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11. 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。

12. 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。

13. 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。

14. 发明授权

US07027264B1 Slider with a slider ground pad electrically connected to write head poles and read head shields 有权
标题翻译：带滑块接地垫的滑块电连接到写头磁头和读头屏蔽
公开(公告)号：US07027264B1
公开(公告)日：2006-04-11
申请号：US10698655
申请日：2003-10-31
申请人： Jai N. Subrahmanyam , Gopalakrishna Kote , Kathy X. Tang , Loi D Pham , Jack M. Chue
发明人： Jai N. Subrahmanyam , Gopalakrishna Kote , Kathy X. Tang , Loi D Pham , Jack M. Chue
IPC分类号： G11B5/60
CPC分类号： G11B5/6005 , G11B5/40 , G11B5/4853
摘要： According to an aspect of the present invention, there is provided a slider for a disk drive. The slider includes a slider body including a slider body outer surface. The slider further includes an inductive write head including main and return poles. The slider further includes a slider ground pad disposed at the slider body outer surface. The slider ground pad is disposed in electrical communication with the main and return poles for electrically grounding the main and return poles.
摘要翻译：根据本发明的一个方面，提供了一种用于磁盘驱动器的滑块。滑块包括滑块主体，其包括滑块体外表面。滑块还包括一个包括主极和返回极的感应写头。滑块还包括设置在滑块主体外表面处的滑块接地垫。滑块接地焊盘设置成与主极和返回极电连通，用于使主极和返回极电接地。

15. 发明授权

US06862154B1 Disk drive having a ramp used for the controlled loading of a head of a head stack assembly onto a disk 失效
标题翻译：磁盘驱动器具有用于将磁头堆叠组件的磁头的受控加载到磁盘上的斜坡
公开(公告)号：US06862154B1
公开(公告)日：2005-03-01
申请号：US10329109
申请日：2002-12-24
申请人： Jai N. Subrahmanyam , Serge Hauert
发明人： Jai N. Subrahmanyam , Serge Hauert
IPC分类号： G11B5/48 , G11B5/54 , G11B21/02 , G11B21/22
CPC分类号： G11B21/22 , G11B5/4806 , G11B5/54
摘要： Disclosed is a ramp used for the controlled loading of a head of a head stack assembly (HSA) onto a disk of a disk drive. The HSA includes an actuator arm, a head, and a loading surface. The ramp comprises a base structure and at least one ramp finger projecting approximately perpendicularly from the base structure. In order to load the head in a controlled manner onto the disk, the loading surface of the HSA is rotated along the ramp finger until the head is in a load position. The base structure is then actuated in a vertical direction such that the ramp finger is correspondingly actuated in the vertical direction towards the disk until the head is loaded onto the disk.
摘要翻译：公开了一种用于将磁头堆叠组件（HSA）的磁头控制加载到磁盘驱动器的磁盘上的斜坡。 HSA包括致动器臂，头部和装载表面。斜坡包括基部结构和从基部结构大致垂直地突出的至少一个斜坡指状物。为了以可控的方式将磁头加载到磁盘上，HSA的装载表面沿斜面手指旋转，直到磁头处于装载位置。然后，基础结构在垂直方向上被致动，使得斜面手指在垂直方向上被相应地朝向磁盘驱动，直到磁头被加载到磁盘上。

16. 发明授权

US06826003B1 Disk drive comprising a pattern dependent overshoot circuit for controlling write current overshoot 有权
标题翻译：磁盘驱动器包括用于控制写入电流过冲的与图案相关的过冲电路
公开(公告)号：US06826003B1
公开(公告)日：2004-11-30
申请号：US10062963
申请日：2002-01-31
申请人： Jai N. Subrahmanyam
发明人： Jai N. Subrahmanyam
IPC分类号： G11B502
CPC分类号： G11B5/09
摘要： A disk drive is disclosed comprising a disk and a head actuated radially over the disk. A pattern detector detects a predetermined pattern in write data to be written to the disk, and in response, adjusts a write current overshoot in a write current applied to the head.
摘要翻译：公开了一种磁盘驱动器，包括盘和在盘上径向地致动的磁头。图案检测器检测要写入盘的写入数据中的预定图案，并且作为响应，调整施加到头部的写入电流中的写入电流过冲。

17. 发明授权

US07693124B2 Slot-to-interlace and interlace-to-slot converters for an OFDM system 失效
标题翻译：用于OFDM系统的时隙到交织和交织到时隙转换器
公开(公告)号：US07693124B2
公开(公告)日：2010-04-06
申请号：US11133089
申请日：2005-05-18
申请人： Jai N. Subrahmanyam , Kevin Stuart Cousineau , Michael Mao Wang
发明人： Jai N. Subrahmanyam , Kevin Stuart Cousineau , Michael Mao Wang
IPC分类号： G06F15/16
CPC分类号： H04L5/0048 , H04L5/0007 , H04L25/0226 , H04L27/2602
摘要： In an OFDM system, multiple (M) interlaces are defined for M non-overlapping sets of frequency subbands, and M slots with fixed indices are also defined. Data streams and pilot are mapped to slots, which are in turn mapped to interlaces based on a slot-to-interlace mapping scheme that can achieve frequency diversity and good performance for all slots. At a transmitter, a slot-to-interlace converter maps the slots to the interlaces. The slot-to-interlace converter includes multiple multiplexers and a control unit. The multiplexers map the M slots to the M interlaces based on the slot-to-interlace mapping scheme. The control unit generates at least one control signal for the multiplexers. The multiplexers may be arranged and controlled in various manners depending on the slot-to-interlace mapping scheme. At a receiver, a complementary interlace-to-slot converter maps the interlaces to the slots.
摘要翻译：在OFDM系统中，为M个非重叠的频率子带组定义多个（M）交织，并且还定义具有固定索引的M个时隙。数据流和导频被映射到时隙，这些时隙又被映射到基于可以实现所有时隙的频率分集和良好性能的时隙到交织映射方案的交错。在发射机处，时隙到隔行转换器将时隙映射到交织。时隙到隔行转换器包括多个多路复用器和一个控制单元。多路复用器基于时隙到交错映射方案将M个时隙映射到M个交织。控制单元为多路复用器生成至少一个控制信号。可以根据时隙到交错映射方案以多种方式来布置和控制多路复用器。在接收机处，互补的交错到时隙转换器将交织器映射到时隙。

18. 发明授权

US07099117B1 Head stack assembly including a trace suspension assembly backing layer and a ground trace for grounding a slider 有权
标题翻译：头部堆叠组件包括一个跟踪悬挂组件背衬层和用于接地滑块的接地轨迹
公开(公告)号：US07099117B1
公开(公告)日：2006-08-29
申请号：US10676537
申请日：2003-09-30
申请人： Jai N. Subrahmanyam , Gopalakrishna Kote , Kathy X. Tang , Loi D. Pham , Jack M. Chue
发明人： Jai N. Subrahmanyam , Gopalakrishna Kote , Kathy X. Tang , Loi D. Pham , Jack M. Chue
IPC分类号： G11B5/596 , G11B5/60
CPC分类号： G11B5/486 , G11B5/4806
摘要： A head stack assembly includes a flex cable assembly. The head stack assembly further includes an actuator arm and a load beam coupled to the actuator arm. The head stack assembly further includes a trace suspension assembly backing layer coupled to the load beam and including a gimbal. The head stack assembly further includes a dielectric layer disposed upon the trace suspension assembly backing layer. The head stack assembly further includes a slider supported by the gimbal. The head stack assembly further includes a ground trace disposed upon the dielectric layer with the dielectric layer between the ground trace and the trace suspension assembly backing layer. The ground trace extends along the actuator arm and is electrically connected to the slider and the flex cable assembly for grounding the slider to the flex cable assembly.
摘要翻译：磁头堆叠组件包括柔性电缆组件。头部堆叠组件还包括致动器臂和联接到致动器臂的负载梁。头部堆叠组件还包括耦合到负载梁并包括万向节的轨迹悬挂组件背衬层。顶部堆叠组件还包括设置在微量悬浮组件背衬层上的电介质层。头部堆叠组件还包括由万向节支撑的滑块。磁头堆叠组件还包括设置在电介质层上的接地轨迹，介电层位于接地轨迹和迹线悬挂组件背衬层之间。接地迹线沿着致动器臂延伸并且电连接到滑块和柔性电缆组件，用于将滑块接地到柔性电缆组件。

19. 发明授权

US07099095B1 Track identification codewords having multiple bit error correction capability and generalized gray code property 有权
标题翻译：具有多个位纠错能力和广义灰度码属性的轨道识别码字
公开(公告)号：US07099095B1
公开(公告)日：2006-08-29
申请号：US10769143
申请日：2004-01-30
申请人： Jai N. Subrahmanyam , Jack M. Chue
发明人： Jai N. Subrahmanyam , Jack M. Chue
IPC分类号： G11B5/09
CPC分类号： G11B20/18 , G11B5/59616 , H03M5/00 , H03M7/16
摘要： The present invention may be embodied in a disk drive comprising a rotating magnetic media having tracks identified by binary codewords, and in a related method. Each track codeword for a particular track within a contiguous band of tracks differs from a track codeword for an adjacent track within the contiguous band of tracks by a defined number of bits, and differs from a track codeword for a nonadjacent track within the contiguous band of tracks by at least the defined number of bits. The defined number N of bits is greater than four such that at least two bit errors may be corrected when reading a track codeword.
摘要翻译：本发明可以实现在包括具有由二进制码字标识的轨道的旋转磁性介质的磁盘驱动器中，并且在相关方法中。用于轨道连续带内的特定轨道的每个轨道码字与轨道的连续频带内的相邻轨道的轨道码字不同，该位置在定义的位数之内，并且不同于在相邻频带内的非相邻轨道的轨道码字轨道至少定义的位数。所定义的位数N大于4，使得当读取轨道码字时可以校正至少两个比特错误。

20. 发明授权

US07050249B1 System and method for processing track identification data in a disk drive 有权
标题翻译：用于处理磁盘驱动器中的磁道标识数据的系统和方法
公开(公告)号：US07050249B1
公开(公告)日：2006-05-23
申请号：US10329157
申请日：2002-12-24
申请人： Jack M. Chue , Jai N. Subrahmanyam
发明人： Jack M. Chue , Jai N. Subrahmanyam
IPC分类号： G11B5/09
CPC分类号： G11B5/59683 , G11B5/59688
摘要： A system and method for processing track identification data in a disk drive having concentric tracks each having a track identification field (TIF) stored in embedded servo sectors, the TIF includes a band segment identifying a group of tracks, and an index segment identifying a single track of the group of tracks. The system and method include reading a servo sector to obtain the TIF, parsing the TIF to obtain the band segment, comparing the obtained band segment to an expected band segment to obtain a band segment differential (BSD), initiating an action if the BSD exceeds a pre-determined threshold and varies from the expected band segment by a predetermined number of bits, initiating another action if the BSD exceeds the predetermined threshold and does not vary from the expected band segment by the predetermined number of bits. The process is then applied to the index segments of the band segment.
摘要翻译：一种用于处理磁盘驱动器中的磁道识别数据的系统和方法，所述磁盘驱动器具有各自具有存储在嵌入式伺服扇区中的磁道识别字段（TIF）的同心磁道，所述TIF包括标识一组磁道的带段和标识单个磁道的索引段轨道组的轨道。该系统和方法包括读取伺服扇区以获得TIF，解析TIF以获得带段，将获得的频带段与预期频带段进行比较以获得频带段差分（BSD），如果BSD超过预定的阈值，并且从预期的频带段变化预定的比特数，如果BSD超过预定的阈值，则启动另一个动作，并且不会从预期的频带段改变预定的比特数。然后将该过程应用于带段的索引段。

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