公开(公告)号：EP0159841A3

公开(公告)日：1988-06-22

申请号：EP85302380

申请日：1985-04-04

Applicant: Irwin Magnetic Systems, Inc.

Inventor： Lum, Francis ,  Sokolik, Edmund Louis

IPC: G11B05/55 ,  G11B05/584 ,  G11B27/30

CPC classification number: G11B5/584 ,  G11B5/59688 ,  G11B21/081 ,  G11B27/3027 ,  G11B2220/90 ,  G11B2220/95

Abstract: A method of and apparatus for obtaining digital expression of analog signals, in particular signals produced by «reading» (i.e., transducing) head-positioning information recorded on storage media, for example magnetic recording media. Head-positioning signals (36, 38) constitute signals bursts which are processed to obtain pulses whose width is dictated by the amplitude of the detected bursts, and the pulse width in each instance is expressed digitally by using the magnitude of the pulse to drive a counter-timer (61). The resulting count integrally embodies a digitized representation of the initial analog signal burst, which is directly available for further processing by digital means and for storage in digital memory apparatus.

公开(公告)号：EP0162614A3

公开(公告)日：1988-03-30

申请号：EP85302976

申请日：1985-04-26

Applicant: SEAGATE TECHNOLOGY

Inventor： Kaczeus, Steven L. ,  Hoppe, Robert ,  Gatzen, Hans H.

IPC: G11B21/16 ,  G11B21/08 ,  G11B05/48 ,  G11B05/55

CPC classification number: G11B5/5521 ,  G11B21/08

Abstract: @ The disclosure relates to a disc drive, in which the head/ track included angle is minimised while providing the maximum arm stiffness with minimum inertia by providing a two-arm actuator (20,21; 32) rotating about the common junction point (34) of the two arms. The two arms are mounted at an acute angle. The distal end (38) of the first arm (32) is stepped by a stepper motor (30) connected to the end of the arm. The distal end of the second arm (20, 21) carries the slider (42) and transducer (44). The gap of the transducer and main axis (56) of the slider are directly aligned with the main axis of the arm (21) so that the length of the arm between the pivot point and the point on the track being accessed is minimised.

Abstract translation: 本发明涉及一种盘驱动器，其中通过提供围绕公共连接点（34）旋转的双臂致动器（20,21; 32），使头/轨道夹角最小化，同时以最小惯性提供最大臂刚度， 的两臂。 两个臂以锐角安装。 第一臂（32）的远端（38）由连接到臂的端部的步进马达（30）台阶。 第二臂（20,21）的远端承载滑块（42）和换能器（44）。 传感器和滑块的主轴线（56）的间隙与臂（21）的主轴线直接对准，从而最大程度地减少枢转点与轨道上点之间臂的长度。

公开(公告)号：EP0094495A3

公开(公告)日：1986-02-05

申请号：EP83102954

申请日：1983-03-25

Applicant: International Business Machines Corporation

Inventor： Anderson, Todd Barry ,  Glaser, Thomas William ,  Neesz, John Jacob

IPC: G11B05/58 ,  G11B05/55 ,  G11B21/10

CPC classification number: G11B5/5547

Abstract: A sector servo seek control samples each sector to obtain sector time, the track identification within a sequence of track types and a position error signal (PES) for a track location to track location seek. The device during each sector determines the actual transducer track location and the next sector projected track location with respect to the sequence of track types. The projected track location is corrected using the error signal (PES) to find the actual location, but if a sector signal is missing or erroneous, the projected location is used as the actual location, permitting a composite correction to be made when a correct sector signal is obtained. The seek time is minimized by using maximum acceleration followed by maximum deceleration while not exceeding a velocity value that would cause the device to overshoot the target track using full deceleration.

公开(公告)号：EP0110349A3

公开(公告)日：1985-10-30

申请号：EP83111835

申请日：1983-11-25

Applicant: TANDBERG DATA A/S

Inventor： Rudi, Guttorm

IPC: G11B05/55

CPC classification number: G11B5/5504

公开(公告)号：EP0106661A3

公开(公告)日：1985-08-07

申请号：EP83306177

申请日：1983-10-12

Applicant: DYSAN CORPORATION

Inventor： Baker, Bradley Donald ,  Kelly, Richard Lawrence

IPC: G11B05/016 ,  G11B05/596 ,  G11B05/55 ,  G11B23/36 ,  G11B27/10

CPC classification number: G11B5/016 ,  G11B5/59627 ,  G11B23/36 ,  G11B27/32

Abstract: A method and apparatus for checking performance and alignment of a disk drive designed for use with a floppy disk having a motor (16) driven linear positioning mechanism (14,21) for locating the read/write transducer (22) over the disk circular tracks. A digitally prerecorded diagnostic disk (50) has a series of precisely located special diagnostic tracks providing reference data for various alignment and response characteristics, both mechanical and electronic. A first group of tracks (track 0, 6, 32, 41, 71, 79) have sector ID blocks followed by progressively offset data blocks interspersed therein, with the range of the offset greater than the width of the track for which the disk drive is designed, which guarantees a read failure upon reading any track. These tracks are distributed radially across the surface of the disk at positions corresponding to each rotational phase position of the transducer stepper motor. A pair of indexed timing tracks (track 0, 79) having a fixed number of byte transitions permits testing of both the alignment of the index transducer and skew of the linear positioning device. A pair of special timing tracks affords reference data for head compliance measurement. A plurality of alternate offset tracks (track 44, 47, 50) located centrally of the recording band provides reference data for measuring the eccentricity of the drive spindle.

公开(公告)号：EP0107380A3

公开(公告)日：1985-05-22

申请号：EP83305784

申请日：1983-09-27

Applicant: QUANTUM CORPORATION

Inventor： Moon, William G. ,  Moon, Ronald R. ,  Peterson, Bruce R. ,  Westwood, Donald C.

IPC: G11B21/08 ,  G11B21/10 ,  G11B05/58 ,  G11B05/55

CPC classification number: G11B19/28 ,  G11B5/5521 ,  G11B5/59611 ,  G11B5/59677 ,  G11B21/085

Abstract: A data storage device and method are described. The device includes a base (11), a plurality of rigid magnetic data storage disks (12, 14, 16, 18) commonly journalled to the base, one disk surface being divided into a plurality of radial sectors, each sector being recorded with first bursts offset from track centreline in a first direction for odd numbered tracks and a second direction for even numbered tracks, and with second bursts between the first bursts offset from track centreline in the second direction for odd numbered tracks and centreline in the first direction for even numbered tracks; a plurality of read/write data transducers (42, 44, 46, 48, 50, 52, 54, 56) held in close proximity to the disks; a carriage carrying the transducers; optical encoder means (94, 88, 96) for providing a plurality of phase related signals indicating transducer position relative to the base; peak detection means for detecting and putting out average peak amplitude values for each sector servo burst read by the associated transducer; analogue switch means for switching between the said position signals and peak amplitude values; analogue digital converter means for converting each analogue signal received therefrom into a digital word; user interface circuit means for receiving digital disk surface and track selection control data; tachometer means for generating clock signals representing sector boundaries; programmed digital microprocessor means for receiving digital data from the analogue to digital converter means and the user interface circuit means to calculate control data for commanding the actuator to move from a departure track to a user defined destination track on information from the encoder means during track seeking, and for commanding the actuator to maintain the transducers in track centreline alignment on information from the peak detection means during track following; digital to analogue converter means for receiving and converting the said control data words into analogue signal values; and amplifier means for amplifying the analogue signal values to control the carriage means during track following and during track seeking and settling.

Abstract translation: 描述数据存储装置和方法。 该装置包括基座（11），通常支撑在基座上的多个刚性磁性数据存储盘（12,14,16,18），一个盘表面被分成多个径向扇区，每个扇区首先被记录 突发从奇数编号磁道的第一方向的轨道中心线偏移，偶数轨迹的第二方向偏移，并且在第一脉冲串之间的第二脉冲串在第二方向上从轨道中心线偏移到奇数轨迹，并且在第一方向上的中心线用于偶数 编号轨道 多个读/写数据传感器（42,44,46,48,50,52,54,56）保持在非常靠近磁盘的位置; 承载传感器的托架; 光学编码器装置（94,88,96），用于提供指示相对于基座的换能器位置的多个相位相关信号; 峰值检测装置，用于检测和排除由关联的换能器读取的每个扇区伺服脉冲串的平均峰值振幅值; 用于在所述位置信号和峰值振幅值之间切换的模拟开关装置; 模拟数字转换器装置，用于将从其接收的每个模拟信号转换为数字字; 用于接收数字盘表面和轨道选择控制数据的用户接口电路装置; 用于产生表示扇区边界的时钟信号的转速计装置; 用于从模拟数字转换器装置和用户接口电路装置接收数字数据的编程数字微处理器装置，用于计算控制数据，用于指令致动器在轨迹寻找期间来自编码器装置的信息从出发轨迹移动到用户定义的目标轨迹 并且用于在轨道跟踪期间命令致动器将来自峰值检测装置的信息上的传感器保持在轨道中心线对准中; 数模转换器装置，用于接收和转换所述控制数据字为模拟信号值; 以及放大器装置，用于放大模拟信号值，以在跟踪跟踪期间和跟踪寻找和稳定期间控制滑架装置。

公开(公告)号：EP0082337A3

公开(公告)日：1983-10-26

申请号：EP82110826

申请日：1982-11-23

Applicant: International Business Machines Corporation

Inventor： Keidl, Steven Dennis ,  Shidler, Karl Allen

IPC: G11B17/02 ,  G11B05/55 ,  G11B19/28

CPC classification number: G11B19/12 ,  G11B19/28 ,  G11B21/106 ,  G11B23/36 ,  G11B23/42 ,  G11B27/32 ,  G11B2220/20 ,  G11B2220/2512

Abstract: Control information for a flexible magnetic desk storage assembky (41, 42) is recorded on the periphery of the disk (42) in a region not used for recording data. The control information is read through the protective cover or envelope (41) which encloses the disk by means of a magnetic transducer (25) such as a four track audia cassette head which bears against the envelope. By recording index and sector pulses as part of the control information, hard sectoring can be inexpensively and accurately achieved. A recorded fixed frequency control signal can be read and used as part of the feedback loop in a phase locked oscillator used to control a d.c. motor driving the spindle. The control information can also include servo tracks which assist in registering the data transducer directly over data tracks on media which has changed its dimensions.

公开(公告)号：EP0071381A3

公开(公告)日：1983-03-23

申请号：EP82303777

申请日：1982-07-19

Applicant: Ing. C. Olivetti & C., S.p.a.

Inventor： Bettini, Guiseppe ,  Tronzano, Sergio

IPC: G11B05/55 ,  G11B17/02

CPC classification number: G11B17/0284 ,  G11B5/5521

Abstract: A carriage 19 is moved on guides 21, 22 by a stepping motor 40 to position a head 18 along a line 20 which is radial with respect to the mandrel of the disc drive. The motor is coupled to the carriage by flexible steel tapes 42 and 43 anchored at first ends to a boss 44 on the motor shaft 41 and doubling back through 180° over respective rollers 70, 73 journalled on the carriage. The roller 70 is on a precision bearing and the second end 48 of the corresponding strip 42 is anchored to a fixed point while the second end of the other strip is attached to a tensioning spring 59 so that only the roller 70 determines the carriage movement, this being half the strip movement for finer carriage positioning. There is also described an improved floppy disc centering arrangement wherein a counter-mandrel has a centering boss which is inserted through the hole in the disc into a cavity in the mandrel and slides axially on the counter-mandrel. A resilient ring compressed between the sliding boss and the counter-mandrel spreads fingers of the sliding boss into contact with the edge of the disc hole.

公开(公告)号：EP0012975A3

公开(公告)日：1980-09-17

申请号：EP79105227

申请日：1979-12-17

Applicant: International Business Machines Corporation

Inventor： King, Francis Kong ,  Wanek, Donald John

IPC: G11B05/60 ,  G11B05/55

CPC classification number: G11B5/58

Abstract: A suspension assembly for a magnetic transducer head 150V includes a normally flat gimbal spring 308 in the form of a figure eight, with a pair of tabs or ears 308G at the sides of the eight by means of which the spring is mounted in a support arm 104V. A backup spring, 310 has legs 310D and 310E extending from a mounting side of a hole in the arm 104V towards the other side. Legs 310F and 310G extend back again and connect to a depending leg 310H and flange portion 3101 effective to provide pressure on the middle of the gimbal spring 308. The backup spring 310 provides resilient backup force against translation of the transducer head on its main axis and the gimbal spring 308 provides resilience against transducer pitching and rolling.

Abstract translation: 一种用于磁换能器的悬架，其包括图8形式的通常平的万向节弹簧，在八个侧面具有一对翼片或耳朵，通过该弹簧安装弹簧; 以及折叠的支撑弹簧，其具有从安装侧延伸到另一侧然后再次返回的腿，其具有有效地在万向弹簧和换能器的中心上提供压力的悬垂腿部和凸缘部分，使得支撑弹簧提供弹性支撑力 传感器在其主轴上的平移和万向弹簧提供了抗传感器俯仰和滚动的弹性。

公开(公告)号：EP0192896A3

公开(公告)日：1988-06-29

申请号：EP85309474

申请日：1985-12-24

Applicant: Ing. C. Olivetti & C., S.p.A.

Inventor： Cantello, Giuseppe ,  Concari, Severino

IPC: G11B05/55 ,  G11B21/02 ,  G11B21/08

CPC classification number: G11B5/59633 ,  G11B5/5547 ,  G11B27/10

Abstract: The apparatus is for recording and reading binary information on a magnetic disc (14) of rigid type, with a plurality of concentric recording tracks. Each track comprises a useful zone for storing binary information and a function zone in which information which is used for correct positioning of the head with respect to the central axis of the track is pre-recorded. Moreover, in the function zone of a predetermined track, information identifying this track as a reference track is also pre-recorded. A stepping motor (22) is adapted to position the magnetic recording and reading heads with respect to the tracks of the disc and is driven by a circuit which comprises a voltage source (51) and a voltage boosting circuit (53) which supplies the stepping motor (22) with a voltage (PA) higher than that (PW) supplied by the voltage source (51) during the presence of a command signal (RC) which is emitted by a control unit (15) during the time required to shift the heads from an existing position to a new position.