公开(公告)号：EP0034245A3

公开(公告)日：1982-01-27

申请号：EP81100087

申请日：1981-01-08

Applicant: International Business Machines Corporation

Inventor： Wanek, Donald John

IPC: G11B21/20 ,  G11B05/58

CPC classification number: G11B21/20 ,  G11B5/58

Abstract: A carriage assembly for holding a pair of opposite transducers (150Z, 152Z) in contact with the opposite sides of a flexible magnetic disk includes a swing arm (502, 506) for carrying each of the transducers. Respective E-shaped leaf springs (504, 508) support the swing arms with respect to a carriage using the two outer legs of each of the springs which are substantially flat and unstressed when the transducers are in contact with the disk. The central legs of the E-shaped springs are connected together so as to urge the swing arms and transducers together and allow the swing arms and transducers to be parted for the insertion of a disk into operative position. A gimbal spring and a loading spring support each of the transducers with respect to its associated swing arm. The gimbal springs, loading springs and E-shaped springs are balanced with respect to each other so as to hold the transducers in light data transferring contact with the disk. The outer legs of the E-shaped springs flex for low frequency undulations of the disk, and the loading springs and gimbal springs flex for high frequency undulations of the disk.

公开(公告)号：EP0000946A3

公开(公告)日：1979-03-21

申请号：EP78100748

申请日：1978-08-25

Applicant: Hewlett-Packard Company

Inventor： McKnight, Robert N.

IPC: G11B05/58 ,  G11B05/55 ,  G05D03/00

CPC classification number: G11B5/5547 ,  G11B5/59633

Abstract: Two servoing functions, both operating from the data reading and recording transducer, are performed in a high performance movinghead disc drive. One servo rapidly moves the head from its current track to any other track utilizing absolute track identifying addresses recorded in the inter-sector gap between data sectors. Once located on a track, the other servo maintains head location precisely over the center of that track while data is being read or recorded employing track following information also recorded in the inter-sector gap. The resolution of transducer location is enhanced by secondary use of the track following information.

Abstract translation: 在数据读取和记录传感器中操作的两个伺服功能在高性能移动头磁盘驱动器中执行。 一个伺服系统使用绝对轨迹快速地将磁头从当前轨道移动到任何其他轨道，该绝对轨迹识别记录在数据扇区之间扇区间间隙中的地址。 一旦位于轨道上，另一个伺服机构就可以精确地将磁头位置保持在该磁道的中心，同时使用跟踪信息也被记录在扇区间间隙中，同时读取或记录数据。 传感器位置的分辨率通过二次使用轨道跟踪信息来增强。

公开(公告)号：WO1998027547A1

公开(公告)日：1998-06-25

申请号：PCT/US1997007233

申请日：1997-05-05

Applicant: SEAGATE TECHNOLOGY, INC. ,  HAWWA, Muhammad, A. ,  SAMPIETRO, Joseph, M. ,  FARD, Anoush, M. ,  BARINA, Jeffrey, G. ,  MOHAJERANI, Khosrow

Inventor： SEAGATE TECHNOLOGY, INC.

IPC: G11B05/58

CPC classification number: G11B5/6005 ,  G11B5/4813 ,  G11B5/5552 ,  G11B5/596 ,  G11B5/59605

Abstract: A head flexure assembly (40) for positioning a transducing head (25) over a selected track (34) of a rotatable disc (30) in a disc drive system (10) having an actuator arm (16) and head suspension (18) includes a bimorph piezoelectric microactuator (46) having first and second ends. The first end of the microactuator (46) is attached to the actuator arm (16), and a flexure (22) is attached to the second end of the microactuator (46). A slider (24) carrying the transducing head (25) is attached to the flexure (22).

Abstract translation: 一种用于将传感头（25）定位在具有致动器臂（16）和磁头悬架（18）的盘驱动系统（10）中的可旋转盘（30）的选定轨道（34）上的头部挠曲组件（40） 包括具有第一和第二端的双压电晶片压电微致动器（46）。 微致动器（46）的第一端附接到致动器臂（16），并且挠曲件（22）附接到微型致动器（46）的第二端。 承载转换头（25）的滑块（24）附接到挠曲件（22）。

公开(公告)号：WO1994001861A1

公开(公告)日：1994-01-20

申请号：PCT/US1993002177

申请日：1993-03-10

Applicant: WANGTEK, INC.

Inventor： WANGTEK, INC. ,  BAHERI, Hamid ,  CAMPBELL, Peter ,  GRIFFITH, Daniel, L. ,  HARMAN, Jefferson, H.

IPC: G11B05/58

CPC classification number: G11B5/588

Abstract: A magnetic recording head positioning system includes a Terfenol-D magnetostrictive rod (46) prestressed by a lever arm to operate in a linear range to microposition the magnetic recording head (12) in accordance with an electromagnetic field. The mechanical advantage of the lever arm amplifies changes in the magnetostrictive rod (46) to position the head. The varying electromagnetic field is applied to the rod by a coil (42) in response to a position error signal produced from servo data tracks on the magnetic tape. A permanent magnet system (51) biases the magnetostrictive element (46) with a DC field so that varying the field provides bidirectional motion of the magnetic recording head (12). The DC field also reduces coil current and size requirements. The position signal is filtered so that changes in length of the magnetostrictive rod (46) provide fast, fine positioning of the head (12) while a stepper motor and lead screw subassembly system provide slow, coarse positioning of the magnetic recording head (12) by moving the magnetostrictive element (46) assembly in an open loop and/or closed or servo loop mode.

Abstract translation: 磁记录头定位系统包括由杠杆臂预应力的Terfenol-D磁致伸缩杆（46），以在线性范围内操作，以根据电磁场对磁记录头（12）进行微定位。 杠杆臂的机械优点放大了磁致伸缩杆（46）中的变化以定位头部。 响应于由磁带上的伺服数据轨道产生的位置误差信号，通过线圈（42）将变化的电磁场施加到杆上。 永磁体系统（51）用直流磁场对磁致伸缩元件（46）进行偏置，从而改变磁场提供磁记录头（12）的双向运动。 直流电场还可减少线圈电流和尺寸要求。 位置信号被过滤，使得磁致伸缩杆（46）的长度变化提供头部（12）的快速精细定位，同时步进电机和丝杠组件系统提供磁记录头（12）的较慢的粗略定位， 通过以开环和/或闭合或伺服环路模式移动磁致伸缩元件（46）组件。

公开(公告)号：WO1992002929A1

公开(公告)日：1992-02-20

申请号：PCT/US1991005538

申请日：1991-08-01

Applicant: MAXTOR CORPORATION

Inventor： MAXTOR CORPORATION ,  WILSON, Rosser, S.

IPC: G11B05/58

CPC classification number: G11B5/59622

Abstract: A sample data position error signal detection means is described. This invention is suited for use in a digital sector servo (134) in a magnetic media disk drive environment. In particular, the invention relates to the detection and presentation in digital form of position error signals (PES) representative of magnitude and sign of recording head displacement from a track centerline. The invention detects the PES by an integration method and incorporates the innovation of requiring only two integrators (34) to demodulate a PES having an arbitrarily large number of phases. The invention uses a phaselock oscillator (35) having a hybrid digital/analog phase detector to generate the coherent carrier sequence for synchronous detection of PES. A further innovation of the invention is the use of a fully digital automatic gain control (AGC) circuit (13).

Abstract translation: 描述采样数据位置误差信号检测装置。 本发明适用于磁性介质盘驱动环境中的数字扇区伺服（134）。 特别地，本发明涉及数字形式的代表来自轨道中心线的记录头位移的大小和符号的位置误差信号（PES）的检测和呈现。 本发明通过积分方法检测PES，并结合了只需要两个积分器（34）来解调具有任意大相位数的PES的创新。 本发明使用具有混合数字/模拟相位检测器的相位锁相振荡器（35）来产生用于PES的同步检测的相干载波序列。 本发明的进一步创新是使用全数字自动增益控制（AGC）电路（13）。

公开(公告)号：WO1990010289A1

公开(公告)日：1990-09-07

申请号：PCT/FR1990000125

申请日：1990-02-22

Applicant: KODAK-PATHE ,  OVADIA, Aimé ,  ROULLEAU, Guy, Max, Claude

Inventor： KODAK-PATHE

IPC: G11B05/58

CPC classification number: G06K7/015 ,  G06K7/084 ,  G11B5/58

Abstract: The invention concerns a magnetic head suspension system. Said system comprises two sidepieces (1 and 2) surrounding the magnetic head and two spring strips (6 and 7), each of the strips being secured by two studs, whereby one secures the strip to the first sidepiece and the other secures the plate to the second sidepiece. Application: for high-density magnetic supports.

公开(公告)号：WO1989004040A1

公开(公告)日：1989-05-05

申请号：PCT/US1988003837

申请日：1988-10-28

Applicant: BRIER TECHNOLOGY

Inventor： BRIER TECHNOLOGY ,  BIZJAK, John, F. ,  SHENFIELD, Leonard, Roy ,  MILLER, Scott, D. ,  KENNY, Philip, C. ,  BENSON, William ,  BEHR, Michael, I.

IPC: G11B05/58

CPC classification number: G11B5/5965 ,  G11B5/5534 ,  G11B5/59661

Abstract: A track pitch independant time based servo pattern scheme used for providing position and velocity information. A plurality of servo lines (1A-7A, 1B-7B) are formed on a data disk extending from the inner track to the outer track. These servo lines can be buried beneath the data layers to increase the data storage capacity. The servo pattern can also be written on both sides of the disk so that, if the disk was transparent, the servo lines would appear to intersect when viewed from above. Servo heads (16A, 16B) located on each side of disk detect servo line crossings and by comparing the time difference between track crossings of corresponding tracks on either side of the disk the position of the heads can be determined. A concentric calibration track (109) is used to determine the offsets between the desired data heads (20) and servo heads (28) positions.

Abstract translation: 用于提供位置和速度信息的轨道间距独立时基伺服模式方案。 在从内轨到外轨延伸的数据盘上形成有多条伺服线（1A-7A，1B-7B）。 这些伺服线路可以埋在数据层之下，以增加数据存储容量。 伺服模式也可以写在磁盘的两侧，因此如果磁盘是透明的，伺服线将从上方观看时会相交。 位于盘的每一侧的伺服头（16A，16B）检测伺服线路交叉，并且通过比较盘的任一侧的相应轨道的轨道交叉点之间的时间差，可以确定头部的位置。 使用同心校准轨道（109）来确定期望的数据头（20）和伺服头（28）位置之间的偏移。

公开(公告)号：WO1985005720A1

公开(公告)日：1985-12-19

申请号：PCT/US1984001938

申请日：1984-11-26

Applicant: DMA SYSTEMS CORPORATION

Inventor： DMA SYSTEMS CORPORATION ,  PENNIMAN, Steven, K.

IPC: G11B05/58

CPC classification number: G11B21/106 ,  G11B5/59655

Abstract: A servo pattern used to control the fine positioning of a transducer head of a magnetic disk drive unit, comprises an erase gap (36), followed by an automatic gain control (AGC) information burst (37), followed by a first burst of servo control information (38), followed by a second burst of servo control information (39). The servo pattern is written on a disk by the disk drive unit using a mechanical index (35) on an armature associated with the rotation of the disk as a primary time reference, with all other time references based on the transition between the erased gap and the AGC burst. The first and second servo control information bursts are written alternately off track by one half of the track separation between the track of interest and the next adjacent tracks to each side thereof. Decoding the pattern by comparing the servo control information waveform (52) with the output ramp (53) from an integrator, results in digital position control data (54) to adjust the transducer to be centered on the track of interest.

Abstract translation: 用于控制磁盘驱动单元的换能器头的精细定位的伺服模式包括擦除间隙（36），随后是自动增益控制（AGC）信息突发（37），随后是第一次伺服脉冲串 控制信息（38），随后是伺服控制信息的第二脉冲串（39）。 伺服模式由盘驱动单元使用与作为主要时间基准的盘旋转相关联的电枢上的机械指标（35）写入磁盘，所有其它时间参考基于所擦除的间隙和 AGC突发。 第一和第二伺服控制信息脉冲串被交替地写在轨道之间，在感兴趣的轨道和下一个相邻轨道之间的轨道间隔的一半的两边。 通过将伺服控制信息波形（52）与来自积分器的输出斜坡（53）进行比较来对图案进行解码，得到数字位置控制数据（54），以将换能器调整为感兴趣的轨迹为中心。

公开(公告)号：WO1985005484A1

公开(公告)日：1985-12-05

申请号：PCT/US1985000886

申请日：1985-05-10

Applicant: SCHWARTZ, David, Michael

IPC: G11B05/58

CPC classification number: G11B5/012 ,  G11B5/5521

Abstract: The field of data storage magnetic disks desires both a high density recording to increase the total amount of data stored on the disk and accurate tracking of the magnetic head to precisely follow the data track. The solution includes a dual planar magnetic storage disk (10) having magnetic wall regions (16) which are permanently magnetized with either a horizontal or vertical polarity to produce a magnetic wall on each side of the data track (14) and a local tracking device (34) having sensor coils (42, 44) for sensing the location of the magnetic transducer head (46) and reactor coils (36, 38) for producing a reaction coil magnetic field interacts with either the magnetic wall field or the magnetic head assembly (22) to produce the correctional movements for track following.

Abstract translation: 数据存储磁盘领域要求高密度记录，以增加存储在磁盘上的数据总量，并准确跟踪磁头以精确地跟随数据磁道。 解决方案包括具有磁壁区域（16）的双平面磁存储盘（10），其永久地被磁化水平或垂直极性，以在数据轨道（14）的每一侧上产生磁壁，并且本地跟踪装置 （34），其具有用于感测磁换能器头（46）的位置的传感器线圈（42,44）和用于产生反应线圈磁场的电抗器线圈（36,38）与磁壁场或磁头组件 （22）产生跟踪跟踪的惩戒运动。

公开(公告)号：EP0192938A3

公开(公告)日：1988-04-06

申请号：EP86100453

申请日：1986-01-15

Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA

Inventor： Hasegawa, Tadashi c/o Mitsubishi Denki K.K.

IPC: G11B21/16 ,  G11B21/20 ,  G11B05/58

CPC classification number: G11B5/58 ,  G11B5/54 ,  G11B17/32

Abstract: Floppy disk transducer heads (5a,5b) are mounted by gimbal springs (6a,6b) to facing sides of a radially movable carriage (9) and a loading arm (7) pivotally mounted to the carriage and biased theretowards by a flexible spring blade (8). An abutment stop (18) upstanding from the carriage engages a lower surface of the loading arm (7) to prevent any further pivoting thereof towards the carriage beyond a position whereat the heads lightly pinch the opposite disk surfaces with a desired tracking force exclusively determined by the gimbal springs (6a,6b).

Abstract translation: 软盘传感器头5a，5b由万向弹簧6a，6b安装到可径向移动的滑架9的相对侧面上，并且装载臂7以可枢转的方式安装在滑架上并通过柔性弹簧片8向其偏压。 滑架接合装载臂的下表面，以防止任何进一步的朝向滑架的枢转超过一个位置，在该位置，头部用专门由万向弹簧确定的所需的跟踪力轻轻夹住相对的盘表面。