Method for recording magnetic transitions on recording layer having antiferromagnetically coupled ferromagnetic films
    2.
    发明授权
    Method for recording magnetic transitions on recording layer having antiferromagnetically coupled ferromagnetic films 失效
    在具有反铁磁耦合铁磁膜的记录层上记录磁转变的方法

    公开(公告)号:US06594100B2

    公开(公告)日:2003-07-15

    申请号:US09903959

    申请日:2001-07-11

    CPC classification number: C23C28/021 C23C28/00 C23C28/023 C23C28/42 G11B5/66

    Abstract: A method for writing data on a magnetic recording medium includes providing a magnetic recording layer having at least two ferromagnetic films antiferromagnetically coupled together across a nonferromagnetic spacer film, with one of the ferromagnetic films having a greater magnetic moment than the other. A positive write field is applied to a first region to align the moments of both ferromagnetic films with the positive field, and then a negative write field is applied to an adjacent region to align the moments of both ferromagnetic films with the negative field. When the medium is moved away from the write fields, the moment of the ferromagnetic film with the lesser moment in each region flips to be antiparallel to the moment of the other ferromagnetic film in its region. The result is that the adjacent regions become adjacent magnetized domains with the transition between the domains representative of the written data.

    Abstract translation: 一种在磁记录介质上写入数据的方法包括提供具有至少两个铁磁膜的磁记录层,所述至少两个铁磁膜在非铁磁隔离膜上反铁磁耦合在一起,其中一个铁磁膜具有比另一个更大的磁矩。 将正写入场施加到第一区域以将两个铁磁膜的力矩与正场对准,然后将负写入场施加到相邻区域以将两个铁磁膜的力矩与负场对准。 当介质从写入场移动时,每个区域中具有较小力矩的铁磁膜的力矩翻转成与其区域中的另一个铁磁膜的时刻反平行。 结果是相邻区域变成相邻的磁化域,其中代表写入数据的域之间的转变。

    Laminated magnetic recording media with antiferromagnetically coupled layers as the individual magnetic layers in the laminate
    3.
    发明授权
    Laminated magnetic recording media with antiferromagnetically coupled layers as the individual magnetic layers in the laminate 失效
    具有反铁磁耦合层的叠层磁记录介质作为层压板中的各个磁性层

    公开(公告)号:US06372330B1

    公开(公告)日:2002-04-16

    申请号:US09626097

    申请日:2000-07-26

    Abstract: A laminated magnetic recording medium for data storage uses a magnetic recording layer having at least two antiferromagnetically-coupled (AFC) layers spaced apart by a nonferromagnetic spacer layer. Each AFC layer is formed as two ferromagnetic films antiferromagnetically coupled together across an antiferromagnetically coupling film that has a composition and thickness to induce antiferromagnetic coupling of the second film to the first film. The magnetic moments of the two antiferromagnetically-coupled films in each AFC layer are oriented antiparallel, and thus the net remanent magnetization-thickness product (Mrt) of each AFC layer is the difference in the Mrt values of the two ferromagnetic films. The nonferromagnetic spacer layer between neighboring AFC layers has a composition and thickness to prevent any antiferromagnetic coupling of the ferromagnetic films of one AFC layer with the ferromagnetic films of the neighboring AFC layer.

    Abstract translation: 用于数据存储的叠层磁记录介质使用具有至少两个由非铁磁隔离层隔开的反铁磁耦合(AFC)层的磁记录层。 每个AFC层形成为两个铁磁膜,其通过具有组成和厚度的反铁磁耦合膜反铁磁耦合在一起,以诱导第二膜与第一膜的反铁磁耦合。 每个AFC层中的两个反铁磁耦​​合膜的磁矩定向反平行,因此每个AFC层的净残磁强度 - 厚度积(Mrt)是两个铁磁膜的Mrt值之差。 相邻AFC层之间的非铁磁间隔层具有防止一个AFC层的铁磁膜与相邻AFC层的铁磁膜的任何反铁磁耦合的组成和厚度。

    Glass substrate inspection tool having a telecentric lens assembly
    4.
    发明授权
    Glass substrate inspection tool having a telecentric lens assembly 失效
    具有远心透镜组件的玻璃基板检查工具

    公开(公告)号:US5945685A

    公开(公告)日:1999-08-31

    申请号:US974272

    申请日:1997-11-19

    CPC classification number: G01N21/94

    Abstract: A glass disk substrate inspection tool uses a polarized laser beam that is directed to the first surface of the disk substrate at Brewster's angle and is then transmitted through the disk substrate to a light detector that generates a signal representative of the intensity of the light received. Because the light polarized parallel to the plane of incidence, i.e., the plane formed by the line of the incident beam and a line perpendicular to the surface of the disk substrate, is completely transmitted, there is no surface reflection at either the first or second surfaces of the disk substrate. The polarized beam is directed by a first rotating scanner to the input of a telecentric lens assembly that provides an output beam parallel to its optical axis as the beam is being scanned. The beam is then directed by a first fixed mirror to strike the first surface of the disk substrate at Brewster's angle as the beam is scanned along a line across the first disk surface. The beam is then transmitted through the substrate to the second surface of the disk substrate to a second fixed mirror that redirects the beam to a second telecentric lens assembly. The light passes through the second telecentric lens assembly in the direction reverse to the direction of passage through the first telecentric lens assembly so that the output beam from the second telecentric lens assembly is directed to its focal point. This focal point coincides with the point of contact of a second rotating scanner synchronized for rotation with the first scanner. The second scanner directs the transmitted beam to the light detector.

    Abstract translation: 玻璃盘基板检查工具使用以布鲁斯特角度指向盘基片的第一表面的偏振激光束,然后通过盘基片传输到产生表示所接收光的强度的信号的光检测器。 因为平行于入射平面的光,即由入射光束的线形成的平面和垂直于盘基片的表面的一条线被完全透射,所以在第一或第二处没有表面反射 盘基片的表面。 偏振光束由第一旋转扫描器引导到远心透镜组件的输入端,当远射镜被扫描时,其提供平行于其光轴的输出光束。 然后,当沿着穿过第一盘表面的线扫描光束时,光束由第一固定镜引导以以布鲁斯特角冲击盘基片的第一表面。 然后将光束通过基板传送到盘基板的第二表面,到第二固定反射镜,其将光束重定向到第二远心透镜组件。 光穿过第二远心透镜组件的方向与穿过第一远心透镜组件的通过方向相反,使得来自第二远心透镜组件的输出光束被引导到其焦点。 该焦点与第一旋转扫描器的接触点重合,该第二旋转扫描器与第一扫描器旋转同步。 第二扫描器将透射光束引导到光检测器。

    CoCrPtB alloys with increased boron content and method of producing same
    6.
    发明授权
    CoCrPtB alloys with increased boron content and method of producing same 有权
    具有增加硼含量的CoCrPtB合金及其生产方法

    公开(公告)号:US06183832B2

    公开(公告)日:2001-02-06

    申请号:US09173476

    申请日:1998-10-14

    Abstract: A magnetic layer structure with a layer of cobalt-chromium-platinum-boron composite alloy containing 10% to 20% B in the magnetic layer. The useful magnetic properties of the magnetic layer structure are achieved by the incorporation of a nucleation layer prior to the deposition of the magnetic layer. The resultant magnetic layer structures have coercivity Hc values in between 2,000 and 5,000 Oe, grain sizes between 30 and 200 Angstroms and anisotropic crystallographic orientation with the c-axis of the cobalt-chromium-platinum-boron in the plane of the medium. These magnetic layer structures are suitable for magnetic data storage devices including magnetic disks.

    Abstract translation: 具有在磁性层中含有10%至20%B的钴 - 铬 - 铂 - 硼复合合金层的磁性层结构。 通过在沉积磁性层之前引入成核层来实现磁性层结构的有用的磁性能。 所得的磁性层结构的矫顽力Hc值在2000-5,000Oe之间,晶粒尺寸在30和200埃之间,各向异性的晶体取向与介质平面中的钴 - 铬 - 铂 - 硼的c轴。 这些磁性层结构适用于包括磁盘的磁数据存储装置。

    Multiple data surface magneto-optical data storage system
    9.
    发明授权
    Multiple data surface magneto-optical data storage system 失效
    多数据表面磁光数据存储系统

    公开(公告)号:US5644555A

    公开(公告)日:1997-07-01

    申请号:US376943

    申请日:1995-01-19

    CPC classification number: G11B7/1365 G11B11/10543 G11B11/10584 G11B11/10597

    Abstract: An optical data storage system comprises an optical disk drive and a multiple data surface magneto-optical medium. The medium comprises a substrate, a first dielectric layer, a first magneto-optical data layer, a second dielectric layer, a transmissive member, a third dielectric layer, a second magneto-optical data layer, a fourth dielectric layer, and a reflector layer. The thicknesses of the magneto-optical and dielectric layers are selected to maximize the magneto-optical read out signal received from the data layers. The disk drive includes a phase retarder for improving the signal from the magneto-optical data layers.

    Abstract translation: 光学数据存储系统包括光盘驱动器和多数据表面磁光介质。 介质包括基板,第一介电层,第一磁光数据层,第二电介质层,透射构件,第三介电层,第二磁光数据层,第四介电层和反射层 。 选择磁光和介电层的厚度以使从数据层接收的磁光读出信号最大化。 磁盘驱动器包括用于改善来自磁光数据层的信号的相位延迟器。

    Digital pen using speckle tracking
    10.
    发明授权
    Digital pen using speckle tracking 失效
    数字笔使用斑点跟踪

    公开(公告)号:US06686579B2

    公开(公告)日:2004-02-03

    申请号:US09557579

    申请日:2000-04-22

    Abstract: A digital pen that has an ink writing tip includes a laser on a pen body that directs light toward paper across which the writing tip is stroked. A CMOS camera or CCD is also mounted on the pen body for detecting reflections of the laser light, referred to as “speckles”. A processor in the pen body determines relative pen motion based on the speckles. A contact sensor such as an FSR on the pen body senses when the tip is pressed against the paper, with positions being recorded on a flash memory in the pen body when the contact sensor indicates that the pen is against the paper. The memory can be later engaged with a handwriting recognition device to correlate the positions to alpha-numeric characters. Ordinary paper can be used, but, if desired, special bar-coded paper can also be used, so that the recorded positions can be tagged with a page number, form field, and absolute position on the page.

    Abstract translation: 具有油墨写入尖端的数字笔包括在笔体上的激光,其将光引导到写入尖端被抚摸的纸张。 CMOS摄像机或CCD也安装在笔体上,用于检测被称为“斑点”的激光的反射。 笔体中的处理器基于斑点确定相对笔运动。 诸如笔身体上的FSR的接触传感器感测当尖端被压靠在纸上时,当接触传感器指示笔抵靠在纸上时,位置被记录在笔体中的闪存上。 存储器可以稍后与手写识别装置接合,以将位置与字母数字字符相关联。 可以使用普通纸,但是如果需要,也可以使用特殊的条形码纸,使得记录的位置可以在页面上以页码,表格栏和绝对位置标记。

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