公开(公告)号：US20060098564A1

公开(公告)日：2006-05-11

申请号：US11052808

申请日：2005-02-09

申请人： Toshinori Sugiyama ,  Reiji Tamura ,  Tamotsu Iida ,  Yoshikazu Mitsui

发明人： Toshinori Sugiyama ,  Reiji Tamura ,  Tamotsu Iida ,  Yoshikazu Mitsui

IPC分类号： G11B7/24

CPC分类号： G11B7/24082 ,  G11B7/0053

摘要： An information-recording medium of write once or rewritable type designed to have narrow tracks is provided, in which the wobble signal amplitude is scarcely fluctuated by crosstalk. The medium includes recording tracks formed in a spiral form and meandering at a predetermined wobble cycle T, and a plurality of zones constituting each of the recording tracks, each of the zones having a principal area formed to have a predetermined wobble phase. A relationship of T>80b holds between the wobble cycle T and a channel bit length b of recording data. The wobble phase of one of the recording tracks is adjusted so that an average phase difference d is d>π/2 between the wobble phase in the principal area in the zone and a wobble phase of an area in the recording track disposed adjacently on an inner circumferential side or an outer circumferential side of the principal area, in relation to all of the recording tracks disposed adjacently in the radial direction.

摘要翻译： 提供设计成具有窄轨迹的一次写入或可重写类型的信息记录介质，其中摆动信号幅度几乎不会由于串扰而波动。 介质包括以螺旋形式形成的记录轨道，并且以预定的摆动周期T曲折，以及构成每个记录轨道的多个区域，每个区域具有形成为具有预定摆动相位的主区域。 在摆动周期T和记录数据的通道位长度b之间保持T> 80b的关系。 调整记录轨道之一的摆动相位，使得平均相位差d在该区域中的主要区域中的摆动相位和相邻设置的记录轨道中的区域的摆动相位之间的d>π/ 2 相对于在径向方向上相邻设置的所有记录轨道，主区域的内周侧或外周侧。

公开(公告)号：USRE37719E1

公开(公告)日：2002-05-28

申请号：US08267550

申请日：1994-06-21

申请人： Toshinori Sugiyama ,  Tetsurou Ikegaki ,  Mitsuru Shimizu ,  Yoshitane Tuburaya

发明人： Toshinori Sugiyama ,  Tetsurou Ikegaki ,  Mitsuru Shimizu ,  Yoshitane Tuburaya

IPC分类号： B32B302

CPC分类号： G11B11/10586 ,  B29C45/263 ,  G11B7/0033 ,  G11B7/24 ,  G11B7/2533 ,  G11B7/26 ,  G11B2007/24304

摘要： A transparent substrate and a method of producing the same suitable especially for an optical system for an optical data recording medium using a linearly polarized light as a data reading light such as magneto-optical recording medium drive unit and an optical data recording medium for reading data using a linearly polarized light.

摘要翻译： 一种透明基板及其制造方法，特别适用于使用线偏振光作为数据读取光的光学数据记录介质的光学系统，例如磁光记录介质驱动单元和用于读取数据的光学数据记录介质 使用线偏振光。

公开(公告)号：US06366541B1

公开(公告)日：2002-04-02

申请号：US09685137

申请日：2000-10-11

申请人： Satoru Ohnuki ,  Toshinori Sugiyama ,  Masafumi Yoshihiro ,  Tsuyoshi Maro

发明人： Satoru Ohnuki ,  Toshinori Sugiyama ,  Masafumi Yoshihiro ,  Tsuyoshi Maro

IPC分类号： G11B1100

CPC分类号： G11B7/252 ,  B82Y10/00 ,  G11B7/122 ,  G11B7/24 ,  G11B7/2534 ,  G11B7/254 ,  G11B7/2585 ,  G11B11/10534 ,  G11B11/10554 ,  G11B11/1058 ,  G11B11/10584 ,  G11B2007/24306 ,  G11B2007/25417 ,  G11B2007/2571 ,  G11B2007/25713

摘要： A magneto-optical recording medium comprises a protective layer having a self-lubricating property formed at an uppermost layer on a side opposite to a substrate wherein a recording or reproducing light beam comes into a side of the protective layer. The thickness and the refractive index of the protective layer are selected under predetermined conditions depending on whether or not evanescent light is transmitted through the protective layer. It is possible to perform high density recording and reproduction thereof by utilizing the evanescent light. A protective layer having a self-lubricating property may be also formed on a bottom surface of an optical head opposing to the optical recording medium. Even when the optical head contacts with the surface of the optical recording medium, the sliding scratch scarcely occurs, because the optical head smoothly glides on the recording medium surface. It is possible to reduce the influence of multiple interference of light which would be otherwise caused in an air layer existing between the optical recording medium and the optical head, and it is possible to suppress variation in reproduced signal intensity.

摘要翻译： 磁光记录介质包括具有自润滑性的保护层，该保护层形成在与衬底相反的一侧的最上层，其中记录或再现光束进入保护层的一侧。 保护层的厚度和折射率根据是否通过保护层透过的预定条件进行选择。 可以通过利用ev逝光进行高密度记录和再现。 也可以在与光记录介质相对的光学头的底面上形成具有自润滑性的保护层。 即使当光学头与光学记录介质的表面接触时，由于光学头平滑地滑动在记录介质表面上，几乎不发生滑动刮痕。 可以减少在光记录介质和光头之间存在的空气层中会引起的光的多次干涉的影响，并且可以抑制再现信号强度的变化。

公开(公告)号：US06246640B1

公开(公告)日：2001-06-12

申请号：US09129750

申请日：1998-08-05

申请人： Katsusuke Shimazaki ,  Masafumi Yoshihiro ,  Akito Sakemoto ,  Norio Ohta ,  Osamu Ishizaki ,  Satoru Ohnuki ,  Toshinori Sugiyama ,  Kazuko Ishitsuka

发明人： Katsusuke Shimazaki ,  Masafumi Yoshihiro ,  Akito Sakemoto ,  Norio Ohta ,  Osamu Ishizaki ,  Satoru Ohnuki ,  Toshinori Sugiyama ,  Kazuko Ishitsuka

IPC分类号： G11B1100

CPC分类号： G11B11/10515 ,  G11B11/10502 ,  G11B11/10508 ,  G11B11/1051 ,  G11B11/10521 ,  G11B11/10528 ,  G11B11/1053 ,  G11B11/10534 ,  G11B11/10554 ,  G11B11/10586 ,  G11B11/10595

摘要： On a surface of a transparent substrate 1 having a preformat pattern 2 formed thereon are laminated a first recording layer 4 in which a recording state exists in one different magnetic field region of an applied external magnetic field and a second recording layer 6 in which two recording states exist in magnetic field regions different from that for the first recording layer. As required, dielectric layers 3, 5 and 7, a reflecting layer 8 and a protection layer 9 can be laminated. The 4-valued recording of information becomes possible by assigning information signals “1”, “0”, “3”, and “2” to H0, H1, H2 and H3, respectively.

摘要翻译： 在其上形成有预格式化图案2的透明基板1的表面上层叠有其中记录状态存在于施加的外部磁场的一个不同磁场区域中的第一记录层4和其中两个记录 状态存在于与第一记录层不同的磁场区域中。 根据需要，可以层压电介质层3,5和7，反射层8和保护层9。 分别向H0，H1，H2和H3分配信息信号“1”，“0”，“3”和“2”，信息的4值记录成为可能。

公开(公告)号：US6101153A

公开(公告)日：2000-08-08

申请号：US129745

申请日：1998-08-05

申请人： Katsusuke Shimazaki ,  Masafumi Yoshihiro ,  Akito Sakemoto ,  Norio Ohta ,  Osamu Ishizaki ,  Satoru Ohnuki ,  Toshinori Sugiyama ,  Kazuko Ishitsuka

发明人： Katsusuke Shimazaki ,  Masafumi Yoshihiro ,  Akito Sakemoto ,  Norio Ohta ,  Osamu Ishizaki ,  Satoru Ohnuki ,  Toshinori Sugiyama ,  Kazuko Ishitsuka

IPC分类号： G11B11/105 ,  G11B11/00

CPC分类号： G11B11/10515 ,  G11B11/10502 ,  G11B11/1051 ,  G11B11/10528 ,  G11B11/10534 ,  G11B11/10586 ,  G11B11/10508 ,  G11B11/10521 ,  G11B11/1053 ,  G11B11/10554 ,  G11B11/10595

摘要： An optomagnetic recording and reproducing system has been developed which demonstrates superior performance when used with multilayer recording substrates. The system features an optical head and magnetic head disposed opposite to each other on different sides of the recording substrate. The novel magnetic head can either incorporate a number of independently driven subheads, or alternately it can be constructed by placing multiple independently driven windings on a single head. Biasing of the magnetic head can either be performed externally using an external magnet or by providing a bias with one of the windings or sub-heads. The resulting optomagnetic recording and reproducing system is suitable for multi-valued recording of an optomagnetic recording medium.

摘要翻译： 已经开发了一种在使用多层记录基板时表现出优异性能的光磁记录和再现系统。 该系统具有在记录基板的不同侧面彼此相对设置的光学头和磁头。 新颖的磁头可以并入多个独立驱动的子头，或者也可以通过将多个独立驱动的绕组放置在单个头上来构造。 磁头的偏置可以使用外部磁体在外部执行，也可以通过与绕组或副磁头之一提供偏置。 所得的光磁记录和再现系统适用于光磁记录介质的多值记录。

公开(公告)号：US6044041A

公开(公告)日：2000-03-28

申请号：US946066

申请日：1997-10-07

申请人： Osamu Ishizaki ,  Katsusuke Shimazaki ,  Toshinori Sugiyama ,  Masafumi Yoshihiro ,  Susumu Imai

发明人： Osamu Ishizaki ,  Katsusuke Shimazaki ,  Toshinori Sugiyama ,  Masafumi Yoshihiro ,  Susumu Imai

IPC分类号： G11B7/085 ,  G11B5/127 ,  G11B5/17 ,  G11B7/135 ,  G11B11/105 ,  G11B17/04 ,  G11B11/00

CPC分类号： B82Y10/00 ,  G11B11/10532 ,  G11B11/10554 ,  G11B11/10569 ,  G11B11/10578 ,  G11B11/1058 ,  G11B7/1372 ,  G11B11/10565 ,  G11B11/10571 ,  G11B17/0436 ,  G11B5/127 ,  G11B5/17

摘要： A compact recording and reproducing apparatus includes a floating-type head movable in a fan shape in parallel with the surface of a disk recording medium in order to make faster access to the tracks and to record information at a higher density. A slider and a head are secured to the tip of a swing arm capable of fan-shaped swing movement, and a solid immersion lens is used for the head, so that the light beam can be passed along the arm from the fulcrum at the rotating pivot of the swing arm member.

公开(公告)号：US5757492A

公开(公告)日：1998-05-26

申请号：US636804

申请日：1996-04-23

申请人： Teruaki Tokutomi ,  Kyoichi Mori ,  Toshinori Sugiyama

发明人： Teruaki Tokutomi ,  Kyoichi Mori ,  Toshinori Sugiyama

IPC分类号： G01B11/14 ,  G01B9/02

CPC分类号： G01B11/14

摘要： The improved for measuring the flying height of a magnetic head comprises a clear disk made of single-crystal sapphire, a spindle on which said disk is mounted for rotation, a mechanism for loading the magnetic head above one surface of said disk, measuring optics having a photoelectric converter that receives the light produced by interference of reflected light from said one surface of said disk with reflected light from the surface of said magnetic head as a result of application of light to said one surface through the other surface of said disk, and which converts the received interference light to an electric signal by means of said photoelectric converter, and a processing unit for calculating the flying height of said magnetic head in response to said electric signal from said measuring optics.

摘要翻译： 用于测量磁头的飞行高度的改进包括由单晶蓝宝石制成的透明盘，其上安装所述盘旋转的主轴，用于将磁头装载在所述盘的一个表面上的机构，测量具有 光电转换器，其通过从所述磁盘的表面向所述一个表面施加光而通过来自所述磁盘的表面的反射光接收来自所述磁盘的所述一个表面的反射光的干扰产生的光;以及 其通过所述光电转换器将接收到的干涉光转换成电信号;以及处理单元，用于响应于来自所述测量光学器件的所述电信号计算所述磁头的飞行高度。

公开(公告)号：US5598400A

公开(公告)日：1997-01-28

申请号：US580646

申请日：1995-12-29

申请人： Yoshito Tanaka ,  Toshinori Sugiyama

发明人： Yoshito Tanaka ,  Toshinori Sugiyama

IPC分类号： G11B17/04 ,  G11B17/043 ,  G11B23/03 ,  G11B23/033

CPC分类号： G11B17/0436 ,  G11B23/0308

摘要： A disc cartridge is provided with an improved opening/closing slider mechanism which is small in size for positive opening/closing operation for a shutter. The disc cartridge has a front insertion side edge which has a reinforcement portion with guide rail mechanism in proximity thereto. The slider mounted on the guide rail mechanism has a longitudinally extending front face portion to the reverse side of which are integrated so as to form grooves interacting with the guide rail mechanism.

摘要翻译： 盘盒具有改进的开/关滑动器机构，其尺寸小，用于快门的正打开/关闭操作。 盘盒具有前插入侧边缘，其具有靠近其的导轨机构的加强部分。 安装在导轨机构上的滑块具有纵向延伸的前表面部分，其相反侧被整合以形成与导轨机构相互作用的凹槽。

公开(公告)号：US5495467A

公开(公告)日：1996-02-27

申请号：US291573

申请日：1994-08-16

申请人： Yoshito Tanaka ,  Toshinori Sugiyama ,  Yoshitane Tsuburaya

发明人： Yoshito Tanaka ,  Toshinori Sugiyama ,  Yoshitane Tsuburaya

IPC分类号： G11B17/04 ,  G11B17/043 ,  G11B23/03 ,  G11B23/033

CPC分类号： G11B17/0436 ,  G11B23/0308

摘要： A disk cartridge is provided with an improved opening/closing slider mechanism which is small in size for positive opening/closing operation for a shutter. The disk cartridge has a front insertion side edge which has a reinforcement portion with guide rail mechanism in proximity thereto. The slider mounted on the guide rail mechanism has a longitudinally extending front face portion to the reverse side of which are integrated a two-sectioned rear face portion and connecting portion, one of each section being disposed in an end portion of the front face portion, so as to form grooves interacting with the guide rail mechanism.

摘要翻译： 盘盒设置有改进的开/关滑动器机构，其尺寸小，用于快门的正打开/关闭操作。 盘盒具有前插入侧边缘，其具有靠近其的导轨机构的加强部分。 安装在导轨机构上的滑块具有纵向延伸的前表面部分，其反面集成有两部分后表面部分和连接部分，每个部分中的一个设置在前表面部分的端部中， 以形成与导轨机构相互作用的槽。

公开(公告)号：US4720826A

公开(公告)日：1988-01-19

申请号：US840863

申请日：1986-03-18

申请人： Toshinori Sugiyama ,  Mitsuru Shimizu

发明人： Toshinori Sugiyama ,  Mitsuru Shimizu

IPC分类号： G11B7/24 ,  G11B7/26

CPC分类号： G11B7/24097 ,  G11B7/24015 ,  G11B7/26

摘要： An optical recording disc comprising two disc substrates, each in a cylindrical shape having a round center hole, at least one recording layer formed on the surface of at least one said disc substrate, and at least one bonding material layer is formed at an inner rim portion and an outer rim portion of the surface of the said disc substrate, on the surface of which the recording layer is formed, except for at least one portion of the said rim portion of the surface of the disc substrate, wherein the bonding material layer is provided to bond the said two disc substrates togehter, so that the surfaces of the said disc substrates, on the surface of which the recording layer is formed, face each other, thereby a space gap is formed between the said disc substrates, and the said one portion of the said rim portion of the surface of the disc substrate, where the bonding material layer is not formed, can act as a ventilation path, through which the air can pass from the said air gap into the outside of the optical recording disc, and reversely. Accordingly, the said ventilation path enables to prevent the shape of the disc substrate from changing and also enables to prevent the disc substrate from breaking, even if there is a pressure difference between the inside air gap and the outside of the optical recording disc, thereby the optical recording disc can record information correctly on the recording layer.

摘要翻译： 一种光记录盘，包括两个圆盘形基板，每个圆盘形圆柱形具有圆形中心孔，至少一个记录层形成在至少一个所述盘基片的表面上，至少一个接合材料层形成在内边缘 部分和所述盘基片的表面的外边缘部分，除了所述盘基片表面的所述边缘部分的至少一部分之外，其表面上形成有记录层，其中所述接合材料层 被提供以将所述两个盘基片连接起来，使得所述盘基片的表面上形成记录层的表面彼此面对，由此在所述盘基片之间形成间隙，并且 所述盘基片表面的所述边缘部分的一部分，其中未形成所述接合材料层，其可以用作通气路径，空气可以通过所述通气路径从所述气隙传递到 在光学记录盘之外，并且反向。 因此，即使在内部空气间隙和光记录盘的外部之间存在压力差，所述通气路径也能够防止盘基板的形状发生变化，并且还能够防止盘基板破裂，由此 光记录盘可以在记录层上正确地记录信息。