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1. 发明授权

US07006331B1 Head gimbal assembly including a trace suspension assembly backing layer with a conductive layer formed upon a gimbal having a lower oxidation rate 有权
标题翻译：头万向节组件包括具有形成在具有较低氧化速率的万向节上的导电层的痕量悬浮组件背衬层
公开(公告)号：US07006331B1
公开(公告)日：2006-02-28
申请号：US10676538
申请日：2003-09-30
申请人： Jai N. Subrahmanyam , Pierre C. Humbert
发明人： Jai N. Subrahmanyam , Pierre C. Humbert
IPC分类号： G11B5/60
CPC分类号： G11B5/4853 , G11B5/4826 , H05K1/0215 , H05K1/0243 , H05K1/056 , H05K3/305 , H05K3/321 , H05K2201/0347 , H05K2201/10727 , H05K2201/10969
摘要： A head gimbal assembly for a disk drive. The head gimbal assembly includes a trace suspension assembly backing layer including a gimbal. The trace suspension assembly backing layer is formed of a conductive material having a first oxidation rate. The head gimbal assembly further includes a gimbal conductive layer disposed upon the gimbal and formed of a conductive material having a second oxidation rate lower than the first oxidation rate. The head gimbal assembly further includes a slider supported by the gimbal. The head gimbal assembly further includes a conductive compound disposed between the gimbal conductive layer and the slider for electrically grounding the slider to the trace suspension assembly backing layer.
摘要翻译：用于磁盘驱动器的磁头万向架组件。头部万向架组件包括包括万向节的轨迹悬挂组件背衬层。痕量悬浮组件背衬层由具有第一氧化速率的导电材料形成。头万向架组件还包括设置在万向架上的万向导电层，并由具有低于第一氧化速率的第二氧化速率的导电材料形成。头万向架组件还包括由万向节支撑的滑块。头万向架组件还包括设置在万向导电层和滑块之间的导电化合物，用于将滑块电动接地到轨道悬挂组件背衬层。

2. 发明授权

US08543629B2 IFFT processing in wireless communications 有权
标题翻译：无线通信中的IFFT处理
公开(公告)号：US08543629B2
公开(公告)日：2013-09-24
申请号：US11612455
申请日：2006-12-18
申请人： Jai N. Subrahmanyam , Chinnappa K. Ganapathy , Durk L. Van Veen , Jinxia Bai , Kevin S. Cousineau , Seokyong Oh
发明人： Jai N. Subrahmanyam , Chinnappa K. Ganapathy , Durk L. Van Veen , Jinxia Bai , Kevin S. Cousineau , Seokyong Oh
IPC分类号： G06F17/14
CPC分类号： H04L27/2626
摘要： Techniques for perforating IFFT pipelining are described. In some aspects, the pipelining is achieved with a processing system having a memory with a first, second and third sections, an encoder configured to process data in each of the first, second and third memory sections in a round robin fashion, an IFFT configured to process the encoded data in each of the first, second, and third sections in a round robin fashion, and a post-processor configured to process the IFFT processed data in each of the first, second and third memory sections in a round robin fashion.
摘要翻译：描述了用于穿孔IFFT流水线的技术。在一些方面，流水线通过具有具有第一，第二和第三部分的存储器的处理系统来实现，编码器被配置为以循环方式处理第一，第二和第三存储器部分中的每一个中的数据，IFFT被配置以循环方式处理第一，第二和第三部分中的每一个中的编码数据，以及后处理器，其被配置为以循环方式处理第一，第二和第三存储器部分中的每一个中的经IFFT处理的数据。

3. 发明授权

US07613256B2 Forward error correction in a distribution system 失效
标题翻译：配电系统中的前向纠错
公开(公告)号：US07613256B2
公开(公告)日：2009-11-03
申请号：US11398204
申请日：2006-04-04
申请人： Durk L. van Veen , Jai N. Subrahmanyam , Jinxia Bai , Murali Ramaswamy Chari
发明人： Durk L. van Veen , Jai N. Subrahmanyam , Jinxia Bai , Murali Ramaswamy Chari
IPC分类号： H04L27/06
CPC分类号： H04L1/0061 , H04L1/0082 , H04L2001/0097
摘要： A multimedia distribution system is disclosed. The distribution system includes a transmitter unit that distributes content from a content provider to one or more wireless subscriber units. The transmitter unit includes a decoder configured to determine whether a plurality of incoming packets include one or more erasures, a transmitter configured to transmit the packets to a receiving unit, and an error detection code generator configured to generate an error detection code for each of the packets transmitted to the receiver unit, the error detection code being modified for each of the erased packets so that the receiver unit will be able to identify the erased packets.
摘要翻译：公开了一种多媒体分发系统。分配系统包括将内容从内容提供商分发到一个或多个无线用户单元的发射机单元。发射机单元包括解码器，其被配置为确定多个输入分组是否包括一个或多个擦除，被配置为将分组发送到接收单元的发射机，以及错误检测码发生器，被配置为生成每个发送到接收机单元的分组，针对每个被擦除的分组修改错误检测码，使得接收机单元将能够识别被擦除的分组。

4. 发明授权

US07180703B1 Disk drive comprising a spindle motor employing anionic/cationic lubricant to reduce disk surface potential 有权
标题翻译：磁盘驱动器包括使用阴离子/阳离子润滑剂以减小磁盘表面电位的主轴电动机
公开(公告)号：US07180703B1
公开(公告)日：2007-02-20
申请号：US10845863
申请日：2004-05-15
申请人： Jai N. Subrahmanyam , Jack M. Chue
发明人： Jai N. Subrahmanyam , Jack M. Chue
IPC分类号： G11B33/14
CPC分类号： G11B19/022 , G11B25/043
摘要： A disk drive is disclosed comprising a disk, a head actuated over the disk, and a spindle motor for rotating the disk. The spindle motor comprises a rotating component, a stationary component, and a first and second bearing assembly disposed between the rotating component and stationary component for rotating the rotating component about the stationary component, wherein the disk is attached to the rotating component. The bearing assemblies comprise a stationary component surface and a rotating component surface having a lubricant disposed there between. The first bearing assembly employs an anionic lubricant such that a first voltage forms between the stationary component surface and the rotating component surface when the rotating component rotates about the stationary component. The second bearing assembly employs a cationic lubricant such that a second voltage forms between the stationary component surface and the rotating component surface when the rotating component rotates about the stationary component. A polarity of the second voltage being opposite a polarity of the first voltage to thereby reduce the potential at the disk surface.
摘要翻译：公开了一种磁盘驱动器，其包括盘，在盘上致动的头和用于旋转盘的主轴电机。主轴电动机包括旋转部件，静止部件以及设置在旋转部件和固定部件之间的第一和第二轴承组件，用于围绕静止部件旋转旋转部件，其中盘附接到旋转部件。轴承组件包括固定部件表面和具有设置在其间的润滑剂的旋转部件表面。第一轴承组件采用阴离子润滑剂，使得当旋转部件围绕固定部件旋转时，在固定部件表面和旋转部件表面之间形成第一电压。第二轴承组件使用阳离子润滑剂，使得当旋转部件围绕固定部件旋转时，在固定部件表面和旋转部件表面之间形成第二电压。第二电压的极性与第一电压的极性相反，从而减小磁盘表面的电位。

5. 发明授权

US07184230B1 System and method for processing track identifier errors to mitigate head instability in data storage devices 有权
标题翻译：用于处理跟踪标识符错误以缓解数据存储设备中的头部不稳定性的系统和方法
公开(公告)号：US07184230B1
公开(公告)日：2007-02-27
申请号：US10160954
申请日：2002-06-01
申请人： Jack M. Chue , Jai N. Subrahmanyam , Russ A. Quisenberry
发明人： Jack M. Chue , Jai N. Subrahmanyam , Russ A. Quisenberry
IPC分类号： G11B5/02
CPC分类号： G11B5/59605 , G11B5/5547
摘要： A system and method for processing track identifier errors to mitigate head instability in data storage devices is disclosed. The system and method includes computing a track id differential between an expected track id and a received track id, encoding the expected track id and the received track id, initiating a first action if the track id differential exceeds a pre-determined threshold and the encoded expected track id varies from the encoded received track id by a pre-configured number of bits, and initiating a second action if the track id differential does not exceed the pre-determined threshold or the encoded expected track id does not vary from the encoded received track id by a pre-configured number of bits.
摘要翻译：公开了一种用于处理磁道标识符错误以减轻数据存储设备中的磁头不稳定性的系统和方法。该系统和方法包括：计算预期轨迹id和接收轨迹id之间的轨道ID差分，编码预期轨道id和接收轨道id，如果轨道id差异超过预定阈值则启动第一动作，预期轨迹id与编码的接收轨道id相差预先配置的比特数，并且如果轨道id差异不超过预定阈值或编码的预期轨道id不与编码的接收轨道ID由预先配置的位数。

6. 发明授权

US07027256B1 Disk drive having servo sectors that store repeatable runout correction values and related error correction code data 有权
标题翻译：具有伺服扇区的磁盘驱动器，其存储可重复的跳动校正值和相关的纠错码数据
公开(公告)号：US07027256B1
公开(公告)日：2006-04-11
申请号：US10377078
申请日：2003-02-28
申请人： Jai N. Subrahmanyam , Jack M. Chue , Robert J. McNab
发明人： Jai N. Subrahmanyam , Jack M. Chue , Robert J. McNab
IPC分类号： G11B5/596
CPC分类号： G11B5/59627
摘要： A magnetic disk drive having a reduction in repeatable runout (RRO) effects is disclosed. The disk drive has a head disk assembly (HDA) and a sampled servo controller. The HDA includes a rotating magnetic disk, an actuator, and a transducer head. The magnetic disk has a plurality of embedded servo sectors for storing servo information including repeatable runout (RRO) cancellation values and RRO cancellation value error correction code (ECC) data at a servo data rate. The RRO cancellation value ECC data is only for detecting and correcting errors in the RRO cancellation values. In between the embedded servo sectors are data sectors for storing user data at a user data rate that is different from the servo data rate. The actuator positions the transducer head in response to a control effort signal generated by the sampled servo controller based on the servo information.
摘要翻译：公开了具有减少可重复跳动（RRO）效应的磁盘驱动器。磁盘驱动器具有头盘组件（HDA）和采样伺服控制器。 HDA包括旋转磁盘，致动器和换能器头。磁盘具有多个嵌入式伺服扇区，用于以伺服数据速率存储包括可重复跳动（RRO）抵消值和RRO抵消值纠错码（ECC）数据的伺服信息。 RRO抵消值ECC数据仅用于检测和纠正RRO抵消值中的错误。在嵌入式伺服扇区之间是用于以与伺服数据速率不同的用户数据速率存储用户数据的数据扇区。执行器响应于由采样的伺服控制器基于伺服信息产生的控制力信号来定位换能器头。

7. 发明授权

US06972930B1 ESD-protected slider and head gimbal assembly 有权
标题翻译： ESD保护滑块和头万向节组件
公开(公告)号：US06972930B1
公开(公告)日：2005-12-06
申请号：US10377041
申请日：2003-02-28
申请人： Kathy X. Tang , Jai N. Subrahmanyam , Rahmat Karimi
发明人： Kathy X. Tang , Jai N. Subrahmanyam , Rahmat Karimi
IPC分类号： G11B5/127 , G11B5/33 , G11B5/40 , G11B5/48 , G11B21/20
CPC分类号： G11B5/4853 , G11B5/1272 , G11B5/33 , G11B5/40
摘要： A Head Gimbal Assembly (HGA) for use in a disk drive and comprising an ESD-protected slider comprising a head formed on a slider substrate. The slider may comprise an electrical-isolation circuit; an electrically-resistive path between head input connections and the slider; or both isolation circuits and resistive paths for reducing electrostatic charge on the slider while remaining connected during disk drive operations.
摘要翻译：一种用于磁盘驱动器的磁头万向节组件（HGA），包括一个ESD保护的滑块，其包括形成在滑块基板上的磁头。滑动器可以包括电隔离电路; 头部输入连接和滑块之间的电阻路径; 或两个隔离电路和电阻路径，用于在磁盘驱动器操作期间保持连接时减少滑块上的静电电荷。

8. 发明授权

US06801402B1 ESD-protected head gimbal assembly for use in a disk drive 有权
标题翻译：用于磁盘驱动器的ESD保护头万向架组件
公开(公告)号：US06801402B1
公开(公告)日：2004-10-05
申请号：US10286170
申请日：2002-10-31
申请人： Jai N. Subrahmanyam , Darrell D. Palmer , Jack M. Chue
发明人： Jai N. Subrahmanyam , Darrell D. Palmer , Jack M. Chue
IPC分类号： G11B540
CPC分类号： G11B5/4853 , G11B5/40 , G11B5/484 , G11B5/486 , H05K1/0259 , H05K1/056 , H05K1/167
摘要： A Head Gimbal Assembly (HGA) for use in a disk drive and further includes a head having a read element and a write element; and a Trace Gimbal Assembly (TGA) attached to the head. The TGA includes a conductor array having a first end connected to the read element and the write element and a distal end for connecting the read element and the write element to a signal processing circuit, a conductive substrate supporting the head and the conductor array and a dielectric layer disposed between the conductor array and the conductive substrate. The TGA further includes a shunt connected at the distal end for shunting the read element; and an anti-static coating, covering a substantial portion of the conductor array for neutralizing electrostatic charge accumulation on the conductor array.
摘要翻译：一种用于磁盘驱动器的磁头万向节组件（HGA），还包括具有读取元件和写入元件的磁头; 和一个跟踪云台组件（TGA）。 TGA包括具有连接到读取元件和写入元件的第一端的导体阵列和用于将读取元件和写入元件连接到信号处理电路的远端，支撑头部和导体阵列的导电基底和布置在导体阵列和导电基底之间的介电层。 TGA还包括在远端连接用于分流读取元件的分流器; 以及防静电涂层，其覆盖导体阵列的大部分，以中和导体阵列上的静电电荷积聚。

9. 发明申请

US20080159278A1 Multiplexer To Transmitter Interface Protocol 审中-公开
标题翻译：多路复用器到发射机接口协议
公开(公告)号：US20080159278A1
公开(公告)日：2008-07-03
申请号：US11739603
申请日：2007-04-24
申请人： Sajith Balraj , Kenton A. Younkin , Bruce Collins , Robert Riley , Ben A. Saidi , Jai N. Subrahmanyam
发明人： Sajith Balraj , Kenton A. Younkin , Bruce Collins , Robert Riley , Ben A. Saidi , Jai N. Subrahmanyam
IPC分类号： H04Q11/00
CPC分类号： H04L12/189 , H04L29/06027 , H04L65/4076 , H04L65/605 , H04W4/18
摘要： Multiplexer to transmitter interface protocol. A method for a data interface protocol is provided that includes receiving a first packet stream having at least one overhead information symbol (OIS) group and at least one multicast logical channel (MLC) group, and mapping each OIS group to an OIS descriptor packet and at least one OIS payload packet. The method also includes mapping each MLC group to an MLC descriptor packet and at least one MLC payload packet, and outputting the OIS descriptor, OIS payload, MLC descriptor, and MLC payload packets in a second packet stream. An apparatus includes input logic to receive the first packet stream, processing logic to map each OIS group to an OIS descriptor packet an OIS payload packet, and each MLC group to an MLC descriptor packet and an MLC payload packet, and output logic to output the mapped packets in a second packet stream.
摘要翻译：多路复用器到发射机接口协议。提供了一种用于数据接口协议的方法，包括接收具有至少一个开销信息符号（OIS）组和至少一个多播逻辑信道（MLC）组的第一分组流，并将每个OIS组映射到OIS描述符分组，至少一个OIS有效载荷分组。该方法还包括将每个MLC组映射到MLC描述符分组和至少一个MLC有效载荷分组，并且在第二分组流中输出OIS描述符，OIS有效载荷，MLC描述符和MLC有效载荷分组。一种装置包括用于接收第一分组流的输入逻辑，处理逻辑以将每个OIS组映射到OIS描述符分组OIS有效载荷分组，并将每个MLC组映射到MLC描述符分组和MLC有效载荷分组，以及输出逻辑以输出在第二分组流中映射分组。

10. 发明授权

US07330327B1 Servo writing a disk drive by writing discontinuous spiral tracks to prevent overheating 有权
标题翻译：通过写入不连续的螺旋轨道来编写磁盘驱动器，以防止过热
公开(公告)号：US07330327B1
公开(公告)日：2008-02-12
申请号：US10875637
申请日：2004-06-23
申请人： Jack M. Chue , Siri S. Weerasooriya , Jai N. Subrahmanyam
发明人： Jack M. Chue , Siri S. Weerasooriya , Jai N. Subrahmanyam
IPC分类号： G11B21/02 , G11B5/09 , G11B5/596
CPC分类号： G11B5/59633 , G11B5/59638 , G11B5/59661 , G11B5/59688
摘要： A method of servo writing a disk for use in a disk drive is disclosed by writing discontinuous spiral tracks on the disk to protect against overheating the head and/or preamp circuitry. A write clock is synchronized to the rotation of the disk, and a plurality of discontinuous spiral tracks are written on the disk. Each discontinuous spiral track is written at a predetermined circular location determined from the write clock, and each discontinuous spiral track comprises a plurality of segments separated by gaps. Each segment comprises a high frequency signal interrupted at a predetermined interval by a sync mark.
摘要翻译：通过在盘上写入不连续的螺旋轨道来公开用于磁盘驱动器的伺服写入磁盘的方法，以防止头部和/或前置放大器电路过热。写时钟与盘的旋转同步，并且多个不连续的螺旋轨道被写入盘上。每个不连续螺旋轨迹被写入从写入时钟确定的预定的圆形位置，并且每个不连续的螺旋轨迹包括由间隙分开的多个段。每个段包括通过同步标记以预定间隔中断的高频信号。

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