with the loaded disk when this disk is of the first type and to keep it raised from the disk when this disk is of the second type. The second magnetic-field generator is used when the disk is judged to be of the second type.

摘要翻译： 磁光盘单元具有用于产生对应于记录信号频带中的频率的磁场的第一磁场发生器和用于产生北向和北极两极的直流磁场的第二磁场发生器 以与负载的磁光盘非接触的方式。 第一磁场发生器具有用于使用空气动力学效应以浮动方式在加载的磁光盘上滑动的滑块部分。 该单元还具有用于使第一和第二磁场发生器沿平行于装载的磁光盘的方向移动的转移驱动器和用于垂直移动第一磁场发生器的旋转板。 该单元还具有用于判断装载的磁光盘是磁场调制可重写类型（第一类型）还是擦除操作需要类型（第二类型）的盘判断电路，以及控制器 旋转板，当该磁盘是第一类型时，使第一磁场发生器与装载的磁盘接触，并且当该磁盘是第二类型时将其保持从磁盘升起。 当盘被判断为第二种类型时，使用第二磁场发生器。

公开(公告)号：US09244760B2

公开(公告)日：2016-01-26

申请号：US13824152

申请日：2012-08-01

申请人： Keisuke Fujimoto ,  Yasumori Hino

发明人： Keisuke Fujimoto ,  Yasumori Hino

IPC分类号： G11C29/00 ,  H03M13/00 ,  G06F11/10 ,  H03M13/11 ,  G11B20/18 ,  H03M13/41

CPC分类号： G06F11/10 ,  G11B20/1833 ,  G11B2020/185 ,  G11B2220/2537 ,  H03M13/1111 ,  H03M13/1128 ,  H03M13/41

摘要： A control device inputs reliability information on the same data block a plurality of times into a reliability storage memory. A reliability generating device generates a reliability information by performing computation processing based on a stochastic computation by using reliability information generated in the previous cycle that has been saved in the reliability storage memory and reliability information generated in the present cycle, and saves the reliability information generated in the reliability storage memory when the decoding is performed by using reliability information on the data block the same as that in the previous cycle. A column processing computation device computes a column processing output value by using the reliability information generated and saved in the reliability storage memory and a row processing output value.

摘要翻译： 控制装置将相同数据块上的可靠性信息多次输入到可靠性存储存储器中。 可靠性生成装置通过使用保存在可靠性存储存储器中的上一个循环中生成的可靠性信息和本循环中生成的可靠性信息，通过进行基于随机运算的计算处理来生成可靠性信息，并且保存生成的可靠性信息 在通过使用与前一周期相同的数据块上的可靠性信息来执行解码的可靠性存储存储器中。 列处理计算装置通过使用生成并保存在可靠性存储存储器中的可靠性信息和行处理输出值来计算列处理输出值。

公开(公告)号：US08335143B2

公开(公告)日：2012-12-18

申请号：US13204384

申请日：2011-08-05

申请人： Atsushi Nakamura ,  Kenji Fujiune ,  Yasumori Hino

发明人： Atsushi Nakamura ,  Kenji Fujiune ,  Yasumori Hino

IPC分类号： G11B7/00

CPC分类号： G11B20/10009 ,  G11B20/10046 ,  G11B20/1816 ,  G11B2220/218 ,  G11B2220/2541

摘要： A method for inspecting an optical information storage medium includes the steps of: irradiating the storage medium with a laser beam and rotating the medium by a constant linear velocity control technique by reference to the radial location at which the laser beam forms a spot on the medium; changing the rotational velocities according to the radial location on the medium between at least two linear velocities that include a first linear velocity Lv1 and a second linear velocity Lv2 higher than the first linear velocity Lv1; generating a focus error signal and/or a tracking error signal based on the light reflected from the medium; performing a focus control and/or a tracking control on the laser beam that irradiates the medium based on the focus and/or tracking error signal(s); and passing the branched outputs of control loops for the focus and/or tracking error signal(s) through predetermined types of frequency band-elimination filters for the focus and/or tracking error signal(s) to obtain residual errors of the focus and/or tracking error signal(s) and comparing the residual errors to predetermined reference values.

摘要翻译： 一种用于检查光学信息存储介质的方法包括以下步骤：通过参考激光束在介质上形成点的径向位置，通过恒定的线速度控制技术照射存储介质和激光介质 ; 根据包括第一线速度Lv1和高于第一线速度Lv1的第二线速度Lv2的至少两个线性速度，根据介质上的径向位置改变旋转速度; 基于从介质反射的光产生聚焦误差信号和/或跟踪误差信号; 对基于焦点和/或跟踪误差信号照射介质的激光束进行聚焦控制和/或跟踪控制; 以及通过用于焦点和/或跟踪误差信号的预定类型的频带滤波器使用于聚焦和/或跟踪误差信号的控制回路的分支输出通过，以获得焦点和/ 或跟踪误差信号，并将剩余误差与预定参考值进行比较。

公开(公告)号：US08233362B2

公开(公告)日：2012-07-31

申请号：US12719912

申请日：2010-03-09

申请人： Kiyotaka Ito ,  Mamoru Shoji ,  Yasumori Hino ,  Atsushi Nakamura ,  Naoyasu Miyagawa ,  Motoshi Ito

发明人： Kiyotaka Ito ,  Mamoru Shoji ,  Yasumori Hino ,  Atsushi Nakamura ,  Naoyasu Miyagawa ,  Motoshi Ito

IPC分类号： G11B7/00

CPC分类号： G11B7/00736 ,  G11B7/00456

摘要： The present invention provides a measure for getting read/write control information stored within a space of a predetermined size in a format that ensures compatibility with media of a lower order or an older generation even if the size of the read/write control information increases significantly as the storage densities of information storage media rise in the near future. On an information storage medium, a data sequence is writable as a combination of marks and spaces. The medium has at least one information storage layer, which has an information storage area to store information and a control information area for use to perform a read/write operation on the at least one information storage layer. The control information area stores at least one set of control information, which includes a first kind of write pulse information including information to be used as a reference value and a second kind of write pulse information including information to be used as an offset value. The size of the offset value is at least a half as large as that of the reference value.

摘要翻译： 本发明提供一种用于获得存储在预定大小的空间内的读/写控制信息的措施，即使读/写控制信息的大小显着增加，也可以确保与较低级别或较老版本的媒体兼容的格式 随着信息存储媒体的存储密度在不久的将来上升。 在信息存储介质上，作为标记和空格的组合可写入数据序列。 介质具有至少一个信息存储层，其具有用于存储信息的信息存储区域和用于对至少一个信息存储层执行读/写操作的控制信息区域。 控制信息区域存储至少一组控制信息，该组控制信息包括包括要用作参考值的信息的第一种写入脉冲信息和包括要用作偏移值的信息的第二种写入脉冲信息。 偏移值的大小至少是参考值的一半。

公开(公告)号：US08228774B2

公开(公告)日：2012-07-24

申请号：US12559740

申请日：2009-09-15

申请人： Kousei Sano ,  Yoshiaki Komma ,  Yasumori Hino

发明人： Kousei Sano ,  Yoshiaki Komma ,  Yasumori Hino

IPC分类号： G11B7/242 ,  G11B3/70 ,  G11B7/24 ,  G11B7/00 ,  B32B3/02 ,  G01B11/28 ,  G01N21/55

CPC分类号： G11B7/0037 ,  G01B11/06 ,  G11B2007/0013

摘要： An optical information medium measurement method measures a degree of modulation in an optical information medium of a multilayered structure having a plurality of information layers. The method includes measuring the modulation degree of each layer of the optical information medium, obtaining a thickness between layers of the optical information medium, obtaining a reflectance of each layer of the optical information medium, and converting the modulation degree of each layer. The modulation degree is measured based on a value indicative of the thickness between layers, and a value indicative of the reflectance of each layer.

摘要翻译： 光信息介质测量方法测量具有多个信息层的多层结构的光信息介质中的调制度。 该方法包括测量光信息介质的各层的调制度，获得光信息介质的层之间的厚度，获得光信息介质的各层的反射率，以及转换各层的调制度。 基于表示层之间的厚度的值和表示各层的反射率的值来测量调制度。

公开(公告)号：US08189452B2

公开(公告)日：2012-05-29

申请号：US13001192

申请日：2010-04-14

申请人： Yoshiaki Komma ,  Joji Anzai ,  Masahiko Tsukuda ,  Yasumori Hino

发明人： Yoshiaki Komma ,  Joji Anzai ,  Masahiko Tsukuda ,  Yasumori Hino

IPC分类号： G11B3/70 ,  G11B7/24 ,  G11B5/84 ,  G11B7/26

CPC分类号： G11B7/24038 ,  G11B7/0037 ,  G11B7/08511 ,  G11B7/26 ,  G11B2007/0013 ,  Y10T29/49

摘要： Shape-wise thicknesses of a cover layer and first through (N−1)th intermediate layers of an optical recording medium having refractive indexes nr1, nr2 are converted into thicknesses t1, t2 of the respective layers having a predetermined refractive index which makes a divergent amount equal to a divergent amount of a light beam resulting from the thicknesses tr1, tr2, a difference DFF between the sum of a thickness “ti” through a thickness “tj”, and the sum of a thickness “tk” through a thickness “tm” is set to 1 μm or more (where i, j, k, and m are each any positive integer satisfying i≦j≦k≦m≦N), and the thicknesses t1, t2 are calculated by products of a function f(n) expressed by the following formula (1), and the thicknesses tr1, tr2: f(n)=−1.088n3+6.1027n2−12.042n+9.1007  (1) in the formula (1), n=nr1, nr2, . . . , and nrN.

摘要翻译： 具有折射率nr1，nr2的光学记录介质的覆盖层和第一至第（N-1）个中间层的形状厚度被转换成具有预定折射率的各层的厚度t1，t2，其具有发散性 相当于由厚度tr1，tr2产生的光束的发散量，厚度“ti”与厚度“tj”之和的差DFF与厚度“tk”的厚度之和“ tm“设定为1μm以上（其中，i，j，k和m各自为满足i＆nlE; j＆nlE; k＆nlE; m＆nlE; N）的任何正整数，并且厚度t1，t2由函数f （1）表示的厚度tr1，tr2：f（n）= - 1.088n3 + 6.1027n2-12.042n + 9.1007（1）中，n = nr1，nr2 ，。 。 。 ，和nrN。