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1. 发明授权

US6003364A Glide head for testing a disc surface 失效
标题翻译：滑动头用于测试光盘表面
公开(公告)号：US6003364A
公开(公告)日：1999-12-21
申请号：US145681
申请日：1998-09-02
申请人： Wei Hsin Yao , Ramesh Sundaram
发明人： Wei Hsin Yao , Ramesh Sundaram
IPC分类号： G01B13/22 , G11B5/84 , G11B23/00 , G11B33/10
CPC分类号： G01B13/22 , G11B23/0028 , G11B5/84 , G11B5/8408 , G11B33/10
摘要： An improved glide head is useful for testing the glide quality of a disc. The glide head includes an air bearing surface, pads extending from the air bearing surface and a contact sensor, the contact sensor providing an output in response to an impact on the pad. The air-bearing surface defines a resting plane. The pad protrudes from the air-bearing surface such that the pad projects below the resting plane of the air-bearing surface.
摘要翻译：改进的滑行头可用于测试光盘的滑动质量。滑行头包括空气轴承表面，从空气轴承表面延伸的焊盘和接触传感器，接触传感器响应于对焊盘的冲击而提供输出。空气轴承表面限定了一个静止平面。垫从空气轴承表面突出，使得垫突出到空气轴承表面的静止平面下方。

2. 发明授权

US06580572B1 Combination glide test/burnishing head and head suspension 失效
标题翻译：组合滑行测试/抛光头和头悬挂
公开(公告)号：US06580572B1
公开(公告)日：2003-06-17
申请号：US09737388
申请日：2000-12-14
申请人： Wei Hsin Yao , Ramesh Sundaram , David Shiao-Min Kuo
发明人： Wei Hsin Yao , Ramesh Sundaram , David Shiao-Min Kuo
IPC分类号： G11B502
CPC分类号： G11B5/6005 , G11B5/3169 , G11B5/455 , G11B27/36 , G11B2220/20
摘要： A combination glide test/burnishing head can be utilized in a glide test/burnishing system. The combination glide test/burnishing head includes two piezo-electric elements, which can be utilized in a passive mode as sensors for detecting contacts between the glide test/burnishing head and asperities on the surface of a magnetic recording disc. Contact between the glide test/burnishing head and disc asperities results in generation of a defect detection signal, which can be utilized by associated test logic to define the location of the detected asperities on the disc surface. The piezo-electric elements of the glide test/burnishing head can also be utilized in an active mode to cause yaw variation in the flight attitude of the glide test/burnishing head, in turn causing a burnishing pad on the glide test/burnishing head to be moved radially into contact with a detected disc asperity. Once an active, burnishing operation has been performed, the piezo-electric elements of the glide test/burnishing head are returned to passive mode, to determine if the burnishing operation was successful in removing the asperity on the disc surface. Combining the glide test and burnishing functions in a common head assembly allows the glide test and burnishing functions to be performed using a single actuator for the glide test/burnishing head, simplifying and reducing the cost of a glide test/burnishing system.
摘要翻译：组合滑行试验/抛光头可用于滑移试验/抛光系统。组合滑行测试/抛光头包括两个压电元件，其可以被动模式用作用于检测滑动测试/抛光头与磁记录盘表面上的凹凸之间的接触的传感器。滑动测试/抛光头和盘形凹凸之间的接触导致产生缺陷检测信号，该缺陷检测信号可由相关联的测试逻辑用来定义检测到的凹凸在盘表面上的位置。滑行试验/抛光头的压电元件也可以以主动模式使用，以使滑行试验/抛光头的飞行姿态产生偏航变化，从而在滑动试验/抛光头上造成抛光垫径向移动以与检测到的圆盘凹凸接触。一旦执行了主动的抛光操作，滑动测试/抛光头的压电元件返回到被动模式，以确定抛光操作是否成功地去除了盘表面上的凹凸。将滑动试验和抛光功能结合在共同的头部组件中，允许使用用于滑动试验/抛光头的单个致动器来执行滑行试验和抛光功能，从而简化和降低滑动试验/抛光系统的成本。

3. 发明授权

US07178995B2 Method and apparatus for reducing reflectance in an optical mount using a glass spacer 有权
标题翻译：使用玻璃间隔物降低光学座架中的反射率的方法和装置
公开(公告)号：US07178995B2
公开(公告)日：2007-02-20
申请号：US10429899
申请日：2003-05-05
申请人： Lew Aronson , Jignesh Shah , Paul Rosenberg , Ramesh Sundaram
发明人： Lew Aronson , Jignesh Shah , Paul Rosenberg , Ramesh Sundaram
IPC分类号： G02B6/36
CPC分类号： G02B6/4207 , G02B6/421 , G02B6/4292
摘要： Embodiments of the invention generally provide an optical component configured to minimize reflectance. The component generally includes an optical housing having a bore formed therethrough, the bore having a central component receiving portion, and a glass block positioned in the component receiving portion in abutment with a fiber receiving bore. The component further includes a fuzzy mount secured in the central component receiving portion, the fuzzy mount being secured via a plurality of extending teeth formed on an outer surface thereof, the teeth being configured to engage an inner surface of the central component receiving portion to secure the fuzzy mount therein.
摘要翻译：本发明的实施例通常提供一种配置成使反射率最小化的光学部件。该部件通常包括具有穿过其中形成的孔的光学壳体，所述孔具有中心部件接收部分，以及位于与光纤接收孔邻接的部件接收部分中的玻璃块。所述部件还包括固定在所述中央部件接收部分中的模糊安装座，所述模糊安装座通过形成在其外表面上的多个延伸齿固定，所述齿构造成与所述中央部件接收部分的内表面接合以固定其中的模糊安装。

4. 发明授权

US06301797B1 Recognizing and compensating for disk shift in computer disk drives 失效
标题翻译：识别和补偿计算机磁盘驱动器中的磁盘移位
公开(公告)号：US06301797B1
公开(公告)日：2001-10-16
申请号：US09325887
申请日：1999-06-04
申请人： Ramesh Sundaram , Wei Yao , Li-Ping Wang , David Shiao-Min Kuo
发明人： Ramesh Sundaram , Wei Yao , Li-Ping Wang , David Shiao-Min Kuo
IPC分类号： B65G4722
CPC分类号： G11B5/012 , G11B5/5582 , G11B17/038 , G11B19/04 , G11B33/08 , G11B33/10 , Y10S414/135
摘要： A method and apparatus for data disks adapted to compensate for effects of shock loads imparted to a disk drive which are of sufficient magnitude to cause disk shifts. A series of topographical features are formed on the disk surface or edge to cause signal fluctuation in a sensor during read-back mode operation. An initial signal profile is stored as a map indicative of track or disk alignment with respect to the actuator assembly. Selectively, such as after a known shock event, the topographical features are re-profiled. A comparison of the profiles provides a measure of any track distortion which must be compensated for in future read-write operations by adjustments to data track servo follower algorithms.
摘要翻译：一种用于数据盘的方法和装置，适用于补偿赋予磁盘驱动器的冲击载荷的影响，磁盘驱动器具有足够大的幅度以引起磁盘移位。在磁盘表面或边缘上形成一系列地形特征，以在回读模式操作期间引起传感器中的信号波动。初始信号轮廓被存储为指示相对于致动器组件的轨道或盘对准的映射。选择性地，例如在已知的冲击事件之后，地形特征被重新分类。配置文件的比较可以提供任何跟踪失真的量度，通过调整数据轨道伺服跟随器算法，必须在将来的读写操作中对其进行补偿。

5. 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。

6. 发明授权

US07978974B2 Insertable EMI shield clip for use in optical transceiver modules 有权
标题翻译：用于光收发模块的可插入EMI屏蔽夹
公开(公告)号：US07978974B2
公开(公告)日：2011-07-12
申请号：US11860195
申请日：2007-09-24
申请人： Chris K. Togami , Ramesh Sundaram , Hermando Esguerra
发明人： Chris K. Togami , Ramesh Sundaram , Hermando Esguerra
IPC分类号： H04K3/00
CPC分类号： H05K9/0058 , H04B10/40
摘要： The embodiments disclosed herein relate an insertable shield clip for use in controlling electromagnetic interference in an optical transceiver module. The optical transceiver module may include a shell that houses first and second optical subassemblies and an enclosure that cooperates with the shell in defining a covering for the optical transceiver module. The shield clip may comprise a body composed of conductive material. The body may include first and second vertical side members. The body may also include first and second shield members that are each configured to receive a corresponding nosepiece of one of the first and second optical subassemblies. The body may further include a bottom member that interconnects the first and second vertical side members and the first and second shield members.
摘要翻译：本文公开的实施例涉及用于控制光收发器模块中的电磁干扰的可插入屏蔽夹。光收发器模块可以包括容纳第一和第二光学子组件的外壳以及与壳体配合以限定光收发器模块的覆盖物的外壳。屏蔽夹可以包括由导电材料组成的主体。主体可以包括第一和第二垂直侧构件。主体还可以包括第一和第二屏蔽构件，每个屏蔽构件被配置为接收第一和第二光学子组件之一的对应的鼻梁。主体还可以包括使第一和第二垂直侧构件以及第一和第二屏蔽构件相互连接的底部构件。

7. 发明授权

US07050694B2 Continuously variable attenuation of an optical signal using an optical isolator 有权
标题翻译：使用光隔离器对光信号进行连续可变的衰减
公开(公告)号：US07050694B2
公开(公告)日：2006-05-23
申请号：US10426453
申请日：2003-04-29
申请人： Todd L. Gustavson , Konstantinos G. Haritos , Subra Nagarajan , Ramesh Sundaram
发明人： Todd L. Gustavson , Konstantinos G. Haritos , Subra Nagarajan , Ramesh Sundaram
IPC分类号： G02B6/00
CPC分类号： G02B6/2746 , A61K51/1072 , A61K51/1093 , G02B6/266
摘要： Method and apparatus of attenuating an optical signal without adding extra components is presented. The drive current of the optical signal source is set to meet a predetermined bandwidth requirement and exceed a predetermined amplitude requirement. An optical isolator that is used to prevent back-reflections from reaching the optical signal source is used to achieve the desired amount of attenuation. More specifically, the invention includes controlling the attenuation by tuning an angle θ between the transmission axis of a polarizer that is part of the optical isolator and the original polarization state of the optical signal. By increasing the angle θ, the amount of attenuation is increased; by decreasing the angle θ, the amount of attenuation is decreased. The invention allows continuous tuning of the angle θ.
摘要翻译：提出了在不增加额外分量的情况下衰减光信号的方法和装置。光信号源的驱动电流被设定为满足预定的带宽要求并超过预定的幅度要求。用于防止反向反射到达光信号源的光隔离器用于实现所需的衰减量。更具体地，本发明包括通过调谐作为光隔离器的一部分的偏振器的透射轴与光信号的原始极化状态之间的角度θ来控制衰减。通过增加角度θ，增加衰减量; 通过减小角度θ，减少衰减量。本发明允许角度θ的连续调谐。

8. 发明授权

US06369900B1 Glide head with features on its air bearing surface for improved fly height measurement 有权
标题翻译：滑动头，其空气轴承表面具有特征，可改善飞行高度测量
公开(公告)号：US06369900B1
公开(公告)日：2002-04-09
申请号：US09211217
申请日：1998-12-14
申请人： Ramesh Sundaram , Wei H. Yao
发明人： Ramesh Sundaram , Wei H. Yao
IPC分类号： G01B1114
CPC分类号： G01B11/14 , G11B5/6005 , G11B7/122 , G11B11/1058 , G11B33/10
摘要： An improved glide head has optical marks on the air bearing surface. The glide heads can be used for detecting defects on disc surfaces following an evaluation of the fly height as a function of disc rotation. The optical marks provide a position for focusing light used in the optical measurement of fly height. The optical marks have measurably different optical properties from the portions of the air bearing surface not covered by an optical mark. The differences in optical properties of the optical marks can be used to adjust the position of the optical system relative to the glide head to ensure that the light is focused on an optical mark.
摘要翻译：改进的滑行头在空气轴承表面上具有光学标记。在评估飞行高度作为盘旋转的函数之后，滑动头可用于检测盘表面上的缺陷。光学标记提供了用于聚焦在飞行高度的光学测量中使用的光的位置。光学标记与未被光学标记覆盖的空气轴承表面的部分具有可测量的不同的光学特性。可以使用光学标记的光学特性的差异来调整光学系统相对于滑动头的位置，以确保光聚焦在光学标记上。

9. 发明授权

US5751527A Magnetic tape head contour with land widths to optimize flying height and a sufficient number of bleed slots to uniformly maintain the flying height of the tape 失效
标题翻译：具有带宽的磁带头轮廓，以优化飞行高度和足够数量的排放槽，以均匀地保持带的飞行高度
公开(公告)号：US5751527A
公开(公告)日：1998-05-12
申请号：US291052
申请日：1994-08-15
申请人： Ramesh Sundaram , Terry J. Barber
发明人： Ramesh Sundaram , Terry J. Barber
IPC分类号： G11B5/10 , G11B5/187 , G11B5/265 , G11B15/62
CPC分类号： G11B5/102 , G11B5/1871 , G11B5/265 , G11B15/62
摘要： An improved magnetic tape head contour for reading from and writing to magnetic tape moving across the tape head has a unique configuration of bleed slots such that land width is limited to a width that optimizes flying height at increased tape speeds on the order of 4 meters/second. The number of bleed slots is increased to minimize tape undulations thereby minimizing tape head wear profile undulations. A single gutter slot is optionally provided at each end of the tape head to reduce end element wear and increase the useful life of the heads.
摘要翻译：用于从磁带头读取和写入磁带的改进的磁带头轮廓具有排出槽的独特配置，使得焊盘宽度被限制为在增加的磁带速度上优化飞行高度的宽度大约为4米/ 第二。泄放槽的数量增加以最小化磁带起伏，从而最小化带头磨损轮廓起伏。可选地在磁带头的每个端部设置单个沟槽，以减少端部元件磨损并增加磁头的使用寿命。

10. 发明授权

US06473259B1 Disk head height control 有权
标题翻译：磁盘头高度控制
公开(公告)号：US06473259B1
公开(公告)日：2002-10-29
申请号：US09405832
申请日：1999-09-24
申请人： David S. Kuo , Wei H. Yao , Ramesh Sundaram , Huan Tang
发明人： David S. Kuo , Wei H. Yao , Ramesh Sundaram , Huan Tang
IPC分类号： G11B2102
CPC分类号： G11B21/21 , G11B5/60
摘要： A disk head fly height adjustment method includes positioning a disk head over a surface of a rotating data storage disk and dynamically altering a load point of the disk head by changing an electrical force applied to an active element mounted to a head-gimbal assembly. A data storage apparatus includes a head assembly having a data transfer head coupled to a gimbal and an active element coupling the head assembly and a suspension. The active element is configured to exert a force between the head assembly and the suspension in response to an electrical force applied to the active element. The active element can dynamically shift a load point of a disk head. Shifting the load point can alter the pitch of the disk head and, consequently, the fly height of the head.
摘要翻译：盘头飞行高度调节方法包括将盘头定位在旋转数据存储盘的表面上，并且通过改变施加到安装到头部万向节组件上的有源元件的电力来动态地改变盘头的负载点。数据存储装置包括头组件，其具有耦合到万向节的数据传送头和联接头组件和悬架的有源元件。有源元件构造成响应于施加到有源元件的电力而在头部组件和悬架之间施加力。有源元件可以动态地移动磁盘头的负载点。移动负载点可以改变磁头的间距，从而改变磁头的飞行高度。

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