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1. 发明授权

US06195234B1 Magnetic discs with raised features in the clamping area 有权
标题翻译：在夹紧区域具有凸起特征的磁盘
公开(公告)号：US06195234B1
公开(公告)日：2001-02-27
申请号：US09133720
申请日：1998-08-13
申请人： Ramesh Sundaram , John L. Brand , Subrahmanyan Nagarajan , James Rex Staggers, Jr. , Walter Wong
发明人： Ramesh Sundaram , John L. Brand , Subrahmanyan Nagarajan , James Rex Staggers, Jr. , Walter Wong
IPC分类号： G11B582
CPC分类号： G11B17/038 , G11B5/82 , G11B17/02 , G11B23/0021 , G11B23/0035
摘要： A disc drive, includes a base, a disc stack rotatably attached to the base, and an actuator assembly movably attached to the base. The actuator assembly also includes a bearing housing, head mounting arms, head suspensions attached to the head mounting arms and a head assembly attached to the head suspension. The disc drive also includes a hub having a cylindrical body. The hub includes a disc mounting flange on one end of the hub. A disc has an opening therein sufficient to allow the hub to fit within the opening of the disc. The disc has two substantially flat data surfaces. The disc also includes a disc clamping portion located near the opening in the disc. A clamp is used to attach the disc to the hub. At least one disc is placed onto the hub and onto the mounting flange of the hub. The clamp is then used to clamp the disc to the hub. The disc clamping portion includes features for accommodating differences in flatness between the disc surfaces, the mounting flange of the hub and the clamp. The features include a first raised feature which extends above the first data surface of the disc, and a second raised feature which extends above the second data surface of the disc. The features are either bumps or annular rings positioned on the disc mounting surface. The bumps or rings may be formed using a laser. The ring may also include a multiplicity of individual bumps. As the disc is clamped to the hub, the raised feature deforms to accommodate the mismatch in flatness between the disc surfaces, the mounting flange of the hub, and the clamp. The clamp may include a roughened disc clamping surface. The upper surface of the disc mounting flange may also be roughened.
摘要翻译：盘驱动器包括基座，可旋转地附接到基座的盘叠和可移动地附接到基座的致动器组件。致动器组件还包括轴承壳体，头部安装臂，附接到头部安装臂的头部悬挂件和附接到头部悬架的头部组件。盘驱动器还包括具有圆柱体的轮毂。轮毂包括在轮毂的一端的盘安装法兰。盘具有足够的开口，以允许轮毂装配在盘的开口内。盘具有两个基本平坦的数据表面。盘还包括位于盘的开口附近的盘夹紧部分。夹具用于将光盘连接到集线器。至少一个盘被放置在轮毂上并到轮毂的安装凸缘上。然后使用夹具将盘夹紧到轮毂上。盘夹紧部分包括用于适应盘表面，轮毂的安装法兰和夹具之间的平坦度的差异的特征。特征包括在盘的第一数据表面上方延伸的第一凸起特征，以及在盘的第二数据表面上方延伸的第二凸起特征。这些特征是位于盘安装表面上的凸起或环形环。凸起或环可以使用激光形成。环也可以包括多个单独的凸块。当盘被夹紧到轮毂时，凸起的特征变形以适应盘表面，轮毂的安装凸缘和夹具之间的平坦度的不匹配。夹具可以包括粗糙的盘夹紧表面。盘安装法兰的上表面也可以被粗糙化。

2. 发明授权

US06212042B1 Slider having air bearing surface which includes pads for disk storage system 有权
标题翻译：滑块具有包括用于盘存储系统的垫的空气轴承表面
公开(公告)号：US06212042B1
公开(公告)日：2001-04-03
申请号：US09029276
申请日：1998-12-09
申请人： Jing Gui , Bruno J. Marchon , Daniel P. Burbank , Joel W. Hoehn , Jeffery K. Berkowitz , Ramesh Sundaram , John L. Brand , Subrahmanyan Nagarajan , Dallas W. Meyer , Peter R. Segar , Andreas A. Polycarpou , Zine-Eddine Boutaghou , Dale E. Egbert , David G. Wobbe , Mary Cynthia Hipwell , Huan Tang
发明人： Jing Gui , Bruno J. Marchon , Daniel P. Burbank , Joel W. Hoehn , Jeffery K. Berkowitz , Ramesh Sundaram , John L. Brand , Subrahmanyan Nagarajan , Dallas W. Meyer , Peter R. Segar , Andreas A. Polycarpou , Zine-Eddine Boutaghou , Dale E. Egbert , David G. Wobbe , Mary Cynthia Hipwell , Huan Tang
IPC分类号： G11B560
CPC分类号： G11B5/6005 , G11B7/122 , G11B7/22 , G11B21/21
摘要： A disc storage system includes a rotating disc and a transducer. The transducer is carried on a slider which is supported by an armature. The armature is used to move the slider radially across the disc surface whereby information may be read from or written to the disc surface of the transducer. The slider includes an air bearing surface which faces the disc surface. As the disc rotates, the air bearing surface causes the slider to “fly” over the disc surface. Pads are provided on the air bearing surface to improve operational characteristics of the system.
摘要翻译：盘存储系统包括旋转盘和换能器。传感器承载在由电枢支撑的滑块上。电枢用于将滑块径向地移动到盘表面上，从而可以从换能器的盘表面读取或写入信息。滑块包括面向盘表面的空气支承表面。当盘旋转时，空气轴承表面导致滑块“在飞盘”的表面上。垫片设置在空气轴承表面上，以改善系统的操作特性。

3. 发明授权

US5912791A Landing zone design for a magnetic disc 失效
标题翻译：磁带的着陆区设计
公开(公告)号：US5912791A
公开(公告)日：1999-06-15
申请号：US876215
申请日：1997-06-16
申请人： Ramesh Sundaram , Subrahmanyan Nagarajan
发明人： Ramesh Sundaram , Subrahmanyan Nagarajan
IPC分类号： G11B5/54 , G11B5/55 , G11B5/60 , G11B5/73 , G11B5/82 , G11B5/84 , G11B21/12 , G11B21/21 , G11B21/22 , G11B23/00 , G11B33/08
CPC分类号： G11B23/0035 , G11B21/21 , G11B21/22 , G11B5/54 , G11B5/6005 , G11B5/7315 , G11B5/7325 , G11B5/82 , G11B5/84 , G11B5/8404 , G11B5/8408 , G11B21/12 , G11B33/08 , G11B5/5582 , G11B5/6011
摘要： A data storage disc having an improved landing zone for supporting a head gimbal assembly for takeoff and landing. The improved landing zone having a landing surface formed of a patterned surface structure. The patterned surface structure including contact surfaces formed generally flush with a disc surface and depressions formed into the disc surface at predefined spaced location and extending below the disc surface. The patterned surface structure reducing stiction for "takeoff" of a slider from the disc surface and reducing interference of the slider and disc surface while flying over a transition zone at the edge of the data zone and landing zone.
摘要翻译：一种数据存储盘，其具有改进的着陆区，用于支撑用于起飞和着陆的头部万向架组件。改进的着陆区具有由图案化的表面结构形成的着陆表面。图案化的表面结构包括大致与盘表面齐平的接触表面和在预定间隔的位置处形成并延伸到盘表面下方的形成在盘表面中的凹陷。图案化的表面结构减少了滑块从盘表面“起飞”的静止，并减少滑块和盘表面在数据区域和着陆区边缘的过渡区域上飞行时的干扰。

4. 发明授权

US6071007A Thermal asperity detection head 失效
标题翻译：热凹凸检测头
公开(公告)号：US6071007A
公开(公告)日：2000-06-06
申请号：US978102
申请日：1997-11-25
申请人： Mark J. Schaenzer , Li Li , Zine-Eddine Boutaghou , Subrahmanyan Nagarajan
发明人： Mark J. Schaenzer , Li Li , Zine-Eddine Boutaghou , Subrahmanyan Nagarajan
IPC分类号： G01B21/30 , G11B27/36 , G11B33/10 , G01B5/28 , G01N25/00 , G11B5/02
CPC分类号： G11B27/36 , G01B21/30 , G11B2220/20 , G11B33/10
摘要： An apparatus for detecting surface variations on a rotating disc includes a slider, suspension assembly, first surface variation sensor, second surface variation sensor, and a controller. The slider is adapted to fly over the disc. The suspension assembly is coupled to the slider to position the slider over the disc. The first surface variation sensor is disposed on the slider, and provides a first sensor signal based upon slider contact with one of the surface variations. The second surface variation sensor is disposed on the slider and spaced from the first surface variation sensor. The second surface variation sensor provides a second sensor signal based upon slider contact with the surface variation. The controller receives the first and second signals and calculates a position of the surface variation based upon the first and second sensor signals.
摘要翻译：用于检测旋转盘上的表面变化的装置包括滑块，悬架组件，第一表面变化传感器，第二表面变化传感器和控制器。滑块适于在盘上飞行。悬架组件联接到滑块以将滑块定位在盘上。第一表面变化传感器设置在滑块上，并且基于滑块与表面变化之一的接触来提供第一传感器信号。第二表面变化传感器设置在滑块上并与第一表面变化传感器间隔开。第二表面变化传感器基于与表面变化的滑块接触提供第二传感器信号。控制器接收第一和第二信号，并且基于第一和第二传感器信号来计算表面变化的位置。

5. 发明授权

US5825181A Multi-impact thermal asperity sensor head 失效
标题翻译：多重冲击热凹凸传感头
公开(公告)号：US5825181A
公开(公告)日：1998-10-20
申请号：US831070
申请日：1997-04-01
申请人： Mark J. Schaenzer , Zine-Eddine Boutaghou , Subrahmanyan Nagarajan , Ramesh Sundram
发明人： Mark J. Schaenzer , Zine-Eddine Boutaghou , Subrahmanyan Nagarajan , Ramesh Sundram
IPC分类号： G01B21/08 , G11B5/012 , G11B5/39 , G11B5/48 , G11B27/36 , G11B33/10 , G01R1/00
CPC分类号： G11B33/10 , G01B21/085 , G11B27/36 , G11B5/012 , G11B5/3954 , G11B5/4886
摘要： An asperity height sensing head and method of using the same are disclosed. The head includes multiple magnetoresistive (MR) sensors carried by a first rail of a slider adjacent to the air bearing surface (ABS) and positioned a distance L.sub.p from each other. Asperity height estimating circuitry coupled to each of the multiple MR sensors detects a number N of the MR sensors which exhibit a change in resistance as a result of contact between the ABS and a first asperity on the surface of the disc. The asperity height estimating circuitry estimates the height H.sub.A of the first asperity as a function of the number N, as a function of the pitch angle .theta..sub.p , and as a function of the distance L.sub.p.
摘要翻译：公开了一种凹凸高度感测头及其使用方法。头部包括由滑块的与空气支承表面（ABS）相邻的第一轨道承载的多个磁阻（MR）传感器，并且彼此间距离Lp。耦合到多个MR传感器中的每一个的粗糙度高度估计电路检测出由于ABS与盘的表面上的第一粗糙度之间的接触而呈现出电阻变化的数目N的MR传感器。粗糙度高度估计电路根据距离Lp估计第一粗糙度的高度HA作为数量N的函数，作为俯仰角θp的函数。

6. 发明授权

US06239954B1 Reader for a low-flying magnetoresistive sensor 有权
标题翻译：用于低飞行磁阻传感器的读卡器
公开(公告)号：US06239954B1
公开(公告)日：2001-05-29
申请号：US09180222
申请日：1998-11-02
申请人： Peter Raymond Segar , Subrahmanyan Nagarajan
发明人： Peter Raymond Segar , Subrahmanyan Nagarajan
IPC分类号： G11B539
CPC分类号： G11B5/3945 , G11B5/02 , G11B5/4886 , G11B23/0007
摘要： A reader portion (150) of a magnetoresistive head is disclosed. The reader portion (150) includes a magnetoresistive read element (156) for reading information from a magnetic media (216) and a non-magnetic element (153) to detect and cancel thermal changes in the read head. A spacer (155) is positioned between the magnetoresistive read element (156) and the non-magnetic element (153). A plurality of electrical contacts (166, 167, 168) connect the magnetoresistive read element (156) and the non-magnetic element (153) to external circuitry.
摘要翻译：公开了磁阻头的读取器部分（150）。读取器部分（150）包括用于从磁性介质（216）和非磁性元件（153）读取信息的磁阻读取元件（156），以检测和消除读取头中的热变化。间隔物（155）位于磁阻读取元件（156）和非磁性元件（153）之间。多个电触点（166,167,168）将磁阻读取元件（156）和非磁性元件（153）连接到外部电路。

7. 发明授权

US06201691B1 Removable electronic subassembly with a compressible shock absorbing device 失效
标题翻译：具有可压缩减震装置的可移动电子组件
公开(公告)号：US06201691B1
公开(公告)日：2001-03-13
申请号：US08751375
申请日：1996-11-19
申请人： Subrahmanyan Nagarajan
发明人： Subrahmanyan Nagarajan
IPC分类号： H05K700
CPC分类号： G11B33/124 , G11B25/043 , G11B33/08 , H05K5/0269
摘要： A removable electronic subassembly is designed for placement into a data processing system which requires said removable electronic subassembly to fit into an aperture defining a selected form factor. The removable electronic subassembly comprises a rigid enclosure which encloses interior components of the removable electronic subassembly. The rigid enclosure has exterior dimensions which are smaller than the selected form factor. A layer of resilient material is mounted to an exterior of the rigid enclosure. The layer of resilient material and the rigid enclosure have at least one exterior dimension which exceeds the selected form factor in an uncompressed state wherein the resilient material may be compressed such that the at least one exterior dimension conforms to the selected form factor.
摘要翻译：可拆卸的电子组件设计用于放置到数据处理系统中，该系统需要所述可拆卸的电子组件以配合到限定所选形状因子的孔中。可拆卸电子组件包括封闭可拆卸电子组件的内部组件的刚性外壳。刚性外壳的外形尺寸小于选定的外形尺寸。一层弹性材料安装在刚性外壳的外部。弹性材料层和刚性外壳在未压缩状态下具有超过选定形状因数的至少一个外部尺寸，其中弹性材料可以被压缩，使得至少一个外部尺寸符合所选择的形状因子。

8. 发明授权

US5901001A Detection of asperities in recording surface of storage medium 失效
标题翻译：检测记录介质表面的粗糙度
公开(公告)号：US5901001A
公开(公告)日：1999-05-04
申请号：US660063
申请日：1996-06-03
申请人： Dallas W. Meyer , Subrahmanyan Nagarajan , Bo Wei
发明人： Dallas W. Meyer , Subrahmanyan Nagarajan , Bo Wei
IPC分类号： G01R33/12 , G11B21/21 , G11B27/36 , G11B33/10 , G11B5/02
CPC分类号： G01R33/1207 , G11B27/36 , G11B33/10 , G11B21/21
摘要： A tester for use in detecting asperities in a disc surface of a storage system includes a load arm having a proximal end and a distal end. The distal end of the load arm is positioned adjacent the disc surface. A slider is carried on the distal end of the load arm adjacent the disc surface. A thermal sensor is coupled to the slider and provides an electrical output in response to a thermal input due to interaction between the thermal sensor and asperity on the disc surface. Detection circuitry coupled to the thermal sensor detects the electrical output from the thermal sensor and responsively provides a detection output indicating the occurrence of an asperity on the disc surface.
摘要翻译：用于检测存储系统的盘表面中的凹凸的测试器包括具有近端和远端的负载臂。负载臂的远端位于盘表面附近。滑块被承载在与盘表面相邻的负载臂的远端上。热传感器耦合到滑块，并且由于热传感器和盘表面上的粗糙度之间的相互作用而响应于热输入而提供电输出。耦合到热传感器的检测电路检测来自热传感器的电输出，并且响应地提供指示在盘表面上出现粗糙度的检测输出。

9. 发明授权

US06215074B1 Direct mounting system for a disk drive 失效
标题翻译：用于磁盘驱动器的直接安装系统
公开(公告)号：US06215074B1
公开(公告)日：2001-04-10
申请号：US08236771
申请日：1994-04-29
申请人： Michael S. Good , Douglas Wayne Johnson , Subrahmanyan Nagarajan , Brian Lee Rappel , Laurence J. Schmidt , Dennis Ronald Ziegenhagen
发明人： Michael S. Good , Douglas Wayne Johnson , Subrahmanyan Nagarajan , Brian Lee Rappel , Laurence J. Schmidt , Dennis Ronald Ziegenhagen
IPC分类号： H01B1724
CPC分类号： G11B33/121 , G11B33/08
摘要： Disclosed is a disk drive for storing data which includes disks and an actuator mounted on a frame or first housing part. A second housing part, when joined with the first housing part, forms a disk enclosure. The disk enclosure includes rails which have openings therein for mounting the disk drive to the user frame of a computer system. Deformable inserts are placed into the openings in the rails and screws are passed through openings in the frame of the computer system and into the inserts in the openings in the rails of the disk drive. The inserts are more forgiving and result in less distortion than in a mounting system in which the screws are passed directly into tapped holes in the rails of the disk drive. The inserts also electrically insulate the disk drive from the user frame of the computer system.
摘要翻译：公开了一种用于存储包括盘和安装在框架或第一壳体部分上的致动器的数据的磁盘驱动器。当与第一壳体部件接合时，第二壳体部件形成盘壳体。磁盘盒包括其中具有开口的轨道，用于将磁盘驱动器安装到计算机系统的用户框架。可变形插入件被放置在轨道中的开口中，并且螺钉穿过计算机系统的框架中的开口并进入盘驱动器的轨道中的开口中的插入件中。插入件比在安装系统中更为宽容并且导致较少的失真，其中螺钉直接通过磁盘驱动器的轨道中的螺纹孔。插入件还将磁盘驱动器与计算机系统的用户框架电绝缘。

10. 发明授权

US05999360A Disc drive servo system employing thermal signals 失效
标题翻译：光盘驱动伺服系统采用热信号
公开(公告)号：US05999360A
公开(公告)日：1999-12-07
申请号：US793327
申请日：1997-03-14
申请人： Dallas W. Meyer , Subrahmanyan Nagarajan
发明人： Dallas W. Meyer , Subrahmanyan Nagarajan
IPC分类号： G11B5/012 , G11B5/55 , G11B5/596 , G11B5/82
CPC分类号： G11B5/82 , G11B5/012 , G11B5/5565 , G11B5/59627
摘要： A magnetic disc drive has a magnetoresistive element (26) for reading user data from concentric tracks of a rotatable magnetic recording disc (32). The magnetoresistive element has a resistance based on a magnetic field derived from user data and based on temperature of the magnetoresistive element. Heat generated by the bias current through the head is in part dissipated through the disc, the amount of heat dissipated being representative of disc/head spacing. The surface of the recording disc has contour elements (50, 52, 54) arranged in a pattern representing servo data, the contour elements having a height such that the spacing between the magnetoresistive element and the contour elements is different from the spacing between the magnetoresistive element and a nominal surface of the recording disc. As a result, a modulated signal (66) from the head contains a component representative of user data and a component representative of servo data.
摘要翻译： PCT No.PCT / US97 / 04072 Sec。 371日期1997年3月14日 102（e）1997年3月14日PCT PCT 1997年3月14日PCT公布。第WO98 / 41981号公报日期1998年9月24日磁盘驱动器具有用于从可旋转磁记录盘（32）的同心轨道读取用户数据的磁阻元件（26）。磁阻元件具有基于从用户数据导出的磁场和基于磁阻元件的温度的电阻。通过头部的偏置电流产生的热量部分地通过光盘消散，散热量代表光盘/磁头间距。记录盘的表面具有以表示伺服数据的图案布置的轮廓元素（50,52,54），轮廓元件具有使得磁阻元件和轮廓元件之间的间隔不同于磁阻之间的间隔的高度元件和记录盘的标称表面。结果，来自头部的调制信号（66）包含表示用户数据的部件和表示伺服数据的部件。

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