公开(公告)号：US06388954B1

公开(公告)日：2002-05-14

申请号：US09280811

申请日：1999-03-30

申请人： Hiroyuki Awano ,  Katsusuke Shimazaki ,  Hiroki Takao ,  Norio Ohta ,  Akiyoshi Itou ,  Katsuji Nakagawa ,  Manabu Tani ,  Masafumi Yoshihiro ,  Masaki Sekine

发明人： Hiroyuki Awano ,  Katsusuke Shimazaki ,  Hiroki Takao ,  Norio Ohta ,  Akiyoshi Itou ,  Katsuji Nakagawa ,  Manabu Tani ,  Masafumi Yoshihiro ,  Masaki Sekine

IPC分类号： G11B1100

CPC分类号： G11B7/1275 ,  G11B11/10515 ,  G11B11/10543

摘要： The magneto-optical recording medium has a magnetic domain magnification reproducing layer and an information recording layer. Clock marks are formed on the information recording layer, making it possible to generate a reproducing clock on the basis of these. The clock marks are detected either by irradiating directly with light of wavelength &lgr;2(&lgr;1≠&lgr;2), being different from the light of wavelength &lgr;1 which is used for reproducing the recording marks, or by applying a direct-current magnetic field, transferring and enlarging the clock marks on to the magnetic domain magnification reproducing layer, and detecting the reproduction signals from this magnetic domain magnification reproducing layer. Since the reproducing clock is in exact synchronisation with the recording marks, it is eminently suitable as a clock for pulse-modulated reproducing light and reproducing magnetic fields used when reproducing the reproducing layer.

摘要翻译： 磁光记录介质具有磁畴倍率再现层和信息记录层。 在信息记录层上形成时钟标记，从而可以基于这些生成再现时钟。 通过直接照射波长为lambd2（lambd1> lambd2）的光，不同于用于再现记录标记的波长lambd1的光，或通过施加直流磁场，转印和 将时钟标记放大到磁畴倍率再现层，并检测来自该磁畴倍率再现层的再现信号。 由于再现时钟与记录标记完全同步，所以它非常适合用作脉冲调制再现光的时钟并且再现再生层时使用的再现磁场。

公开(公告)号：US06477118B1

公开(公告)日：2002-11-05

申请号：US09449765

申请日：1999-11-26

申请人： Hiroyuki Awano ,  Masaki Sekine ,  Manabu Tani ,  Masafumi Yoshihiro ,  Hiroshi Ido

发明人： Hiroyuki Awano ,  Masaki Sekine ,  Manabu Tani ,  Masafumi Yoshihiro ,  Hiroshi Ido

IPC分类号： G11B1100

CPC分类号： G11B7/1387 ,  G11B11/1051 ,  G11B11/10515 ,  G11B11/10534 ,  G11B11/10543 ,  G11B11/10554 ,  G11B11/1058 ,  G11B11/10584 ,  G11B11/10591 ,  G11B2005/0021

摘要： Disclosed are a reproducing method and a reproducing apparatus capable of performing reproduction with a wide power margin, as well as a recording method and a recording apparatus preferably used for super high density recording. A recording and reproducing apparatus 101 principally comprises a magnetic field-applying unit, a laser beam-radiating section, and a signal processing system. A magnetic coil 29, which is provided for the magnetic field-applying unit, is arranged so that its axis of magnetic field generation 102 is oblique to a surface of an information-recording medium 100. A reproducing magnetic field is applied in an oblique direction to the surface of the information-recording medium 100 by using the magnetic coil 29 while radiating a reproducing light beam to the medium by using the laser beam-radiating section. Accordingly, the leak magnetic field in the in-plane direction from a recording magnetic domain in a recording layer is amplified. The inversion of magnetization in a reproducing layer tends to occur, and the reproducing power margin is widened. The recording and reproducing apparatus 101 is also capable of recording information. An extremely minute recording magnetic domain can be formed in the recording layer of the information-recording medium.

摘要翻译： 公开了能够以大的功率余量进行再现的再现方法和再现装置，以及优选用于超高密度记录的记录方法和记录装置。 记录和再现装置101主要包括磁场施加单元，激光束辐射部分和信号处理系统。 设置用于磁场施加单元的磁线圈29被布置成使得其磁场产生轴102倾斜于信息记录介质100的表面。再现磁场沿倾斜方向 通过使用电磁线圈29同时通过使用激光束辐射部分将再现光束照射到介质上而到信息记录介质100的表面。 因此，记录层中记录磁畴的面内方向的泄漏磁场被放大。 再现层中的磁化反转趋于发生，再现功率余量变大。 记录和再现装置101还能够记录信息。 可以在信息记录介质的记录层中形成极细的记录磁畴。

公开(公告)号：US06584044B2

公开(公告)日：2003-06-24

申请号：US10059192

申请日：2002-01-31

申请人： Manabu Tani ,  Hiroyuki Awano ,  Masafumi Yoshihiro ,  Masaki Sekine

发明人： Manabu Tani ,  Hiroyuki Awano ,  Masafumi Yoshihiro ,  Masaki Sekine

IPC分类号： G11B1100

CPC分类号： G11B11/1053 ,  G11B11/10513 ,  G11B11/10515 ,  G11B11/10528

摘要： A recording method for recording information on a recording layer of a magneto optical recording medium by radiating a recording light beam onto the medium while applying a magnetic field in a recording direction to the medium. The method includes applying a magnetic field having a magnetic field strength H1 in the recording direction when recording a record mark having a mark length A on the recording layer, and applying a magnetic field have a magnetic field strength H2 in the recording direction when recording a record mark having a mark length B (B≠A) on the recording layer. Independent of the lengths of the magnetic domains recorded on the recording layer, the record information can be transferred to a reproducing layer making it possible to reproduce high density record information.

摘要翻译： 一种用于在磁光记录介质的记录层上记录信息的记录方法，该方法是在记录方向上向介质施加磁场的同时，将记录光束照射到介质上。 该方法包括当在记录层上记录具有标记长度A的记录标记时，在记录方向上施加具有磁场强度H1的磁场，并且在记录方向时施加磁场具有记录方向上的磁场强度H2 在记录层上具有标记长度B（B <> A）的记录标记。 独立于记录在记录层上的磁畴的长度，记录信息可被传送到再现层，从而可以再现高密度记录信息。

公开(公告)号：US06385141B1

公开(公告)日：2002-05-07

申请号：US09478459

申请日：2000-01-06

申请人： Manabu Tani ,  Hiroyuki Awano ,  Masafumi Yoshihiro ,  Masaki Sekine

发明人： Manabu Tani ,  Hiroyuki Awano ,  Masafumi Yoshihiro ,  Masaki Sekine

IPC分类号： G11B1100

CPC分类号： G11B11/1053 ,  G11B11/10513 ,  G11B11/10515 ,  G11B11/10528

摘要： A bit of binary information which is one of “1” and “0” is assigned to a domain pattern which is a combination of a recorded magnetic domain and a magnetic domain magnetized in the direction opposite to the direction in which the recording domain is magnetized. A bit of binary information which is the other of “1” and “0” is assigned to a domain pattern consisting of two magnetic domains magnetized in the same direction as the foregoing magnetic domain is magnetized. Consequently, two or more consecutive bits of record information are formed, on a recording layer, as a series of domain patterns each of which is a combination, as a record information unit, of a recorded magnetic domain and a magnetic domain magnetized in the direction opposite to the direction in which the recording domain is magnetized. Independent of the lengths of the magnetic domains recorded on the recording layer, the record information can be transferred to a reproducing layer. This makes it possible to reproduce high-density record information securely or reliably.

摘要翻译： 将作为“1”和“0”之一的二进制信息的一位分配给域图案，其是记录磁畴和磁记录磁场方向相反方向磁化的磁畴的组合 。 将另一个“1”和“0”的二进制信息分配给由与上述磁畴磁化相同方向磁化的两个磁畴组成的域模式。 因此，在记录层上形成记录信息的两个或更多个连续位作为一系列域模式，每个区域模式是作为记录信息单元的记录磁畴和沿该方向磁化的磁畴的记录信息单元的组合 与记录域被磁化的方向相反。 独立于记录在记录层上的磁畴的长度，记录信息可被传送到再现层。 这使得可以安全或可靠地再现高密度记录信息。

公开(公告)号：US06337478B1

公开(公告)日：2002-01-08

申请号：US09434668

申请日：1999-11-05

申请人： Toshio Uehara ,  Akiyoshi Itoh ,  Katsuji Nakagawa ,  Manabu Tani ,  Bruce T. Williams

发明人： Toshio Uehara ,  Akiyoshi Itoh ,  Katsuji Nakagawa ,  Manabu Tani ,  Bruce T. Williams

IPC分类号： G01R2912

CPC分类号： G01Q60/30 ,  Y10S977/852 ,  Y10S977/864

摘要： An electrostatic force microscope for measuring electrostatic force of a sample under test including a detector comprising a cantilever arm having a tip formation at one end and located so that electrostatic force is induced at the tip due to electrostatic charge on the sample under test, an optical system for transforming bending of the cantilever arm due to electrostatic force induced at the tip into an electrical signal containing a frequency component of the electrostatic force induced at the detector tip, a source for applying bias voltage to the detector, a detector for detecting the frequency component of the electrostatic force induced at the detector tip so that a measurement of electrostatic force on the sample under test can be obtained, and an electrostatic shield operatively associated with the cantilever arm. The shield is located between the cantilever arm and the sample under test, in particular in close spaced relation to the arm. The cantilever arm and the shield are maintained at the same electrical potential so that lines of electrostatic force are terminated at the shield.

摘要翻译： 一种用于测量被测样品的静电力的静电力显微镜，包括检测器，该检测器包括悬臂，所述悬臂臂在一端具有尖端形成，并且定位成使得由于被测试样品上的静电荷引起的尖端处的静电力，光学 用于将由尖端引起的静电力引起的悬臂的弯曲变形为包含在检测器尖端感应的静电力的频率分量的电信号的系统，用于向检测器施加偏置电压的源，用于检测频率的检测器 在检测器尖端处感应的静电力的分量，使得可以获得在被测试样品上的静电力的测量，以及与悬臂相配合的静电屏蔽。 屏蔽位于悬臂与试验样品之间，特别是与臂紧密隔开。 悬臂和屏蔽件保持相同的电位，使得静电力线在屏蔽处终止。

公开(公告)号：US06507197B1

公开(公告)日：2003-01-14

申请号：US09183082

申请日：1998-10-30

申请人： Akiyoshi Itoh ,  Katsuji Nakagawa ,  Manabu Tani ,  Toshio Uehara ,  Bruce T. Williams

发明人： Akiyoshi Itoh ,  Katsuji Nakagawa ,  Manabu Tani ,  Toshio Uehara ,  Bruce T. Williams

IPC分类号： G01N2760

CPC分类号： G01Q40/00 ,  G01Q60/30 ,  G01Q60/40 ,  Y10S977/852 ,  Y10S977/864

摘要： An electrostatic force microscope wherein electrostatic force applied to the detector is determined through obtaining the field distribution on several different shaped detectors with the calculation of the voltage distribution near the detector with the Finite Element Method to direct the measurement of the absolute charge amount on surface under test so that one can define the differences between the analysis and the results from the parallel plate model. Of interest is how large the error in the charge detection occurs in conjunction with thickness change of dielectric materials to be tested. There is provided a detector with cantilever which has proper shape for the spatial resolution of 10&mgr; made out of nickel foil for an electrostatic force microscope and the electrostatic force which appeared on it has been calculated.

摘要翻译： 静电力显微镜，其中施加到检测器的静电力是通过在几个不同形状的检测器上获得场分布来确定的，其中利用有限元法计算检测器附近的电压分布，以指示在绝对电荷量的测量下 测试，以便可以定义分析和平行板模型的结果之间的差异。 感兴趣的是电荷检测中的误差与要测试的介电材料的厚度变化一起发生多大。 提供了具有悬臂的检测器，其具有用于静电力显微镜的由镍箔制成的10mu的空间分辨率的适当形状，并且已经计算了出现在其上的静电力。

公开(公告)号：US20050052956A1

公开(公告)日：2005-03-10

申请号：US10895910

申请日：2004-07-22

申请人： Hiroshi Ido ,  Hiroyuki Awano ,  Manabu Tani ,  Susumu Imai

发明人： Hiroshi Ido ,  Hiroyuki Awano ,  Manabu Tani ,  Susumu Imai

IPC分类号： G11B11/00 ,  G11B11/105

CPC分类号： G11B11/10515 ,  G11B11/10595

摘要： A means is provided to determine, accurately in a shorter period of time, an optimum reproducing laser beam intensity for reproducing user data or various management data on a magneto-optical recording medium based on the magnetic amplifying magneto-optical transfer system. In a method for determining the reproducing laser beam intensity of the present invention, a test reproduction area, which is formed of maze magnetic domains having random sizes not subjected to any recording process and provided on a magneto-optical recording medium based on Zero-Field MAMMOS, is irradiated with a laser beam before reproducing user information while changing the laser beam intensity to detect a magneto-optical signal. Subsequently, the reproducing laser beam intensity is determined for user information on the basis of the magneto-optical signal obtained from the test reproduction area.

摘要翻译： 提供了一种装置，用于在更短的时间内精确地确定用于基于磁放大磁光转移系统在磁光记录介质上再现用户数据或各种管理数据的最佳再现激光束强度。 在本发明的再生激光强度的确定方法中，由具有不经历任何记录处理的随机大小的迷宫磁畴形成的测试再现区域，其设置在基于零场的磁光记录介质上 MAMMOS在再现用户信息之前用激光束照射，同时改变激光束强度以检测磁光信号。 随后，基于从测试再现区域获得的磁光信号，确定用户信息的再现激光束强度。

公开(公告)号：US20050069731A1

公开(公告)日：2005-03-31

申请号：US10949658

申请日：2004-09-27

申请人： Hiroyuki Awano ,  Susumu Imai ,  Hiroshi Ido ,  Manabu Tani

发明人： Hiroyuki Awano ,  Susumu Imai ,  Hiroshi Ido ,  Manabu Tani

IPC分类号： G11B11/105 ,  G11B5/02 ,  G11B5/64 ,  G11B11/10

CPC分类号： G11B11/10584 ,  G11B11/10591 ,  Y10T428/265

摘要： A magneto-optical recording medium includes a recording layer, a reproducing layer in which information is subjected to expansion reproduction, a first intermediate layer which is provided between the recording layer and the reproducing layer, a recording magnetic field assist layer which is provided on a side opposite to a side of the first intermediate layer with respect to the recording layer, and a second intermediate layer which is provided between the recording layer and the recording magnetic field assist layer. The recording magnetic field assist layer exhibits perpendicular magnetization, which is one of an amorphous alloy film containing GdFeCo as major component and a multilayer film formed by alternately stacking transition metal layers and noble metal layers. The recording magnetic field assist layer generates the assist magnetic field during recording of information to form stable recording magnetic domains even when the external magnetic field is low.

摘要翻译： 磁光记录介质包括记录层，信息进行扩展再现的再现层，设置在记录层和再现层之间的第一中间层，设置在记录层上的记录磁场辅助层 与第一中间层相对于记录层的一侧相反的一侧，以及设置在记录层和记录磁场辅助层之间的第二中间层。 记录磁场辅助层表现出作为主要成分含有GdFeCo的非晶态合金膜之一的垂直磁化强度，以及通过交替堆叠过渡金属层和贵金属层形成的多层膜。 记录磁场辅助层在记录信息期间产生辅助磁场，以形成稳定的记录磁畴，即使当外部磁场较低时。

公开(公告)号：US06567348B1

公开(公告)日：2003-05-20

申请号：US09433021

申请日：1999-11-03

申请人： Kouichirou Wakabayashi ,  Masafumi Yoshihiro ,  Manabu Tani

发明人： Kouichirou Wakabayashi ,  Masafumi Yoshihiro ,  Manabu Tani

IPC分类号： G11B1100

CPC分类号： G11B11/10528 ,  G11B11/10513 ,  G11B11/10515 ,  G11B11/10595 ,  G11B20/1426

摘要： When recording marks having various lengths are recorded to represent information on a magneto-optical recording medium, a mark length-correcting circuit is used to correct a mark length nT with a mark length correction amount Lc determined for each mark length so that the recording is performed with a shorter mark length nT′=nT−Lc. When reproduction is performed on the magneto-optical recording medium, an appropriate reproducing light power and an appropriate reproducing magnetic field intensity can be easily selected for any recording mark having any length. Thus, the reproducing power margin is widened. The recording method is effective on a magneto-optical recording medium of the MAMMOS type comprising a recording layer and a reproducing layer, in which the light and the magnetic field are applied during the reproduction to transfer a magnetic domain from the recording layer to the reproducing layer in a magnified form.

摘要翻译： 当记录具有各种长度的记录标记以表示关于磁光记录介质的信息时，使用标记长度校正电路来校正标记长度nT，并以每个标记长度确定标记长度校正量Lc，使得记录是 以较短的标记长度nT'= nT-Lc执行。 当对磁光记录介质进行再现时，可以容易地为任何长度的任何记录标记选择适当的再现光功率和适当的再现磁场强度。 因此，再现功率余量变宽。 记录方法在包括记录层和再现层的MAMMOS类型的磁光记录介质上有效，其中在再现期间施加光和磁场以将磁畴从记录层传送到再现 层以放大的形式。

公开(公告)号：US20070130578A1

公开(公告)日：2007-06-07

申请号：US11448035

申请日：2006-06-07

申请人： Hiroshi Ido ,  Manabu Tani ,  Hideaki Yamanaka ,  Yoshiaki Inamura

发明人： Hiroshi Ido ,  Manabu Tani ,  Hideaki Yamanaka ,  Yoshiaki Inamura

IPC分类号： G11B17/028

CPC分类号： G11B17/028 ,  G11B33/148

摘要： In order to reduce local deflection mainly caused by static electricity generated on a flexible disk which is capable of optical recording and reproducing and is mounted on an attitude control plate, and to perform stable focusing in the optical recording and reproducing, according to the present invention, a spacer is incorporated into the attitude control plate having a penetrating vents for air inflow, the flexible disk capable of the optical recording and reproducing is mounted to rotate integrally to generate a stable air flow in a gap secured between the flexible disk and the attitude control plate so as to equilibrate a force due to the air flow and gravity and a centrifugal force of the flexible disk, and electrostatic repulsion, so that a stably balanced state of the flexible disk is maintained.

摘要翻译： 为了减少主要由能够进行光学记录和再现并安装在姿态控制板上的柔性盘上产生的静电引起的局部偏转，并且在根据本发明的光学记录和再现中进行稳定的聚焦 将间隔件结合到具有用于空气流入的透气孔的姿态控制板中，安装能够进行光学记录和再现的柔性盘一体地旋转，以在固定在软盘和姿态之间的间隙中产生稳定的空气流 从而平衡由于空气流动和重力以及柔性盘的离心力引起的力和静电斥力，使得维持柔性盘的稳定平衡状态。